S-8365AAAA-M6T1S2_技术文档

S-8365/8366 Series

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or

PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

www.sii-ic.com

Rev.2.1_01

The S-8365/8366 Series is a CMOS step-up switching regulator controller which mainly consists of a reference voltage

source, an oscillation circuit, an error amplifier, a phase compensation circuit, a timer latch short-circuit protection circuit, a

PWM control circuit (S-8365 Series) and a PWM / PFM switching control circuit (S-8366 Series).

With an external low-ON-resistance Nch Power MOS FET, this product is ideal for applications requiring high efficiency

and a high output current.

The S-8365 Series efficiently works on voltage’s condition of large I/O difference due to the PWM control circuit linearly

varies the duty ratio to 90%.

During light-load, the S-8366 Series switches its operation to the PFM control by the PWM / PFM switching control circuit

in order to prevent efficiency decline due to the IC operating current.

Ceramic capacitors can be used for output capacitor. Small packages SNT-6A, SOT-23-5 and SOT-23-6 enable

high-density mounting.

 Features

• Low operation voltage

• Input voltage range

• Oscillation frequency

• Reference voltage

• Soft start function

• Low current consumption

• Duty ratio

: Start at 1.1 V (1 mA) guaranteed (in the product without UVLO function)

: 1.8 V to 5.5 V

: 1.2 MHz, 600 kHz

: 0.6 V 2.0%

: 7 ms typ.

: 70 μA typ. at switching off

: Built-in PWM / PFM switching control circuit (S-8366 Series)

28% to 85% (1.2 MHz product)

28% to 90% (600 kHz product)

• Shutdown function

• External parts

• Timer latch short-circuit protection circuit

: Current consumption 1.0 μA max. at shutdown

: Inductor, diode, capacitor, transistor

: Selectable with / without short-circuit protection circuit for each product

Settable delay time by external capacitor

(in the product with short-circuit protection)

: Selectable with / without UVLO for each product

• UVLO (under-voltage lockout) function

• Lead-free, Sn 100%, halogen-free^*1

*1. Refer to “ Product Name Structure” for details.

 Applications

• MP3 players, digital audio players

• Digital cameras, GPS, wireless transceiver

• Portable devices

 Packages

• SNT-6A

• SOT-23-5

• SOT-23-6

1

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

S-8365/8366 Series

Rev.2.1_01

 Block Diagram

1. With UVLO function and short-circuit protection

L

SD

V_OUT

Triangular Wave

Oscillation Circuit

UVLO

VDD

PWM Comparator

PWM control, or

C_FB

FB

Error

Amplifier

R_FB1

M1

PWM / PFM

Switching Control

Circuit

+

−

+

−

EXT

R_FB2

Timer Latch

Short-Circuit

Protection

Reference Voltage

with Soft-Start Circuit

ON/OFF

Circuit

V_INC_IN

C_OUT

ON/OFF

CSP

VSS

Figure 1

2. With UVLO function, without short-circuit protection

L

SD

V_OUT

Triangular Wave

Oscillation Circuit

UVLO

VDD

EXT

Error

Amplifier

C_FB

FB

PWM Comparator

R_FB1

M1

PWM control, or

+

−

+

−

PWM / PFM

Switching Control

Circuit

R_FB2

Reference Voltage

with Soft-Start Circuit

ON/OFF

Circuit

V_INC_IN

C_OUT

ON/OFF

VSS

Figure 2

2

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

Rev.2.1_01

S-8365/8366 Series

3. Without UVLO and short-circuit protection

L

SD

V_OUT

IC Internal

Power Supply

VDD

Triangular Wave

Oscillation Circuit

Error

Amplifier

C_FB

PWM Comparator

R_FB1

M1

PWM control, or

+

−

+

−

PWM / PFM

Switching Control

Circuit

FB

EXT

R_FB2

Reference Voltage

with Soft-Start Circuit

ON/OFF

Circuit

V_INC_IN

C_OUT

ON/OFF

VSS

Figure 3

Caution To stabilize the output voltage and oscillation frequency of the S-8365/8366 Series, the input voltage of

1.8 V ≤ V_DD≤ 5.5 V is necessary. When connecting the VOUT output to the VDD pin, set the input voltage

(V_OUT) as to satisfy the above range, including the spike voltage generated in VOUT.

3

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

S-8365/8366 Series

Rev.2.1_01

 Product Name Structure

Users can select the control system, oscillation frequency, short-circuit protection, UVLO function, packages for the

S-8365/8366 Series. Refer to “1. Product name” regarding the contents of product name, “2. Packages” regarding

the package drawings and “3. Product list” regarding the product type.

1. Product name

(1) SNT-6A

S-836

x

A

x

-

I6T1

U

2

Environmental code

U:

Lead-free (Sn 100%), halogen-free

Package name (abbreviation) and IC packing specification^*1

I6T1: SNT-6A, Tape

pin pull-down

Unavailable

Available

ON/OFF

A:

B:

UVLO function

A:

B:

Unavailable

Available

Short-circuit protection

A:

B:

Unavailable

Available

Oscillation frequency

A:

B:

1.2 MHz

600 kHz

Control system

5:

6:

PWM control

PWM / PFM switching control

*1. Refer to the tape drawing.

4

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

Rev.2.1_01

S-8365/8366 Series

(2) SOT-23-5, SOT-23-6

S-836

x

A

x

-

xxxx

x

2

Environmental code

U:

S:

Lead-free (Sn 100%), halogen-free

Lead-free, halogen-free

Package name (abbreviation) and IC packing specification^*1

M5T1: SOT-23-5, Tape

M6T1: SOT-23-6, Tape

pin pull-down

Unavailable

Available

ON/OFF

A:

B:

UVLO function

A:

B:

Unavailable

Available

Short-circuit protection

A:

B:

Unavailable (SOT-23-5)

Available (SOT-23-6)

Oscillation frequency

A:

B:

1.2 MHz

600 kHz

Control system

5:

6:

PWM control

PWM / PFM switching control

*1. Refer to the tape drawing.

2. Packages

Drawing code

Package name

Package

Tape

Reel

Land

SNT-6A

PG006-A-P-SD

MP005-A-P-SD

MP006-A-P-SD

PG006-A-C-SD

MP005-A-C-SD

MP006-A-C-SD

PG006-A-R-SD

MP005-A-R-SD

MP006-A-R-SD

PG006-A-L-SD

SOT-23-5

SOT-23-6

−

5

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

S-8365/8366 Series

Rev.2.1_01

3. Product list

(1) S-8365 Series (PWM control)

Table 1

SNT-6A

ON/ OFF

Oscillation Short-circuit

frequency protection

UVLO

function

SOT-23-5

SOT-23-6

pull-down

−

1.2 MHz Available Available Unavailable

1.2 MHz Unavailable Available Unavailable

1.2 MHz Unavailable Unavailable Unavailable

600 kHz Available Available Unavailable

600 kHz Unavailable Available Unavailable

600 kHz Unavailable Unavailable Unavailable

S-8365AABBA-M6T1y2 S-8365AABBA-I6T1U2

S-8365AAABA-M5T1y2

−

S-8365AAABA-I6T1U2

S-8365AAAAA-I6T1U2

S-8365AAAAA-M5T1y2

−

S-8365ABBBA-M6T1y2 S-8365ABBBA-I6T1U2

S-8365ABABA-M5T1y2

S-8365ABAAA-M5T1y2

−

S-8365ABABA-I6T1U2

S-8365ABAAA-I6T1U2

Remark1. Contact our sales office for S-8365AxBAA (without UVLO function, with short-circuit protection).

2. Contact our sales office for S-8365AxxxB (

pin pull-down).

ON/OFF

3. y: S or U

4. Please select products of environmental code = U for Sn 100%, halogen-free products.

(2) S-8366 Series (PWM / PFM switching control)

Table 2

ON/OFF

pull-down

Oscillation Short-circuit

frequency protection

UVLO

function

SOT-23-5

SOT-23-6

SNT-6A

−

S-8366AABBA-M6T1y2 S-8366AABBA-I6T1U2

1.2 MHz Available Available Unavailable

1.2 MHz Unavailable Available Unavailable

1.2 MHz Unavailable Unavailable Unavailable

600 kHz Available Available Unavailable

600 kHz Unavailable Available Unavailable

600 kHz Unavailable Unavailable Unavailable

−

S-8366AAABA-I6T1U2

S-8366AAAAA-I6T1U2

S-8366AAABA-M5T1y2

S-8366AAAAA-M5T1y2

−

S-8366ABBBA-M6T1y2 S-8366ABBBA-I6T1U2

−

S-8366ABABA-I6T1U2

S-8366ABAAA-I6T1U2

S-8366ABABA-M5T1y2

S-8366ABAAA-M5T1y2

Remark1. Contact our sales office for S-8366AxBAA (without UVLO function, with short-circuit protection).

2. Contact our sales office for S-8366AxxxB (

pin pull-down).

ON/OFF

3. y: S or U

4. Please select products of environmental code = U for Sn 100%, halogen-free products.

6

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

Rev.2.1_01

S-8365/8366 Series

 Pin Configurations

1. SNT-6A

Table 3 With Short-Circuit Protection

Symbol Description

EXT

Top view

Pin No.

1

2

External transistor connection pin

GND pin

1

2

3

6

5

4

VSS

Power-off pin

3

“H” : Power-on (normal operation)

“L” : Power-off (standby)

Output voltage feedback pin

Delay time setting pin for short-circuit

protection

ON/ OFF

Figure 4

4

5

6

FB

CSP

VDD

IC power supply pin

Table 4 Without Short-Circuit Protection

Pin No.

Symbol

EXT

Description

1

2

External transistor connection pin

GND pin

VSS

Power-off pin

3

“H” : Power-on (normal operation)

“L” : Power-off (standby)

Output voltage feedback pin

No connection

ON/ OFF

4

5

6

FB

NC^*1

VDD

IC power supply pin

*1. The NC pin indicates electrically open.

The NC pin can be connected to VDD or VSS.

2. SOT-23-5

Table 5 Without Short-Circuit Protection

Top view

Pin No.

1

Symbol

Description

Power-off pin

5

4

ON/ OFF

“H” : Power-on (normal operation)

“L” : Power-off (standby)

GND pin

External transistor connection pin

IC power supply pin

2

3

4

5

VSS

EXT

VDD

FB

1

2

3

Output voltage feedback pin

Figure 5

7

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

S-8365/8366 Series

Rev.2.1_01

3. SOT-23-6

Table 6 With Short-Circuit Protection

Top view

Pin No.

1

Symbol

VDD

Description

IC power supply pin

6

5

4

Delay time setting pin for

short-circuit protection

Output voltage feedback pin

2

3

CSP

FB

Power-off pin

1

2

3

4

ON/ OFF

“H” : Power-on (normal operation)

“L” : Power-off (standby)

GND pin

Figure 6

5

6

VSS

EXT

External transistor connection pin

8

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

Rev.2.1_01

S-8365/8366 Series

 Absolute Maximum Ratings

Table 7 Absolute Maximum Ratings

(Ta = 25°C, V_SS= 0 V unless otherwise specified)

Item

VDD pin voltage

FB pin voltage

Symbol

Absolute Maximum Ratings

V_SS−0.3 to V_SS+6.0

V_SS−0.3 to V_DD+0.3

400^*1

Unit

V

V_DD

V_FB

V

EXT pin voltage

V_EXT

V

VON / OFF

pin voltage

ON/OFF

V

CSP pin voltage

V_CSP

V

SNT-6A

mW

°C

Power dissipation

SOT-23-5

SOT-23-6

P_D

600^*1

650^*1

Operating ambient temperature

Storage temperature

T_opr

T_stg

−40 to +85

−40 to +125

*1. When mounted on board

[Mounted board]

(1) Board size :

(2) Name :

114.3 mm × 76.2 mm × t1.6 mm

JEDEC STANDARD51-7

Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical

damage. These values must therefore not be exceeded under any conditions.

700

SOT-23-5

600

SOT-23-6

500

400

300

200

SNT-6A

100

0

50

100

150

Ambient Temperature (Ta) [°C]

Figure 7 Package Power Dissipation (When Mounted on Board)

9

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

S-8365/8366 Series

Rev.2.1_01

 Electrical Characteristics

1. 1.2 MHz product

Table 8 Electrical Characteristics

(V_DD= 3.3 V, Ta = 25°C unless otherwise specified)

Test

Circuit

2

Item

Symbol

V_DD

Conditions

Min.

1.8

−

Typ.

Max.

5.5

Unit

V

Input voltage^*1

Operating start

voltage^*2

−

Product without UVLO function,

V_ST1

1.1

V

3

1

I

_OUT= 1 mA

Oscillation start

voltage

No external parts

for product without UVLO function,

Product without UVLO function,

I_OUT= 1 mA, Determined by decreasing 0.8

_DDgradually

V_ST2

−

1.0

V

Operation holding

voltage

V_HLD

−

3

V

FB voltage

V_FB

ΔV_FB

ΔTa

I_FB

−

0.588

0.6

100

⎯

0.612

−

V

ppm/°C

μA

1

FB voltage temperature

coefficient

Ta = −40°C to +85°C

−

－0.1

−

FB pin input current

Current consumption

at operation^*3

V_DD= 1.8 V to 5.5 V, FB pin

0.1

−

At switching operation, no load

I_SS1

I_SS2

I_SSS

500

μA

V

_FB= V_FB(S)× 0.95

Current consumption

at switching off

At switching stop, V_FB= V_FB(S)× 1.5

−

70

120

1.0

μA

1

Current consumption

at shutdown

V^{ON / OFF}= 0 V

−

I_EXTH

I_EXTL

f_osc

V_EXT= V_DD− 0.4 V

V_EXT= 0.4 V

−

100

−130

200

1.2

−60

−

1.4

mA

1

EXT pin output current

Oscillation frequency

Maximum duty ratio

−

1.0

MHz

Max

Duty

V

_FB= V_FB(S)× 0.95

80

20

85

28

50

90

36

75

%

1

2

1

PWM / PFM switching PFM

_DD= V_OUT(S)− 0.1 V, no load

Duty ratio^*4

Duty

Short-circuit protection

delay time^*5

Product with short-circuit protection,

At CSP = 0.1 μF

t_PRO

37.5

ms

UVLO release voltage V_UVLO+

Product with UVLO function

1.60

0.05

0.75

−

1.70

0.10

−

1.78

0.15

−

V

1

UVLO hysteresis width V_UVLOHYSProduct with UVLO function

V

_DD= 1.8 V to 5.5 V,

ON/OFF

High level input voltage V_SH

Low level input voltage V_SL

−

0.3

Product without

V_DD= 1.8 V to 5.5 V,

pin pull-down,

ON/OFF

−0.1

−

0.1

2.5

μA

1

ON/OFF

pin pull-down,

High level input current I_SH

Product with

ON/OFF

0.2

1.0

V_DD= 1.8 V to 5.5 V,

ON/OFF

Low level input current I_SL

−0.1

5

−

7

0.1

10

μA

ms

1

2

Soft-start time

t_SS

−

*1. The S-8365/8366 Series steps up from V_DD= 1.1 V, but set the input voltage as to 1.8 V ≤ V_DD≤ 5.5 V for stabilizing

the output voltage and oscillation frequency.

*2. This is the guaranteed value measured with external parts shown in “Table 10 External Parts List” and with test

circuits shown in Figure 10. The operating start voltage varies largely depending on diode’s forward voltage.

Evaluate sufficiently with actual device.

*3. V_FB(S)is a setting value for FB voltage.

*4.

V_OUT(S)is a setting value for output voltage. V_OUTis the typical value of actual output voltage.

V_OUT(S)can be set by using the rate of V_FBand the output voltage setting resistors (R_FB1, R_FB2).

For details, refer to “ External Parts Selection”.

*5. The short-circuit protection time can be set by the external capacitor, and the maximum set value by the external

capacitor is unlimited when an ideal case is assumed. But use CSP = approximately 0.47 μF as a target maximum

value due to the need to consider the discharge time of the capacitor.

For details, refer to “ External Parts Selection”.

10

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

Rev.2.1_01

S-8365/8366 Series

2. 600 kHz product

Table 9 Electrical Characteristics

(V_DD= 3.3 V, Ta = 25°C unless otherwise specified)

Test

Circuit

2

Item

Symbol

Conditions

Min.

1.8

−

Typ.

Max.

5.5

Unit

V

Input voltage^*1

Operating start

voltage^*2

V_DD

−

Product without UVLO function,

V_ST1

1.0

V

3

1

I

_OUT= 1 mA

Oscillation start

voltage

No external parts

for product without UVLO function,

Product without UVLO function,

I_OUT= 1 mA, Determined by decreasing 0.8

_DDgradually

V_ST2

−

0.9

V

Operation holding

voltage

V_HLD

−

3

V

FB voltage

V_FB

ΔV_FB

ΔTa

I_FB

⎯

0.588

0.6

100

−

0.612

−

V

ppm/°C

μA

1

FB voltage temperature

coefficient

Ta = −40°C to +85°C

−

FB pin input current

Current consumption

at operation^*3

V_DD= 1.8 V to 5.5 V, FB pin

−0.1

−

0.1

−

At switching operation, no load

I_SS1

I_SS2

I_SSS

300

μA

V

_FB= V_FB(S)× 0.95

Current consumption

at switching off

At switching stop, V_FB= V_FB(S)× 1.5

−

70

120

1.0

μA

1

Current consumption

at shutdown

V^{ON / OFF}= 0 V

−

I_EXTH

I_EXTL

f_osc

V_EXT= V_DD− 0.4 V

V_EXT= 0.4 V

−

100

−130

200

−60

−

690

mA

kHz

1

EXT pin output current

Oscillation frequency

Maximum duty ratio

−

510

600

Max

Duty

V

_FB= V_FB(S)× 0.95

85

20

90

28

50

95

36

75

%

1

2

1

PWM / PFM switching PFM

_DD= V_OUT(S)− 0.1 V, no load

Duty ratio^*4

Duty

Short-circuit protection

delay time^*5

Product with short-circuit protection,

At CSP = 0.1 μF

t_PRO

37.5

ms

UVLO release voltage V_UVLO+

Product with UVLO function

1.60

0.05

0.75

−

1.70

0.10

−

1.78

0.15

−

V

1

UVLO hysteresis width V_UVLOHYSProduct with UVLO function

V_DD= 1.8 V to 5.5 V,

ON/OFF

High level input voltage V_SH

Low level input voltage V_SL

−

0.3

Product without

pin pull-down,

ON/OFF

−0.1

−

0.1

2.5

μA

1

V

_DD= 1.8 V to 5.5 V,

ON/OFF

High level input current I_SH

Low level input current I_SL

Product with

pin pull-down,

ON/OFF

0.2

1.0

V

_DD= 1.8 V to 5.5 V,

ON/OFF

V_DD= 1.8 V to 5.5 V,

−0.1

5

−

7

0.1

10

μA

ms

1

2

Soft-start time

t_SS

−

*1. The S-8365/8366 Series steps up from V_DD= 1.0 V, but set the input voltage as to 1.8 V ≤ V_DD≤ 5.5 V for stabilizing

the output voltage and oscillation frequency.

*2. This is the guaranteed value measured with external parts shown in “Table 10 External Parts List” and with test

circuits shown in Figure 10. The operating start voltage varies largely depending on diode’s forward voltage.

Evaluate sufficiently with actual device.

*3. V_FB(S)is a setting value for FB voltage.

*4.

V_OUT(S)is a setting value for output voltage. V_OUTis the typical value of actual output voltage.

V_OUT(S)can be set by using the rate of V_FBand the output voltage setting resistors (R_FB1, R_FB2).

For details, refer to “ External Parts Selection”.

*5. The short-circuit protection time can be set by the external capacitor, and the maximum set value by the external

capacitor is unlimited when an ideal case is assumed. But use CSP = approximately 0.47 μF as a target maximum

value due to the need to consider the discharge time of the capacitor.

For details, refer to “ External Parts Selection”.

11

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

S-8365/8366 Series

Rev.2.1_01

 External Parts List When Measuring Electrical Characteristics

Table 10 External Parts List

Element Name

Inductor

Symbol

Consonants

Manufacturer

Part Number

2.2 μH (1.2 MHz product)

3.3 μH (600 kHz product)

TAIYO YUDEN Co., Ltd.

TDK Corporation

NR6028T

LTF5022

L

M1

Q1

−

Vishay Intertechnology, Inc.

TOSHIBA CORPORATION

SHINDENGEN ELECTRIC

MANUFACTURING CO.,LTD

TDK Corporation

Si3460BDV

2SD2652

Transistor

Diode

SD

−

D1FH3

Input capacitor

C_IN

10 μF

22 μF

C3225X7R1E106MB

C4532X7R1E226MB

GRM1882C1H

Output capacitor

C_OUT

TDK Corporation

FB pin capacitor

C_FB

47 pF

Murata Manufacturing Co., Ltd.

series

CSP pin capacitor

Speed-up capacitor

Base resistor

CSP

C_b

0.1 μF

2200 pF

1 kΩ

TDK Corporation

ROHM Co., Ltd.

C1220X7R1E104MB

C1005X7R1H222K

MCR03 series

R_b

Output voltage setting

resistor 1

R_FB1

R_FB2

220 kΩ

30 kΩ

ROHM Co., Ltd.

MCR03 series

Output voltage setting

resistor 2

12

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

Rev.2.1_01

S-8365/8366 Series

 Test Circuits

1.

A

VDD

EXT

FB

C_IN

S-8365/8366

Series

ON/OFF

CSP

A

↓

A

V

VSS

CSP

Figure 8

2.

L

SD

V_OUT

M1

VDD

C_FB

R_FB1

EXT

C_IN

↓

V

S-8365/8366

Series

C_OUT

I_OUT

ON/OFF

FB

A

CSP

R_FB2

VSS

CSP

Figure 9

3.

L

SD

V_OUT

C_b

Q1

VDD

C_FB

R_FB1

EXT

FB

C_IN

R_b

↓

V

S-8365/8366

Series

C_OUT

I_OUT

ON/OFF

A

R_FB2

VSS

Figure 10

13

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

S-8365/8366 Series

Rev.2.1_01

 Operation

1. Switching control method

1.1 PWM control (S-8365 Series)

The S-8365 Series is a switching regulator controller that uses a pulse width modulation method (PWM).

In conventional PFM control switching regulators, pulses are skipped when the output load current is small,

causing a fluctuation in the ripple frequency of the output voltage, resulting in increased ripple voltage.

For the S-8365 Series, although the pulse width changes from 0% to 90% in accordance with each load current

(or 0% to 85% for 1.2 MHz products), since the switching frequency does not change, the ripple voltage

generated due to switching can be eliminated by filtering. The ripple voltage can thus be lowered in the wide

input voltage and load current ranges.

1.2 PWM / PFM switching control (S-8366 Series)

The S-8366 Series switching regulator controller automatically switches between the pulse width modulation

method (PWM) and pulse frequency modulation method (PFM) according to the load current.

A low ripple power can be supplied by operating on PWM control for which the pulse width changes from 28% to

90% (or 28% to 85% for 1.2 MHz products) in the range where the output load current is large.

The S-8366 Series operates on PFM control when the output load current is small and the fixed pulses which

have the width of 28% are skipped according to the load current amount. Therefore, the oscillation circuit

intermittently oscillates, reducing the self-current consumption. This avoids decreased efficiency when the

output load current is small. The point at which PWM control switches to PFM control varies depending on the

external element (inductor, diode, etc.), input voltage value, and output voltage value, and this method achieves

high efficiency in the output load current of about 100 μA.

2. Soft-start function

The S-8365/8366 Series has a soft-start circuit. The output voltage (V_OUT) gradually rises after power-on or startup

when the ON/OFF pin is set to high, suppressing rush current and overshooting the output voltage. The soft-start

time (t_SS) for the S-8365/8366 Series is defined as the time from startup until V_OUTreaches 90% of the output set

voltage value (V_OUT(S)). A reference voltage adjustment method is used as the soft-start method and the reference

voltage gradually rises from 0 V after soft-start.

A soft-start performs by controlling the FB pin voltage so that it follows the rise of the reference voltage. After the

reference voltage rises once, it is reset to 0 if the ON/OFF pin voltage drops to low, the power supply voltage drops

to the UVLO detection voltage, or the S-8365/8366 Series enters the short-circuit protection latch status. A

soft-start is performed regardless of conditions when resuming step-up operation.

14

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3. Shutdown pin

This pin stops or starts step-up operations.

3.1 Without ON/OFF pin pull-down

When this pin is set to the low level, the voltage of the EXT pin is fixed to 0 V, and the external transistor and all

internal circuits stop, substantially reducing the current consumption.

Do not use the ON/OFF pin in a floating state because it is set up as shown in Figure 11 and is not internally

pulled up or down. Do not apply a voltage of between 0.3 V and 0.75 V to the ON/OFF pin because applying

such a voltage increases the current consumption. If the ON/OFF pin is not used, connect it to the VDD pin.

Table 11

CR Oscillation

ON/OFF

Output Voltage

Set value

Circuit

Operates

Stops

“H”

“L”

*1

≅V_IN

*1. Voltage obtained by subtracting the voltage drop due to the DC resistance of the inductor and the diode

forward voltage from V_IN.

VDD

ON/OFF

VSS

Figure 11

3.2 With ON/OFF pin pull-down

When the ON/OFF pin is set to the low level, the voltage of the EXT pin is fixed to 0 V, and the external

transistor and all internal circuits stop substantially reducing the current consumption.

The ON/OFF pin is set up as shown in Figure 12 and is internally pulled down by using the depression

transistor, so all circuits stop even if this pin is floating. Do not apply a voltage of between 0.3 V and 0.75 V to

the ON/OFF pin because applying such a voltage increases the current consumption. If the ON/OFF pin is not

used, connect it to the VDD pin.

Table 12

CR Oscillation

ON/OFF

Output Voltage

Set value

Circuit

Operates

Stops

“H”

“L”

*1

≅V_IN

*1

High-Z

Stops

≅V_IN

*1. Voltage obtained by subtracting the voltage drop due to the DC resistance of the inductor and the diode

forward voltage from V_IN.

VDD

ON/OFF

VSS

Figure 12

15

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

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4. Timer latch type short-circuit protection (products with short-circuit protection function)

The S-8365/8366 Series incorporates a timer latch type short-circuit protection circuit that stops switching operation

if the output short circuits for a certain time or more. Connect a capacitor (CSP) to the CSP pin to set the delay time

of this circuit.

The S-8365/8366 Series operates on the maximum duty if the output voltage drops due to output short-circuiting or

other factors. When it enters the maximum duty status, charging the constant current to CSP is started. If this

status is held for the short-circuit protection delay time or more, the voltage of the CSP pin exceeds the reference

voltage and the IC enters the latch mode.

Note that switching operation stops in latch mode but the internal circuits normally operate, which differs from the

power-off status. The constant current is continuously charged to CSP even in latch mode, so the voltage of the

CSP pin rises to the V_DDlevel.

To reset the latch mode of short-circuit protection, lower V_DDto the UVLO detection voltage or lower or set the ON/

OFF pin to the low level.

UVLO release

UVLO detection

Input voltage

(V_DD

)

Output load

Short-circuit state

Reference

voltage

CSP pin

voltage

(V_CSP

)

50 ms (CSP = 0.1 μF)

Latch mode

Short-circuit protection

delay time

Short-circuit protection

delay time

Normal

state

Short circuit protection

delay time

Latch

period

Reset period

Figure 13

5. UVLO function (products with UVLO function)

The S-8365/8366 Series has a UVLO (undervoltage lockout) circuit for avoiding IC malfunctions due to power

supply voltage drops. The S-8365/8366 Series stops switching operation upon UVLO detection and retains the

external transistor in the off state. After entering the UVLO detection status once, the soft-start function is reset.

Note, however, that the other internal circuits operate normally and that the status differs from the power-off status.

16

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

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 Operation Principles

The S-8365/8366 Series is a step-up switching regulator controller. Figure 14 shows the basic circuit diagram.

Step-up switching regulators start current supply by the input voltage (V_IN) when the Nch power MOS FET is turned

on and holds energy in the inductor at the same time. When the Nch power MOS FET is turned off, the CONT pin

voltage is stepped up to discharge the energy held in the inductor and the current is discharged to V_OUTthrough the

diode. When the discharged current is stored in C_L, a voltage is generated, and the potential of V_OUTincreases until

the voltage of the FB pin reaches the same potential as the internal reference voltage.

For the PWM control method, the switching frequency (f_OSC) is fixed and the V_OUTvoltage is held constant

according to the ratio of the ON time and OFF time (ON duty) of the Nch power MOS FET in each period.

For the PWM control method, the V_OUTvoltage is held constant by controlling the ON time.

In the S-8366 Series, the Nch power MOS FET is turned on when the fixed duty cycle is 28% for the PFM control

method. When energy is discharged to V_OUTonce and the V_OUTpotential exceeds the set value, the Nch power

MOS FET stays in the off status until V_OUTdecreases to the set value or less due to the load discharge. Time V_OUT

decreases to the set value or less depends on the amount of load current, so, the switching frequency varies

depending on this current.

I_OUT

I₂

SD

L

CONT

V_OUT

V_IN

I₁

Nch power

MOS FET

EXT

FB

C_OUT

VSS

R_L

Figure 14 Basic Circuit of Step-up Switching Regulator

The ON duty in the current continuous mode can be calculated by using the equation below. Use the S-8365/8366

Series in the range where the ON duty is less than the maximum duty. Note that the products with short-circuit

protection is set in the timer-latch status if the maximum duty lasts the short-circuit protection delay time (t_PRO) or

more.

The maximum duty is 85% typ. for 1.2 MHz products and 90% for 600 kHz products.

V_IN

V_{OUT +}V_D

ON duty = 1 −

× 100 [%]

*1

(

)

The ON time (t_ON) can be calculated by using the following equation :

1

t_ON

=

× ON duty

f_OSC

1

V_IN

=

×

1 −

········ (1)

*1

(

)

V_OUT+ V_D

f_OSC

*1. V_D: Forward voltage of diode

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STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

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1. Continuous current mode

The following explains the current that flows into the inductor when the step-up operation stabilizes in a certain

status and I_OUTis sufficiently large.

When the Nch power MOS FET is turned on, current (I₁) flows in the direction shown in Figure 14. The inductor

current (I_L) at this time gradually increases in proportion with the ON time (t_ON) of the Nch power MOS FET.

Current change of inductor within t_ON

:

ΔI_L(ON)= I_Lmax. − I_Lmin.

V_IN

L

=

× t_ON

When the Nch power MOS FET is turned off, the voltage of the CONT pin is stepped up to V_OUT+ V_Dand the

voltage on both ends of the inductor becomes V_OUT+ V_D− V_IN. However, it is assumed here that V_OUT>> V_Dand V_D

is ignored.

Current change of inductor within t_OFF

:

V_OUT− V_IN

ΔI_L(OFF)

=

× t_OFF

L

The input power equals the output power in an ideal situation where there is no loss by components.

I_IN(AV)

:

P

_IN= P_OUT

I_IN(AV)× V_IN= I_OUT× V_OUT

V_OUT

V_IN

∴I_IN(AV)

=

× I_OUT.................... (2)

The current that flows in the inductor consists of a ripple current that changes due to variation over time and a

direct current.

From Figure 15 :

I_IN(AV)

:

ΔI_L

I_IN(AV)= I_IN(DC)

+

2

V_OUT− V_IN

2 × L

V_IN

= I_IN(DC)

× t_OFF

× t_ON........... (3)

2 × L

Above, the continuous mode is the operation mode when I_IN(DC)> 0 as shown in Figure 15 and the inductor current

continuously flows.

While the output current (I_OUT) continues to decrease, I_IN(DC)reaches 0 as shown in Figure 16. This point is the

critical point of the continuous mode.

As shown in equations (2) and (3), the direct current component (I_IN(DC)) depends on I_OUT

.

I

_OUT(0)when I_IN(DC)reaches 0 (critical point) :

2

t_ON× V_IN

I_OUT(0)

=

2 × L × V_OUT

t_ONcan be calculated using equation (1).

When the output current decreases below I_OUT(0), the current flowing in the inductor stops flowing in the t_OFFperiod

as shown in Figure 17. This is the discontinuous mode.

18

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I_L

I_Lmax.

I_IN(AV)

I_Lmin.

I_IN(DC)

t

t_ON

t = 1 / f_OSC

t_OFF

Figure 15 Continuous Mode (Current Cycle of Inductor Current I_L)

I_L

I_Lmax.

I_Lmin.

t

t_ON

t = 1 / f_OSC

t_OFF

Figure 16 Critical Point (Current Cycle of Inductor Current I_L)

I_L

I_Lmax.

I_Lmin.

t

t_ON

t_OFF

t = 1 / f_OSC

Figure 17 Discontinuous Mode (Current Cycle of Inductor Current I_L)

19

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

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 External Parts Selection

1. Inductor

The recommended L value of the S-8365/8366 Series is 2.2 μH for 1.2 MHz products and 3.3 μH for 600 kHz

products.

Note the following when changing the inductance.

The inductance (L) has a strong influence on the maximum output current (I_OUT) and efficiency (η).

The inductor peak current (I_PK) increases when L is decreased, which improves the circuit stability and increases

the I_OUTusers can obtain. If L is decreased further, the ability of the external transistor to drive the current becomes

insufficient, reducing the efficiency and decreasing I_OUT

.

The loss due to the I_PKof the switching transistor is decreased by increasing L and the efficiency maximizes at a

certain L value. If L is increased further, the loss due to the serial resistance of the inductor increases, lowering the

efficiency.

Caution When selecting an inductor, be careful about its allowable current. If a current exceeding the

allowable current flows through the inductor, magnetic saturation occurs, substantially lowering

the efficiency and destroying ICs due to large current. Therefore, select an inductor such that I_PK

does not exceed the allowable current. The following equations express I_PKin the ideal statuses

in the discontinuous and continuous modes :

2 × I_OUT× (V_OUT+ V_D^*2− V_IN)

I_PK

=

(Discontinuous mode)

(Continuous mode)

f_OSC^*1× L

*2

V_OUT+ V_D

V_IN

(V_OUT+ V_D^*2− V_IN) × V_IN

× I_OUT

+

2 × (V_OUT+ V_D^*2) × f_OSC^*1× L

*1. f_OSC: oscillation frequency

*2. V_Dis the forward voltage of a diode. The reference value is 0.4 V.

However, current exceeding the above equation flows because conditions are practically not ideal.

Perform sufficient evaluation with actual application.

Table 13 Typical Inductors (for Small Low-Profile Devices)

Rated

Current

Dimensions (L × W × H)

Manufacture

Product Name

L Value DC Resistance

[mm]

VLF3010ST-2R2M

VLF3010ST-3R3M

VLS252010-2R2M

VLS252010-3R3M

LPS3008-222ML

LPS3008-332ML

NR3010T2R2M

2.2 μH

3.3 μH

2.2 μH

3.3 μH

2.2 μH

3.3 μH

2.2 μH

3.3 μH

0.092 Ω max.

0.130 Ω max. 0.88 A max.

1.1 A max.

2.8 × 3.0 × 1.0

2.5 × 2.0 × 1.0

3.0 × 3.0 × 0.8

3.0 × 3.0 × 1.0

3.0 × 3.0 × 1.2

TDK Corporation

0.190 Ω max.

0.304 Ω max.

0.175 Ω max.

0.285 Ω max. 0.88 A max.

0.114 Ω max. 1.1 A max.

0.168 Ω max. 0.87 A max.

1.2 A max.

1.0 A max.

1.1 A max.

Coilcraft, Inc.

Taiyo Yuden Co., Ltd.

Sumida Corporation

NR3010T3R3M

CDRH2D11BNP-2R2N 2.2 μH 0.0955 Ω max. 1.4 A max.

CDRH2D11BNP-3R3N 3.3 μH 0.154 Ω max. 1.0 A max.

Table 14 Typical Inductors (for Large Current, High Step-up Rate)

Rated

Current

Dimensions (L × W × H)

Manufacture

Product Name

L Value DC Resistance

[mm]

LTF5022T-2R2M

LTF5022T-3R3M

LPS6225-222ML

LPS6225-332ML

NR6028T2R2M

2.2 μH

3.3 μH

2.2 μH

3.3 μH

2.2 μH

0.040 Ω max.

0.060 Ω max.

0.045 Ω max.

0.055 Ω max.

0.020 Ω max.

3.4 A max.

2.7 A max.

4.1 A max.

3.6 A max.

4.2 A max.

5.0 × 5.2 × 2.2

6.0 × 6.0 × 2.4

6.0 × 6.0 × 2.8

TDK Corporation

Coilcraft, Inc.

Taiyo Yuden Co., Ltd.

20

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

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2. Diode

Use an externally mounted that meets the following conditions.

• Low forward voltage (Schottky barrier diode or similar type)

• High switching speed

• Reverse withstand voltage of V_OUT+ spike voltage or more

• Rated current of I_PKor more

3. Input capacitor (C_IN) and output capacitor (C_OUT

)

To improve efficiency, an input capacitor (C_IN) lowers the power supply impedance and averages the input current.

Select C_INaccording to the impedance of the power supply used. The recommended capacitance is 10 μF for the

S-8365/8366 Series.

An output capacitor (C_OUT), which is used to smooth the output voltage, requires a capacitance larger than that of

the step-down type because the current is intermittently supplied from the input to the output side in the step-up

type. A 22 μF ceramic capacitor is recommended for the S-8365/8366 Series. However, a higher capacitance is

recommended if the output voltage is high or the load current is large. If the output voltage or load current is low,

about 10 μF can be used without problems.

Select C_OUTafter sufficient evaluation with actual application.

A ceramic capacitor can be used for both the input and output.

4. Capacitor for setting short-circuit protection delay time (CSP) (products with short-circuit

protection)

For the S-8365/8366 Series, the short-circuit protection delay time can be set to any value by using an external

capacitor. Connect the capacitor between the CSP and VSS pins. Select the capacitor value according to the

equation below and Figure 18.

Note, however, that the equation and figure show a theoretical value assuming an ideal capacitor value and typ. IC

conditions. Variations of the capacitor and IC are not considered.

For the IC variations, see the short-circuit protection delay time (t_PRO) in “ Electrical Characteristics”.

t_PRO[ms] × 1.2 × 10⁻³

120

CSP [μF] ≅

0.6

100

80

60

40

20

0

0.05

0.10

0.15 0.20

0.25

CSP [μF]

Figure 18 CSP vs. t_PRO

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STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

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5. External transistor

A bipolar (NPN) or enhanced (Nch) MOS FET transistor can be used as an external transistor.

5.1 Bipolar NPN type

The driving ability to increase output current by using a bipolar transistor is determined based on the h_FEvalue

and R_bvalue of the bipolar transistor. Figure 19 shows the peripheral circuit.

V_DD

C_b

2200 pF

I_PK

Pch

Nch

EXT

R_b

1 kΩ

Figure 19 External Transistor Peripheral Circuit

The recommended R_bvalue is around 1 kΩ. Calculate the required base current (I_b) based on the h_FEvalue of

I_PK

h_FE

the bipolar transistor by using I_b=

, and then select an R_bvalue smaller than that determined using:

V_DD− 0.7

0.4

R_b=

－

I_b

I_EXTH

Smaller R_bvalues increase the output current, but decrease the efficiency. Actually, the current might flow on

pulses or the V_DDor V_SSvoltage might drop due to wiring resistance, so determine the optimum value based on

experimentation.

Inserting a speed-up capacitor (C_b) in parallel with the R_bresistor as shown in Figure 19 reduces switching loss

and increases efficiency.

1

2 × π × R_b× f_OSC× 0.7

Select a speed-up capacitor for which the C_bvalue satisfies C_b≤

.

Actually, however, the optimum C_bvalue varies depending on the characteristics of the bipolar transistor used,

so determine the optimum value based on experimentation.

5.2 Enhanced MOS FET type

Use an Nch power MOS FET. A MOS FET that has low ON-resistance (R_ON) and input capacitance (C_ISS) is

ideal for gaining efficiency. The ON-resistance and input capacitance generally have a tradeoff relationship.

ON-resistance is efficient in the range where the output current is high with relatively low frequency switching,

and input capacitance is efficient in the range where the output current is medium to low with high frequency

switching. Therefore, select a MOS FET for which the ON-resistance and input capacitance are optimum under

your usage conditions.

The input voltage (V_DD) is supplied as the gate voltage of a MOS FET, so select a MOS FET for which the gate

withstand voltage is higher than the maximum value used for the input voltage, and for which the drain

withstand voltage is greater than or equal to the output voltage (V_OUT) + the forward voltage of the diode (V_D).

If a MOS FET for which the threshold value is near the UVLO detection voltage is used, a high current flows

upon power-on, and, in the worst case, the output voltage might not increase and the timer latch type

short-circuit protection circuit might operate. Therefore, select a MOS FET for which the threshold value is

sufficiently lower than the UVLO detection voltage.

22

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6. Output voltage setting resistors (R_FB1, R_FB2), capacitor for phase compensation (C_FB)

For the S-8365/8366 Series, V_OUTcan be set to any value by using external divider resistors. Connect the divider

resistors between the VOUT and VSS pins.

Because V_FB= 0.6 V typ., V_OUTcan be calculated by using the following equation :

R_FB1+ R_FB2

V_OUT

=

× 0.6

R_FB2

Connect divider resistors R_FB1and R_FB2as close to the IC as possible to minimize the effects of noise. If noise has

an effect, adjust the values of R_FB1and R_FB2so that R_FB1+ R_FB2< 100 kΩ.

C_FB, which is connected in parallel with R_FB1, is a capacitor for phase compensation.

By setting the zero point (the phase feedback) by adding capacitor C_FBto output voltage setting resistor R_FB1in

parallel, the phase margin increases, improving the stability of the feedback loop. To effectively use the feedback

portion of the phase based on the zero point, define C_FBby using the following equation :

L × C_OUT

3 × R_FB1

V_OUT

V_DD

C_FB

≅

×

This equation is only a guide.

The following explains the optimum setting.

To efficiently use the feedback portion of the phase based on the zero point, specify settings so that the phase

feeds back at the zero point frequency (f_zero) of R_FB1and C_FBaccording to the phase delay at the pole frequency

(f_pole) of L and C_OUT. The zero point frequency is generally set slightly higher than the pole frequency.

The following equations are used to determine the pole frequency of L and C_OUTand the zero point frequency set

using R_FB1and C_FB.

1

V_DD

f_pole

f_zero

≅

×

V_OUT

2 × π × L × C_OUT

1

2 × π × R_FB1× C_FB

The transient response can be improved by setting the zero point frequency in a lower frequency range. If, however,

the zero point frequency is set in a significantly lower range, the gain increases in the range of high frequency and

the phase margin decreases. This might result in unstable operation. Determine the proper value after sufficient

evaluation with actual application.

The typical constants based on our evaluation are shown in Table 15.

Table 15 Example of Constant for External Parts

C

_OUT[μF]

V

_OUT(S)[V]

V_DD[V]

R_FB1[kΩ]

R_FB2[kΩ]

C_FB[pF]

L [μH]

1.8

1.2

1.8

3.3

30

15

100

82

68

56

39

33

39

33

3.3

2.2

3.3

2.2

3.3

2.2

3.3

2.2

3.3

2.2

10

22

3.32

5.0

68

110

210

360

5.0

9.0

15.0

23

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

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Rev.2.1_01

 Standard Circuit

(1) With short-circuit protection (SNT-6A, SOT-23-6)

L

SD

V_OUT

VDD

Triangular wave

oscillation circuit

UVLO

circuit

C_FB

FB

Error

amplifier

PWM comparator

R_FB1

M1

PWM control, or

PWM / PFM switching

control circuit

+

−

+

−

EXT

R_FB2

Timer latch short-circuit

protection circuit

Reference voltage

with soft-start circuit

ON/OFF

circuit

V_INC_IN

C_OUT

0.1 μF

ON/OFF

CSP

VSS

Ground point

Figure 20

(2) Without short-circuit protection (SOT-23-5)

L

SD

V_OUT

VDD

Triangular wave

oscillation circuit

UVLO

circuit

C_FB

FB

Error

amplifier

PWM comparator

R_FB1

M1

PWM control, or

PWM / PFM switching

control circuit

+

−

+

−

EXT

R_FB2

Reference voltage

with soft-start circuit

ON/OFF

circuit

V_INC_IN

C_OUT

0.1 μF

ON/OFF

VSS

Ground point

Figure 21

24

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

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(3) Low input voltage (SOT-23-5)

L

SD

V_OUT

IC internal

power supply

Triangular wave

oscillation circuit

VDD

C_FB

Error

amplifier

PWM comparator

C_b

R_FB1

Q1

PWM control, or

+

−

PWM / PFM switching

control circuit

+

−

R_b

FB

EXT

R_FB2

Reference voltage

with soft-start circuit

C_OUT

ON/OFF

circuit

0.1 μF

V_INC_IN

ON/OFF

VSS

Ground point

Figure 22

Caution The above connection diagram and constant will not guarantee successful operation. Perform

thorough evaluation using an actual application to set the constants.

 Precaution

• Mount external capacitors and inductor as close as possible to the IC. Set single point ground.

• Characteristics ripple voltage and spike noise occur in IC containing switching regulators. Moreover rush current

flows at the time of a power supply injection. Because these largely depend on the inductor, the capacitor and

impedance of power supply used, fully check them using an actually mounted model.

• The 0.1 μF capacitor connected between the VDD and VSS pins is a bypass capacitor. It stabilizes the power

supply in the IC when application is used with a heavy load, and thus effectively works for stable switching

regulator operation. Allocate the bypass capacitor as close to the IC as possible, prioritized over other parts.

• Although the IC contains a static electricity protection circuit, static electricity or voltage that exceeds the limit of

the protection circuit should not be applied.

• The power dissipation of the IC greatly varies depending on the size and material of the board to be connected.

Perform sufficient evaluation using an actual application before designing.

• SII Semiconductor Corporation claims no responsibility for any disputes arising out of or in connection with any

infringement by products including this IC of patents owned by a third party.

25

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

S-8365/8366 Series

Rev.2.1_01

 Application Circuits

Application circuits are examples. They may always not guarantee successful operation.

1. External parts for application circuits

Table 16 Characteristics of External Parts

Part

Part Name

Manfuacturer

Characteristics

2.2 μH, DCR^*1= 0.020 Ω, I_MAX^*2= 4.2 A,

L × W × H = 6.0 × 6.0 × 2.8 mm

NR6028T-2R2M

Taiyo Yuden Co., Ltd.

3.3 μH, DCR^*1= 0.060 Ω, I_MAX^*2= 2.7 A,

L × W × H = 5.0 × 5.2 × 2.2 mm

LTF5022T-3R3M

VLF3010ST-2R2M

VLF3010ST-3R3M

RB070M-30TR

RB050LA-30

Inductor

2.2 μH, DCR^*1= 0.114 Ω, I_MAX^*2= 1.1 A,

L × W × H = 3.0 × 3.0 × 1.0 mm

TDK Corporation

Rohm Co., Ltd.

3.3 μH, DCR^*1= 0.168 Ω, I_MAX^*2= 0.87 A,

L × W × H = 3.0 × 3.0 × 1.0 mm

V_F^*3= 0.44 V, I_F^*4= 1.5 A, V_R^*5= 30 V

L × W × H = 3.5 × 1.6 × 0.9 mm

V_F^*3= 0.45 V, I_F^*4= 3.0 A, V_R^*5= 30 V

L × W × H = 4.7 × 2.6 × 1.05 mm

V_DSS^*6= 20 V, V_GSS^*7= ±8 V, I_D^*8= 5.0 A,

Q_G^*9= 12 nC max.

Diode

VISHAY

INTERTECHNOLOGY,

INC.

Si2312BDS

2SD2652

R_DS(ON)^*10= 0.047 Ω max. (V_GS^*11= 2.5 V)

L × W × H = 2.9 × 2.64 × 1.12 mm

V_CEO^*12= 12 V, V_EBO^*13= 6 V, I_C^*14= 1.5 A,

h_FE^*15= 270 min./680 max. (V_CE/I_C= 2 V/200 mA)

L × W × H = 2.0 × 1.25 × 0.9 mm

10 μF, E_DC^*16= 6.3 V, X5R,

Transistor

Rohm Co., Ltd.

JMK107BJ106MA-T

LMK212BJ106KD-T

EMK316BJ106KF-T

TMK325B7106MN-T

C2012X5R1A106KT

C1005X7R1C104KT

L × W × H = 1.6 × 0.8 × 0.95 mm

10 μF, E_DC^*16= 10 V, X5R,

L × W × H = 2.0 × 1.25 × 0.95 mm

10 μF, E_DC^*16= 16 V, X5R,

L × W × H = 3.2 × 1.6 × 1.25 mm

10 μF, E_DC^*16= 25 V, X7R,

L × W × H = 3.2 × 2.5 × 2.1 mm

10 μF, E_DC^*16= 10 V, X5R,

L × W × H = 2.0 × 1.25 × 1.45 mm

0.1 μF, E_DC^*16= 16 V, X7R,

Taiyo Yuden Co., Ltd.

Capacitor

TDK Corporation

L × W × H = 1.0 × 0.5 × 0.55 mm

Murata Manufacturing, 10 μF, E_DC^*16= 10 V, X7R,

GRM31CR71A106KA

DC resistance

Co., Ltd.

L × W × H = 3.2 × 1.6 × 1.6 mm

* 1. DCR :

* 2. I_MAX

* 3. V_F:

* 4. I_F:

:

Maximum allowable current

Forward voltage

Forward current

* 5. V_R:

Reverse voltage

* 6. V_DSS

* 7. V_GSS

* 8. I_D:

:

Drain-source voltage (during short-circuiting between the gate and source)

Gate-source voltage (during short-circuiting between the drain and source)

Drain current

* 9. Q_G:

Gate charge

*10. R_{DS(ON )}

*11. V_GS

:

On-resistance between the drain and source

Gate-source voltage

Collector-emitter voltage

Emitter-base voltage

Collector current

:

*12. V_CEO

*13. V_EBO

*14. I_C:

:

*15. h_FE

*16. E_DC

26

:

Direct current gain

Rated voltage

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

Rev.2.1_01

S-8365/8366 Series

2. Power supply for LCD

Following shows a circuit example and its characteristics for driving an LCD panel (with 9 V and 15 V outputs).

L

SD

V_OUT

M1

VDD

C_FB

EXT

R_FB1

C_INC_DD

C_OUT

ON/OFF S-8365/8366

Series

FB

R_FB2

CSP

VSS

Figure 23 Circuit Example (Power Supply for LCD)

Table 17 External Part Examples (Power Supply for LCD) (1 / 2)

Output

IC Product

Name

M1 Product

Name

SD Product

Name

Condition

L Product Name

Voltage

1

2

3

4

9 V

S-8365AABBA

S-8366AABBA

S-8365AABBA

S-8366AABBA

NR6028T2R2M

Si2312BDS

RB050LA-30

15 V

Table 17 External Part Examples (Power Supply for LCD) (2 / 2)

C_INProduct Name C_OUTProduct Name R_FB1R_FB2C_FB

Condition

C_DD

1

2

3

4

LMK212BJ106KG-T EMK316BJ106KF-T × 2 280 kΩ 20 kΩ

LMK212BJ106KG-T EMK316BJ106KF-T × 1 280 kΩ 20 kΩ

LMK212BJ106KG-T TMK325B7106MN-T × 2 360 kΩ 15 kΩ

LMK212BJ106KG-T TMK325B7106MN-T × 1 360 kΩ 15 kΩ

22 pF

27 pF

33 pF

0.1 μF

Caution The above connection will not guarantee successful operation. Perform thorough evaluation

using an actual application to set the constant.

27

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

S-8365/8366 Series

Rev.2.1_01

3. Output Characteristics of Power Supply for LCD

Following shows the output current (I_OUT) vs. efficiency (η) and output current (I_OUT) vs. output voltage (V_OUT

characteristics for conditions 1 to 4 in Table 17.

)

Condition 1

Condition 2

100

90

80

70

60

50

40

30

20

10

0

9.2

9.0

8.8

8.6

8.4

8.2

8.0

7.8

VIN = 2.0 V

VIN = 3.3 V

VIN = 3.6 V

V

IN = 2.0 V

IN = 3.3 V

IN = 3.6 V

0.1

1

10

100

1000

0.1

1

10

100

1000

I

OUT [mA]

I

OUT [mA]

Condition 3

15.5

15.0

14.5

14.0

13.5

13.0

V

IN = 3.3 V

IN = 3.6 V

IN = 5.5 V

10

100

I

OUT [mA]

Condition 4

100

90

80

70

60

50

40

30

20

10

0

15.5

15.0

14.5

14.0

13.5

13.0

V

IN = 5.5 V

IN = 3.6 V

IN = 3.3 V

V

IN = 3.3 V

IN = 3.6 V

IN = 5.5 V

0.1

1

10

100

1000

10

100

IOUT [mA]

28

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

Rev.2.1_01

S-8365/8366 Series

4. Power supply for high output current

Following shows a circuit example and its characteristics for outputting 3.3 V from two dry cells (1.8 V) and

satisfying I_OUT= 800 mA.

L

SD

V_OUT

M1

VDD

C_FB

EXT

R_FB1

C_INC_DD

C_OUT

ON/OFF

S-8365/8366

Series

FB

CSP

R_FB2

CSP

VSS

Figure 24 Circuit Example (Power Supply for High Output Current)

Table 18 External Part Examples (Power Supply for High Output Current) (1 / 2)

Output

M1 Product

Name

SD Product

Name

Condition

IC Product Name

L Product Name

Voltage

1

2

3

4

3.32 V

S-8365AABBA

S-8365ABBBA

S-8366AABBA

S-8366ABBBA

NR6028T2R2M

LTF5022-3R3M

NR6028T2R2M

LTF5022-3R3M

Si2312BDS

RB050LA-30

Table 18 External Part Examples (Power Supply for High Output Current) (2 / 2)

Condition

C_INProduct Name

C2012X5R1A106KT

C_OUTProduct Name

R_FB1

R_FB2

C_FB

C_DD

1

2

3

4

GRM31CR71A106KA × 2

68 kΩ

15 kΩ

68 pF

82 pF

68 pF

82 pF

0.1 μF

Caution The above connection will not guarantee successful operation. Perform thorough evaluation

using an actual application to set the constant.

29

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

S-8365/8366 Series

Rev.2.1_01

5. Output characteristics of power supply for high output current

Following shows the output current (I_OUT) vs. efficiency (η) and output current (I_OUT) vs. output voltage (V_OUT

characteristics for conditions 1 to 4 in Table 18.

)

Condition 1

3.5

3.4

3.3

3.2

3.1

3.0

2.9

2.8

2.7

2.6

2.5

V

IN = 1.8 V

IN = 2.7 V

0.1

1

10

100

1000 10000

IOUT [mA]

Condition 2

100

90

80

70

60

50

40

30

20

10

0

V

IN = 1.8 V

IN = 2.7 V

0.1

1

10

100

1000 10000

I

OUT [mA]

Condition 3

100

90

80

70

60

50

40

30

20

10

0

3.5

3.4

3.3

3.2

3.1

3.0

2.9

2.8

2.7

2.6

2.5

V

IN = 1.8 V

IN = 2.7 V

V

IN = 1.8 V

IN = 2.7 V

0.1

1

10

100

0.1

1

10

100

1000 10000

I

OUT [mA]

IOUT [mA]

Condition 4

100

90

80

70

60

50

40

30

20

10

0

V

IN = 1.8 V

IN = 2.7 V

0.1

1

10

100

I

OUT [mA]

30

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

Rev.2.1_01

S-8365/8366 Series

6. Circuit for low power supply voltage applications

Following shows a circuit example that starts up by using a dry cell (1.2 V) and its characteristics.

L

SD

V_OUT

Cb

Rb

Q1

VDD

C_FB

R_FB1

EXT

FB

ON/OFF

C_INC_DD

C_OUT

S-8365/8366

Series

R_FB2

VSS

Figure 25 Circuit Example (Circuit for Low Power Supply Voltage Applications)

Table 19 External Part Examples (Circuit for Low Power Supply Voltage Applications) (1 / 2)

Q1

Output

IC Product

Name

Condition

L Product Name

Product

Name

SD Product Name

Voltage

1

2

3.32 V

S-8366AAAAA

S-8366ABAAA

VLF3010ST-2R2M

VLF3010ST-3R3M

2SD2652

RB070M-30TR

Table 19 External Part Examples (Circuit for Low Power Supply Voltage Applications) (2 / 2)

Condition

C_INProduct Name

JMK107BJ106MA-T

C_OUTProduct Name

LMK212BJ106KD-T × 1

R_FB1

R_FB2

C_FB

C_DD

1

2

68 kΩ 15 kΩ 68 pF 0.1 μF

68 kΩ 15 kΩ 82 pF 0.1 μF

Caution The above connection will not guarantee successful operation. Perform thorough evaluation

using an actual application to set the constant.

31

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

S-8365/8366 Series

Rev.2.1_01

7. Output characteristics of circuits for low power supply voltage applications

Following shows the output current (I_OUT) vs. efficiency (η) and output current (I_OUT) vs. output voltage (V_OUT

characteristics for conditions 1 and 2 in Table 19.

)

Condition 1

Condition 2

90

80

70

60

50

40

30

20

10

0

3.5

3.4

3.3

3.2

3.1

3.0

2.9

2.8

2.7

2.6

2.5

V

IN = 0.9 V

IN = 1.2 V

IN = 1.5 V

V

IN = 0.9 V

IN = 1.2 V

IN = 1.5 V

0.1

1

10

100

1000

0.1

1

10

100

1000

IOUT [mA]

32

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

Rev.2.1_01

S-8365/8366 Series

 Characteristics (Typical Data)

1. Examples of Major Power Supply Dependence Characteristics (Ta = 25°C)

(1) Current consumption during operation (I_SS1) vs.

(2) Current consumption during shutdown (I_SSS) vs.

Input voltage (V_IN)

700

1.0

600

0.8

0.6

0.4

0.2

1.2 MHz

500

400

300

600 kHz

200

100

0

0.0

1.8 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5

V

IN [V]

VIN [V]

(3) Oscillation frequency (f_osc) vs. Input voltage (V_IN)

f_OSC= 1.2 MHz

f_OSC= 600 kHz

1.4

700

650

600

550

500

1.3

1.2

1.1

1.0

1.8 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5

V

IN [V]

VIN [V]

(4) Maximum duty ratio (MaxDuty) vs. Input voltage (V_IN)

(5) Soft-start time (t_SS) vs. Input voltage (V_IN)

100

10

9

8

7

6

5

4

3

2

1

0

95

600 kHz

90

85

1.2 MHz

80

75

70

1.8 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5

V

IN [V]

VIN [V]

(6) PWM / PFM switching duty ratio (PFMDuty) vs. Input voltage (V_IN)

40

35

30

25

20

15

10

5

0

1.8 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5

V

IN [V]

33

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

S-8365/8366 Series

Rev.2.1_01

(7) High level input voltage (V_SH) vs. Input voltage (V_IN) (8) Low level input voltage (V_SL) vs. Input voltage (V_IN)

0.8

0.7

0.6

0.5

0.4

0.3

0.8

0.7

0.6

0.5

0.4

0.3

1.8 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5

V

IN [V]

VIN [V]

(9) FB voltage (V_FB) vs. Input voltage (V_IN)

(10) Short-circuit protection delay time (t_PRO) vs. Input

voltage (V_IN)

CSP = 0.1 μF

0.8

0.7

0.6

0.5

0.4

80

70

60

50

40

30

20

10

0.3

0

1.8 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5

V

IN [V]

VIN [V]

(11) EXT pin output current “H” (I_EXTH) vs. Input voltage (V_IN)

(12) EXT pin output current “L” (I_EXTL) vs. Input voltage (V_IN)

−

300

250

200

150

100

300

250

200

150

100

50

−

50

0

1.8 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5

V

IN [V]

VIN [V]

34

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

Rev.2.1_01

S-8365/8366 Series

2. Examples of Major Temperature Characteristics (Ta = −40 to 85°C)

(1) Current consumption during operation (I_SS1) vs. Temperature (Ta)

f_OSC= 1.2 MHz

f_OSC= 600 kHz

700

600

500

400

300

200

100

0

700

600

500

400

300

200

100

0

VDD = 5.5 V

VDD = 3.6 V

VDD = 2.0 V

VDD = 5.5 V

VDD = 3.6 V

VDD = 2.0 V

−

40

−

25

0

25

Ta [C]

50

75 85

−

40

−

25

0

25

50

75 85

Ta [C]

(2) Current consumption during shutdown (I_SSS) vs. Temperature (Ta)

1.0

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2

0.1

0.0

V

DD = 5.5 V

DD = 3.6 V

DD = 2.0 V

−

40

−

25

0

25

Ta [C]

50

75 85

(3) Oscillation frequency (f_OSC) vs. Temperature (Ta)

_OSC= 1.2 MHz

f

f_OSC= 600 kHz

1.4

1.3

1.2

1.1

1.0

700

650

600

550

500

V

DD = 5.5 V

DD = 3.6 V

DD = 2.0 V

V

DD = 5.5 V

DD = 3.6 V

DD = 2.0 V

−

40

−

25

0

25

50

75 85

−

40

−

25

0

25

50

75 85

Ta [C]

(4) Maximum duty ratio (MaxDuty) vs. Temperature (Ta)

f_OSC= 1.2 MHz

f_OSC= 600 kHz

100

95

90

85

80

75

70

VDD = 5.5 V

VDD = 3.6 V

VDD = 2.0 V

95

90

VDD = 5.5 V

VDD = 3.6 V

VDD = 2.0 V

85

80

75

70

−

40

−

25

0

25

50

75 85

−

40

−

25

0

25

50

75 85

Ta [C]

35

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

S-8365/8366 Series

Rev.2.1_01

(5) Soft-start time (t_SS) vs. Temperature (Ta)

(6) PWM / PFM switching duty ratio (PFMDuty) vs.

Temperature (Ta)

10

9

36

34

32

30

28

26

24

22

20

8

7

6

5

4

3

VDD = 5.5 V

VDD = 3.6 V

VDD = 2.0 V

VDD = 5.5 V

VDD = 3.6 V

VDD = 2.0 V

−

40

−

25

0

25

50

75 85

−

40

−

25

0

25

50

75 85

Ta [C]

(7) High level input voltage (V_SH) vs. Temperature (Ta)

(8) Low level input voltage (V_SL) vs. Temperature (Ta)

0.8

V

DD = 5.5 V

DD = 3.6 V

DD = 2.0 V

0.7

0.6

0.5

0.4

0.3

0.7

0.6

0.5

0.4

0.3

V

DD = 5.5 V

DD = 3.6 V

DD = 2.0 V

−

40

−

25

0

25

50

75 85

−

40

−

25

0

25

50

75 85

Ta [C]

(9) UVLO release voltage (V_UVLO+) vs. Temperature (Ta)

(10) UVLO hysteresis width (VUVLOHYS) vs. Temperature (Ta)

1.80

1.75

1.70

1.65

1.60

1.55

1.50

1.45

1.40

0.20

0.18

0.16

0.14

0.12

0.10

0.08

0.06

0.04

0.02

0.00

−

40

−

25

0

25

50

75 85

−

40

−

25

0

25

50

75 85

Ta [C]

(11) FB voltage (V_FB) vs. Temperature (Ta)

(12) Short-circuit protection delay time (t_PRO) vs.

Temperature (Ta)

CSP = 0.1 μF

80

0.62

VDD = 5.5 V

70

60

50

40

30

VDD = 5.5 V

VDD = 3.6 V

VDD = 2.0 V

VDD = 3.6 V

VDD = 2.0 V

0.61

0.60

0.59

0.58

−

40

−

25

0

25

50

75 85

−

40

−

25

0

25

50

75 85

Ta [C]

36

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

Rev.2.1_01

S-8365/8366 Series

(13) EXT pin output current “H” (I_EXTH) vs.

Temperature (Ta)

(14) EXT pin output current “L” (I_EXTL) vs. Temperature (Ta)

−

350

300

250

200

150

100

350

300

250

200

150

VDD = 5.5 V

VDD = 3.6 V

VDD = 2.0 V

VDD = 5.5 V

100

VDD = 3.6 V

−

50

0

50

VDD = 2.0 V

0

−

40

−

25

0

25

50

75 85

−40

−25

0

25

50

75 85

Ta [C]

(15) Operating start voltage (V_ST1) vs. Temperature (Ta)

f_OSC= 1.2 MHz

f_OSC= 600 kHz

1.0

0.8

0.6

0.4

0.2

0.0

S-8365 Series

0.8

S-8365 Series

0.6

S-8366 Series

0.4

0.2

0.0

−

40

−

25

0

25

50

75 85

25

Ta [C]

50

75 85

Ta [C]

(16) Oscillation start voltage (V_ST2) vs. Temperature (Ta)

f_OSC= 1.2 MHz

f_OSC= 600 kHz

1.4

1.2

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.0

1.0

S-8365 Series

0.8

S-8365 Series

0.6

0.4

S-8366 Series

0.2

S-8366 Series

0.0

−

40

−

25

0

25

50

75 85

25

50

75 85

Ta [C]

(17) Operation holding voltage (V_HLD) vs. Temperature (Ta)

f_OSC= 1.2 MHz

f_OSC= 600 kHz

1.4

1.2

1.0

1.4

1.2

1.0

0.8

0.6

0.4

0.2

0.0

S-8365 Series

S-8366 Series

0.8

0.6

0.4

0.2

0.0

S-8365 Series

S-8366 Series

−

40

−

25

0

25

50

75 85

25

50

75 85

Ta [C]

37

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

S-8365/8366 Series

Rev.2.1_01

3. Examples of Transient Response Characteristics

Unless otherwise specified, the used parts are those in Table 10 External Parts List.

3.1 At power-on (V_OUT(S)= 5.0 V, V_IN= 0 V → 3.3 V, PWM control, Ta = 25°C)

(1) f_OSC= 1.2 MHz, I_OUT= 1 mA S-8365AABBA

(2) f_OSC= 1.2 MHz, I_OUT= 600 mA S-8365AABBA

6.0

5.0

4.0

3.0

2.0

1.0

0.0

6.0

5.0

4.0

3.0

2.0

1.0

V

OUT

IN

IL

0.0

20

0

5

10

t [ms]

15

(3) f_OSC= 600 kHz, I_OUT= 1 mA S-8365ABBBA

(4) f_OSC= 600 kHz, I_OUT= 600 mA S-8365ABBBA

6.0

5.0

4.0

3.0

2.0

1.0

0.0

5.0

V

OUT

IN

4.0

3.0

2.0

1.0

0.0

I

L

0

5

10

t [ms]

15

20

3.2 At power-on (V_OUT(S)= 5.0 V, V_IN= 0 V → 3.3 V, PWM / PFM switching control, Ta = 25°C))

(1) f_OSC= 1.2 MHz, I_OUT= 1 mA S-8366AABBA

(2) f_OSC= 1.2 MHz, I_OUT= 600 mA S-8366AABBA

6.0

5.0

4.0

3.0

2.0

1.0

0.0

5.0

V

OUT

IN

4.0

3.0

2.0

1.0

0.0

IL

0

5

10

t [ms]

15

20

(3) f_OSC= 600 kHz, I_OUT= 1 mA S-8366ABBBA

(4) f_OSC= 600 kHz, I_OUT= 600 mA S-8366ABBBA

6.0

5.0

4.0

3.0

2.0

1.0

0.0

6.0

5.0

4.0

3.0

2.0

1.0

0.0

6.0

5.0

V

OUT

IN

V

OUT

IN

4.0

3.0

2.0

1.0

0.0

4.0

3.0

2.0

1.0

0.0

I

L

IL

0

5

10

t [ms]

15

20

0

5

10

t [ms]

15

20

38

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

Rev.2.1_01

S-8365/8366 Series

3.3 Shutdown pin response (V_OUT= 5.0 V, V_IN= 3.3 V, V_ON/OFF= 0 V → 3.3 V, PWM control, Ta = 25°C)

(1) f_OSC= 1.2 MHz, I_OUT= 1 mA S-8365AABBA

(2) f_OSC= 1.2 MHz, I_OUT= 600 mA S-8365AABBA

6.0

5.0

4.0

3.0

2.0

1.0

0.0

6.0

5.0

4.0

3.0

2.0

1.0

0.0

6.0

5.0

4.0

3.0

2.0

1.0

0.0

5.0

V

OUT

V

OUT

4.0

3.0

2.0

1.0

0.0

ON/OFF

I

L

IL

0

5

10

t [ms]

15

20

0

5

10

t [ms]

15

20

(3) f_OSC= 600 kHz, I_OUT= 1 mA S-8365ABBBA

(4) f_OSC= 600 kHz, I_OUT= 600 mA S-8365ABBBA

6.0

5.0

4.0

3.0

2.0

1.0

0.0

5.0

V

OUT

4.0

3.0

2.0

1.0

0.0

ON/OFF

IL

0

5

10

t [ms]

15

20

3.4 Shutdown pin response (V_OUT= 5.0 V, V_IN= 3.3 V, V_ON/OFF= 0 V

→ 3.3 V, PWM / PFM switching control, Ta = 25°C)

(1) f_OSC= 1.2 MHz, I_OUT= 1 mA S-8366AABBA

(2) f_OSC= 1.2 MHz, I_OUT= 600 mA S-8366AABBA

6.0

5.0

4.0

3.0

2.0

1.0

0.0

6.0

5.0

4.0

3.0

2.0

1.0

0.0

5.0

V

OUT

V

OUT

4.0

3.0

2.0

1.0

0.0

4.0

3.0

2.0

1.0

0.0

ON/OFF

I

L

IL

0

5

10

t [ms]

15

20

0

5

10

t [ms]

15

20

(3) f_OSC= 600 kHz, I_OUT= 1 mA S-8366ABBBA

(4) f_OSC= 600 kHz, I_OUT= 600 mA S-8366ABBBA

6.0

5.0

4.0

3.0

2.0

1.0

0.0

6.0

5.0

4.0

3.0

2.0

1.0

0.0

5.0

V

OUT

V

OUT

4.0

3.0

2.0

1.0

0.0

4.0

3.0

2.0

1.0

0.0

ON/OFF

I

L

IL

0

5

10

t [ms]

15

20

0

5

10

t [ms]

15

20

39

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

S-8365/8366 Series

Rev.2.1_01

3.5 Power supply voltage fluctuations (V_OUT= 5.0 V, I_OUT= 1 mA, PWM control, Ta = 25°C)

(1) f_OSC= 1.2 MHz, V_IN= 2.8 V → 3.8 V S-8365AABBA

(2) f_OSC= 1.2 MHz, V_IN= 3.8 V → 2.8 V S-8365AABBA

5.05

5.00

4.95

4.90

4.85

4.80

4.75

12

10

8

V

OUT

IN

6

V

4

2

0

2

4

6

8

10

t [ms]

(3) f_OSC= 600 kHz, V_IN= 2.8 V → 3.8 V S-8365ABBBA

(4) f_OSC= 600 kHz, V_IN= 3.8 V → 2.8 V S-8365ABBBA

3.6 Power supply voltage fluctuations (V_OUT= 5.0 V, I_OUT= 1 mA, PWM / PFM switching control, Ta = 25°C)

(1) f_OSC= 1.2 MHz, V_IN= 2.8 V → 3.8 V S-8366AABBA (2) f_OSC= 1.2 MHz, V_IN= 3.8 V → 2.8 V S-8366AABBA

5.15

5.10

5.05

5.00

4.95

4.90

4.85

12

10

8

5.15

5.10

5.05

5.00

4.95

4.90

4.85

12

10

8

V

OUT

IN

V

OUT

IN

6

4

V

2

0

2

4

6

8

10

0.0

0.4

0.8

1.2

1.6

2.0

t [ms]

(3) f_OSC= 600 kHz, V_IN= 2.8 V → 3.8 V S-8366ABBBA

(4) f_OSC= 600 kHz, V_IN= 3.8 V → 2.8 V S-8366ABBBA

5.15

5.10

5.05

5.00

4.95

4.90

4.85

12

10

8

V

OUT

IN

6

4

V

2

0

2

4

6

8

10

t [ms]

40

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

Rev.2.1_01

S-8365/8366 Series

3.7 Power supply voltage fluctuations (V_OUT= 5.0 V, I_OUT= 500 mA, PWM control, Ta = 25°C)

(1) f_OSC= 1.2 MHz, V_IN= 2.8 V → 3.8 V S-8365AABBA

(2) f_OSC= 1.2 MHz, V_IN= 3.8 V → 2.8 V S-8365AABBA

5.60

5.40

5.20

5.00

4.80

4.60

4.40

4.20

4.00

16

14

12

10

8

6

4

2

0

V

OUT

IN

V

0.0

0.2

0.4

0.6

0.8

1.0

t [ms]

(3) f_OSC= 600 kHz, V_IN= 2.8 V → 3.8 V S-8365ABBBA

(4) f_OSC= 600 kHz, V_IN= 3.8 V → 2.8 V S-8365ABBBA

5.60

5.40

5.20

5.00

4.80

4.60

4.40

4.20

4.00

16

14

12

10

8

V

OUT

IN

6

4

2

V

0

0.0

0.2

0.4

0.6

0.8

1.0

t [ms]

3.8 Power supply voltage fluctuations (V_OUT= 5.0 V, I_OUT= 500 mA, PWM / PFM switching control, Ta = 25°C)

(1) f_OSC= 1.2 MHz, V_IN= 2.8 V → 3.8 V S-8366AABBA (2) f_OSC= 1.2 MHz, V_IN= 3.8 V → 2.8 V S-8366AABBA

5.60

5.40

5.20

5.00

4.80

4.60

4.40

4.20

4.00

16

14

12

10

8

6

4

2

0

5.60

5.40

5.20

5.00

4.80

4.60

4.40

4.20

4.00

16

14

12

10

8

6

4

2

0

V

OUT

IN

V

OUT

IN

V

0.0

0.2

0.4

0.6

0.8

1.0

0.0

0.2

0.4

0.6

0.8

1.0

t [ms]

(3) f_OSC= 600 kHz, V_IN= 2.8 V → 3.8 V S-8366ABBBA

(4) f_OSC= 600 kHz, V_IN= 3.8 V → 2.8 V S-8366ABBBA

5.60

5.40

5.20

5.00

4.80

4.60

4.40

4.20

4.00

16

14

12

10

8

5.60

5.40

5.20

5.00

4.80

4.60

4.40

4.20

4.00

16

14

12

10

8

V

OUT

IN

6

4

6

4

2

0

V

2

0

0.0

0.2

0.4

0.6

0.8

1.0

0.0

0.2

0.4

0.6

0.8

1.0

t [ms]

41

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

S-8365/8366 Series

Rev.2.1_01

3.9 Load fluctuations (V_OUT= 5.0 V, V_IN= 3.3 V, I_OUT= 0.1 mA → 100 mA → 0.1 mA, PWM control, Ta = 25°C)

(1) f_OSC= 1.2 MHz, I_OUT= 0.1 mA

→

100 mA S-8365AABBA

(2) f_OSC= 1.2 MHz, I_OUT= 100 mA → 0.1 mA S-8365AABBA

5.40

5.30

5.20

5.10

5.00

4.90

4.80

4.70

4.60

1600

1400

1200

1000

800

600

400

200

0

V

OUT

IOUT

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

t [ms]

(3) f_OSC= 600 kHz, I_OUT= 0.1 mA

→

100 mA S-8365ABBBA

(4) f_OSC= 600 kHz, I_OUT= 100 mA → 0.1 mA S-8365ABBBA

5.40

5.30

5.20

5.10

5.00

4.90

4.80

4.70

4.60

1600

1400

1200

1000

800

600

400

200

0

V

OUT

IOUT

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

t [ms]

3.10

Load fluctuations (V_OUT= 5.0 V, V_IN= 3.3 V, I_OUT= 0.1 mA

→

100 mA

→

0.1 mA, PWM / PFM switching control, Ta = 25

°

C)

(1) f_OSC= 1.2 MHz, I_OUT= 0.1 mA

→

100 mA S-8366AABBA

(2) f_OSC= 1.2 MHz, I_OUT= 100 mA → 0.1 mA S-8366AABBA

(3) f_OSC= 600 kHz, I_OUT= 0.1 mA

→

100 mA S-8366ABBBA

(4) f_OSC= 600 kHz, I_OUT= 100 mA → 0.1 mA S-8366ABBBA

5.40

5.30

5.20

5.10

5.00

4.90

4.80

4.70

4.60

1600

5.40

5.30

5.20

5.10

5.00

4.90

4.80

4.70

4.60

1600

1400

1200

1000

800

600

400

200

0

1400

1200

1000

800

600

400

200

0

V

OUT

V

OUT

IOUT

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

t [ms]

0

5

10 15 20 25 30 35 40

t [ms]

42

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

Rev.2.1_01

S-8365/8366 Series

3.11 Load fluctuations (V_OUT= 5.0 V, V_IN= 3.3 V, I_OUT= 0.1 mA → 300 mA → 0.1 mA, PWM control, Ta = 25°C)

(1) f_OSC= 1.2 MHz, I_OUT= 0.1 mA

→

300 mA S-8365AABBA

(2) f_OSC= 1.2 MHz, I_OUT= 300 mA

→

0.1 mA S-8365AABBA

5.60

5.40

5.20

5.00

4.80

4.60

4.40

4.20

4.00

1600

5.60

5.40

5.20

5.00

4.80

4.60

4.40

4.20

4.00

1600

1400

1200

1000

800

600

400

200

0

1400

1200

1000

800

600

400

200

0

V

OUT

V

OUT

IOUT

0.0

0.2

0.4

0.6

0.8

1.0

0

5

10 15 20 25 30 35 40

t [ms]

(3) f_OSC= 600 kHz, I_OUT= 0.1 mA

→

300 mA S-8365ABBBA

(4) f_OSC= 600 kHz, I_OUT= 300 mA → 0.1 mA S-8365ABBBA

5.60

5.40

5.20

5.00

4.80

4.60

4.40

4.20

4.00

1600

5.60

5.40

5.20

5.00

4.80

4.60

4.40

4.20

4.00

1600

1400

1200

1000

800

600

400

200

0

1400

1200

1000

800

600

400

200

0

V

OUT

V

OUT

IOUT

0.0

0.2

0.4

0.6

0.8

1.0

0

5

10 15 20 25 30 35 40

t [ms]

3.12

Load fluctuations (V_OUT= 5.0 V, V_IN= 3.3 V, I_OUT= 0.1 mA

→

300 mA

→

0.1 mA, PWM / PFM switching control, Ta = 25

°

C)

(1) f_OSC= 1.2 MHz, I_OUT= 0.1 mA

→

300 mA S-8366AABBA

(2) f_OSC= 1.2 MHz, I_OUT= 300 mA → 0.1 mA S-8366AABBA

5.60

5.40

5.20

5.00

4.80

4.60

4.40

4.20

4.00

1600

5.60

5.40

5.20

5.00

4.80

4.60

4.40

4.20

4.00

1600

1400

1200

1000

800

600

400

200

0

1400

1200

1000

800

600

400

200

0

V

OUT

V

OUT

IOUT

0.0

0.2

0.4

0.6

0.8

1.0

0

5

10 15 20 25 30 35 40

t [ms]

(3) f_OSC= 600 kHz, I_OUT= 0.1 mA

→

300 mA S-8366ABBBA

(4) f_OSC= 600 kHz, I_OUT= 300 mA → 0.1 mA S-8366ABBBA

5.60

5.40

5.20

5.00

4.80

4.60

4.40

4.20

4.00

1600

1400

1200

1000

800

600

400

200

0

V

OUT

I

OUT

0

10

20

30

t [ms]

40

50

43

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

S-8365/8366 Series

Rev.2.1_01

 Reference Data

Reference data is provided to determine specific external components. Therefore, the following data shows the

characteristics of the recommended external components selected for various applications.

1. External parts

Table 20 Efficiency vs. Output Current Characteristics and Output Voltage vs. Output Current Characteristics for

External Parts (1 / 2)

Oscillation

Frequency

Control

System

Output

Voltage

Condition Product Name

L

M1

SD

1

2

S-8365AABBA

S-8365ABBBA

S-8366AABBA

S-8366ABBBA

S-8365AABBA

S-8365ABBBA

S-8366AABBA

S-8366ABBBA

S-8365AABBA

S-8365ABBBA

S-8366AABBA

S-8366ABBBA

1.2 MHz

600 kHz

1.2 MHz

600 kHz

1.2 MHz

600 kHz

1.2 MHz

600 kHz

1.2 MHz

600 kHz

1.2 MHz

600 kHz

PWM

2.5 V

3.3 V

5.0 V

NR6028T-2R2M

LTF5022T-3R3M

NR6028T-2R2M

LTF5022T-3R3M

NR6028T-2R2M

LTF5022T-3R3M

NR6028T-2R2M

LTF5022T-3R3M

NR6028T-2R2M

LTF5022T-3R3M

NR6028T-2R2M

LTF5022T-3R3M

MCH3406

RB050LA-30

PWM

3

PWM / PFM

PWM

4

5

6

PWM

7

PWM / PFM

PWM

8

9

10

11

12

PWM

PWM / PFM

Table 20 Efficiency vs. Output Current Characteristics and Output Voltage vs. Output Current Characteristics for

External Parts (2 / 2)

Condition

C_IN

C_OUT

R_FB1

47 kΩ

68 kΩ

110 kΩ

R_FB2

C_FB

C_DD

1

2

C2012X5R1A106KT

GRM31CR71A106KA × 2

15 kΩ

68 pF

82 pF

68 pF

82 pF

68 pF

82 pF

68 pF

82 pF

56 pF

68 pF

56 pF

68 pF

0.1 μF

3

4

5

6

7

8

9

10

11

12

44

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

Rev.2.1_01

S-8365/8366 Series

The properties of the external parts are shown below.

Table 21 Characteristics of External Parts

Part

Part Name

Manfuacturer

Characteristics

2.2 μH, DCR^*1= 0.020 Ω, I_MAX^*2= 4.2 A,

L × W × H = 6.0 × 6.0 × 2.8 mm

3.3 μH, DCR^*1= 0.060 Ω, I_MAX^*2= 2.7 A,

L × W × H = 5.0 × 5.2 × 2.2 mm

V_F^*3= 0.45 V, I_F^*4= 3.0 A, V_R^*5= 30 V

L × W × H = 4.7 × 2.6 × 1.05 mm

V_DSS^*6= 20 V, V_GSS^*7= 10 V, I_D^*8= 3.0 A,

Q_G^*9= 8.8 nC typ.,

R_DS(ON)^*10= 0.082 Ω max. (V_GS^*11= 2.5 V)

L × W × H = 2.1 × 2.0 × 0.85 mm

10 μF, E_DC^*12= 10 V, X5R,

L × W × H = 2.0 × 1.25 × 1.45 mm

0.1 μF, E_DC^*12= 16 V, X7R,

NR6028T-2R2M

Taiyo Yuden Co., Ltd.

TDK Corporation

Rohm Co., Ltd.

Inductor

LTF5022T-3R3M

RB050LA-30

Diode

Transistor

MCH3406

Sanyo Semiconductor Co., Ltd.

TDK Corporation

C2012X5R1A106KT

C1005X7R1C104KT

Capacitor

L × W × H = 1.0 × 0.5 × 0.55 mm

10 μF, E_DC^*12= 10 V, X7R,

L × W × H = 3.2 × 1.6 × 1.6 mm

GRM31CR71A106KA Murata Manufacturing, Co., Ltd.

* 1. DCR :

DC resistance

* 2. I_MAX

* 3. V_F:

* 4. I_F:

:

Maximum allowable current

Forward voltage

Forward current

* 5. V_R:

Reverse voltage

* 6. V_DSS

* 7. V_GSS

* 8. I_D:

:

Drain-source voltage (during short-circuiting between the gate and source)

Gate-source voltage (during short-circuiting between the drain and source)

Drain current

* 9. Q_G:

Gate charge

*10. R_{DS(ON )}

:

On-resistance between the drain and source

Gate-source voltage

Rated voltage

*11. V_GS

*12. E_DC

:

Caution The values shown in the characteristics column of Table 21 above are based on the materials provided

by each manufacture. However, consider the characteristics of the original materials when using the

above products.

45

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

S-8365/8366 Series

Rev.2.1_01

2. Output Current (I_OUT) vs. Efficiency (η) Characteristics, Output Current (I_OUT) vs. Output Voltage

(V_OUT) Characteristics

Following shows the actual output current (I_OUT) vs. efficiency (η) and output current (I_OUT) vs. output voltage (V_OUT

characteristics for conditions 1 to 12 in Table 20.

)

Condition 1 S-8365AABBA (V_OUT(S)= 2.5 V)

100

90

80

70

60

50

40

30

20

10

0

2.60

2.55

2.50

2.45

2.40

2.35

2.30

2.25

2.20

2.15

2.10

2.05

2.00

V

IN = 1.8 V

V

IN = 1.8 V

0.1

1

10

100

1000 10000

0.1

1

10

100

1000 10000

I

OUT [mA]

IOUT [mA]

Condition 2 S-8365ABBBA (V_OUT(S)= 2.5 V)

100

90

2.60

2.55

2.50

2.45

2.40

2.35

2.30

2.25

2.20

2.15

2.10

2.05

2.00

80

70

60

50

40

30

20

10

0

V

IN = 1.8 V

V

IN = 1.8 V

0.1

1

10

100

1000 10000

10

100

I

OUT [mA]

I

OUT [mA]

Condition 3 S-8366AABBA (V_OUT(S)= 2.5 V)

100

90

80

2.60

2.55

2.50

2.45

2.40

2.35

2.30

2.25

2.20

2.15

2.10

2.05

2.00

70

60

50

40

30

20

10

0

V

IN = 1.8 V

VIN = 1.8 V

0.1

1

10

100

1000 10000

10

100

I

OUT [mA]

IOUT [mA]

Condition 4 S-8366ABBBA (V_OUT(S)= 2.5 V)

100

90

80

2.60

2.55

2.50

2.45

2.40

2.35

2.30

2.25

2.20

2.15

2.10

2.05

2.00

70

60

50

40

30

20

10

0

V

IN = 1.8 V

VIN = 1.8 V

0.1

1

10

100

1000 10000

10

100

I

OUT [mA]

IOUT [mA]

46

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

Rev.2.1_01

S-8365/8366 Series

Condition 5 S-8365AABBA (V_OUT(S)= 3.3 V)

100

90

80

70

60

50

40

30

20

10

0

3.5

3.4

3.3

3.2

3.1

3.0

2.9

2.8

2.7

2.6

2.5

VIN = 1.8 V

VIN = 2.4 V

VIN = 3.0 V

VIN = 1.8 V

VIN = 2.4 V

VIN = 3.0 V

0.1

1

10

100

1000 10000

0.1

1

10

100

1000 10000

I

OUT [mA]

I

OUT [mA]

Condition 6 S-8365ABBBA (V_OUT(S)= 3.3 V)

100

90

80

70

60

50

40

30

20

10

0

3.5

3.4

3.3

3.2

3.1

3.0

2.9

2.8

2.7

2.6

2.5

VIN = 1.8 V

VIN = 2.4 V

VIN = 3.0 V

V

IN = 1.8 V

IN = 2.4 V

IN = 3.0 V

0.1

1

10

100

1000 10000

10

100

I

OUT [mA]

I

OUT [mA]

Condition 7 S-8366AABBA (V_OUT(S)= 3.3 V)

100

90

3.5

3.4

3.3

3.2

3.1

3.0

2.9

2.8

2.7

2.6

2.5

80

70

VIN = 1.8 V

VIN = 2.4 V

VIN = 3.0 V

60

V

IN = 1.8 V

IN = 2.4 V

IN = 3.0 V

50

40

30

20

10

0

0.1

1

10

100

1000 10000

10

100

I

OUT [mA]

I

OUT [mA]

Condition 8 S-8366ABBBA (V_OUT(S)= 3.3 V)

100

90

80

70

60

50

40

30

20

10

0

3.5

3.4

3.3

3.2

3.1

3.0

2.9

2.8

2.7

2.6

2.5

VIN = 1.8 V

VIN = 2.4 V

VIN = 3.0 V

V

IN = 1.8 V

IN = 2.4 V

IN = 3.0 V

0.1

1

10

100

1000 10000

10

100

I

OUT [mA]

IOUT [mA]

47

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

S-8365/8366 Series

Rev.2.1_01

Condition 9 S-8365AABBA (V_OUT(S)= 5.0 V)

100

90

5.2

5.1

5.0

4.9

4.8

4.7

4.6

4.5

4.4

4.3

4.2

80

70

60

V

IN = 1.8 V

IN = 2.4 V

IN = 3.0 V

IN = 4.2 V

50

40

30

20

10

0

V

IN = 1.8 V

IN = 2.4 V

IN = 3.0 V

IN = 4.2 V

0.1

1

10

100

1000 10000

0.1

1

10

100

1000 10000

I

OUT [mA]

I

OUT [mA]

Condition 10 S-8365ABBBA (V_OUT(S)= 5.0 V)

100

90

5.2

5.1

5.0

4.9

4.8

4.7

4.6

4.5

4.4

4.3

4.2

80

70

60

V

IN = 1.8 V

IN = 2.4 V

IN = 3.0 V

IN = 4.2 V

V

IN = 1.8 V

50

40

30

20

10

0

IN = 2.4 V

IN = 3.0 V

IN = 4.2 V

0.1

1

10

100

1000 10000

10

100

1000 10000

I

OUT [mA]

I

OUT [mA]

Condition 11 S-8366AABBA (V_OUT(S)= 5.0 V)

100

90

80

70

60

50

40

30

20

10

0

5.2

5.1

5.0

4.9

4.8

4.7

4.6

4.5

4.4

4.3

4.2

V

IN = 1.8 V

V

IN = 1.8 V

IN = 2.4 V

IN = 3.0 V

IN = 4.2 V

IN = 2.4 V

IN = 3.0 V

IN = 4.2 V

0.1

1

10

100

1000 10000

10

100

I

OUT [mA]

I

OUT [mA]

Condition 12 S-8366ABBBA (V_OUT(S)= 5.0 V)

100

90

80

70

60

50

40

30

20

10

0

5.2

5.1

5.0

4.9

4.8

4.7

4.6

4.5

4.4

4.3

4.2

V

IN = 1.8 V

V

IN = 1.8 V

IN = 2.4 V

IN = 3.0 V

IN = 4.2 V

IN = 2.4 V

IN = 3.0 V

IN = 4.2 V

0.1

1

10

100

1000 10000

10

100

I

OUT [mA]

IOUT [mA]

48

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

Rev.2.1_01

S-8365/8366 Series

3. Output Current (I_OUT) vs. Ripple Voltage (V_r) Characteristics

Following shows the actual output current (I_OUT) vs. ripple voltage (V_r) characteristics for conditions of 1 to 12 in

Table 20.

Condition 1 S-8365AABBA (V_OUT(S)= 2.5 V)

Condition 2 S-8365ABBBA (V_OUT(S)= 2.5 V)

100

90

80

70

60

50

40

30

100

90

80

70

60

50

40

30

20

10

0

V

IN = 1.8 V

VIN = 1.8 V

20

10

0

0.1

1

10

100

1000 10000

0.1

1

10

100

1000 10000

I

OUT [mA]

IOUT [mA]

Condition 3 S-8366AABBA (V_OUT(S)= 2.5 V)

Condition 4 S-8366ABBBA (V_OUT(S)= 2.5 V)

100

90

80

70

60

50

40

30

20

10

0

100

90

80

70

60

50

40

30

20

10

0

V

IN = 1.8 V

V

IN = 1.8 V

0.1

1

10

100

1000 10000

0.1

1

10

100

1000 10000

I

OUT [mA]

IOUT [mA]

Condition 5 S-8365AABBA (V_OUT(S)= 3.3 V)

Condition 6 S-8365ABBBA (V_OUT(S)= 3.3 V)

100

90

100

90

80

70

60

70

60

50

40

30

20

10

0

VIN = 1.8 V

VIN = 2.4 V

VIN = 3.0 V

VIN = 1.8 V

VIN = 2.4 V

VIN = 3.0 V

50

40

30

20

10

0

0.1

1

10

100

1000 10000

0.1

1

10

100

1000 10000

I

OUT [mA]

IOUT [mA]

Condition 7 S-8366AABBA (V_OUT(S)= 3.3 V)

Condition 8 S-8366ABBBA (V_OUT(S)= 3.3 V)

100

90

100

90

80

70

60

70

VIN = 1.8 V

VIN = 2.4 V

VIN = 3.0 V

60

50

40

30

20

10

0

VIN = 1.8 V

VIN = 2.4 V

VIN = 3.0 V

50

40

30

20

10

0

0.1

1

10

100

1000 10000

0.1

1

10

100

1000 10000

I

OUT [mA]

IOUT [mA]

49

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

S-8365/8366 Series

Rev.2.1_01

Condition 9 S-8365AABBA (V_OUT(S)= 5.0 V)

Condition 10 S-8365ABBBA (V_OUT(S)= 5.0 V)

100

90

100

90

80

70

60

50

40

30

20

10

0

80

70

V

IN = 1.8 V

V

IN = 1.8 V

60

50

40

30

20

10

0

IN = 2.4 V

IN = 3.0 V

IN = 4.2 V

IN = 2.4 V

IN = 3.0 V

IN = 4.2 V

0.1

1

10

100

1000 10000

0.1

1

10

100

1000 10000

I

OUT [mA]

IOUT [mA]

Condition 11 S-8366AABBA (V_OUT(S)= 5.0 V)

Condition 12 S-8366ABBBA (V_OUT(S)= 5.0 V)

100

90

80

100

90

80

70

60

50

40

30

20

10

0

70

60

50

40

30

20

10

0

V

IN = 1.8 V

V

IN = 1.8 V

IN = 2.4 V

IN = 3.0 V

IN = 4.2 V

IN = 2.4 V

IN = 3.0 V

IN = 4.2 V

0.1

1

10

100

1000 10000

0.1

1

10

100

1000 10000

I

OUT [mA]

IOUT [mA]

50

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

Rev.2.1_01

S-8365/8366 Series

 Marking Specifications

1. SNT-6A

Top view

(1) to (3):

(4) to (6):

Product code (Refer to Product name vs. Product code)

Lot number

6

5

4

(1) (2) (3)

(4) (5) (6)

1

2

3

Product name vs. Product code

(a) S-8365 Series

(b) S-8366 Series

Product code

Product name

(1)

(2)

Q

(3)

A

C

G

I

(1)

U

(2)

Q

(3)

R

T

X

Z

S-8365AAAAA-I6T1U2

S-8365AAABA-I6T1U2

S-8365AABBA-I6T1U2

S-8365ABAAA-I6T1U2

S-8365ABABA-I6T1U2

S-8365ABBBA-I6T1U2

U

S-8366AAAAA-I6T1U2

S-8366AAABA-I6T1U2

S-8366AABBA-I6T1U2

S-8366ABAAA-I6T1U2

S-8366ABABA-I6T1U2

S-8366ABBBA-I6T1U2

K

O

U

3

7

2. SOT-23-5

Top view

5

(1) to (3):

(4):

Product code (Refer to Product name vs. Product code)

Lot number

4

(1) (2) (3) (4)

1

2

3

Product name vs. Product code

(a) S-8365 Series

(b) S-8366 Series

Product code

Product name

(1)

(2)

Q

(3)

A

C

I

(1)

U

(2)

Q

(3)

R

T

Z

3

S-8365AAAAA-M5T1y2

S-8365AAABA-M5T1y2

S-8365ABAAA-M5T1y2

S-8365ABABA-M5T1y2

U

S-8366AAAAA-M5T1y2

S-8366AAABA-M5T1y2

S-8366ABAAA-M5T1y2

S-8366ABABA-M5T1y2

Q

K

Remark 1. y: S or U

2. Please select products of environmental code = U for Sn 100%, halogen-free products.

51

STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM CONTROL or PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER

S-8365/8366 Series

Rev.2.1_01

3. SOT-23-6

Top view

(1) to (3) :

(4) :

Product code (Refer to Product name vs. Product code)

Lot number

6

5

4

(1) (2) (3) (4)

1

2

3

Product name vs. Product code

(a) S-8365 Series

(b) S-8366 Series

Product code

Product name

(1)

U

(2)

Q

(3)

G

O

(1)

U

(2)

Q

(3)

X

7

S-8365AABBA-M6T1y2

S-8365ABBBA-M6T1y2

S-8366AABBA-M6T1y2

S-8366ABBBA-M6T1y2

Remark 1. y: S or U

2. Please select products of environmental code = U for Sn 100%, halogen-free products.

52

1.57±0.03

6

5

4

+0.05

-0.02

0.08

1

2

3

0.5

0.48±0.02

0.2±0.05

No. PG006-A-P-SD-2.0

SNT-6A-A-PKG Dimensions

PG006-A-P-SD-2.0

TITLE

No.

SCALE

UNIT

mm

SII Semiconductor Corporation

+0.1

-0

ø1.5

4.0±0.1

2.0±0.05

0.25±0.05

+0.1

ø0.5

-0

4.0±0.1

0.65±0.05

1.85±0.05

5°

3

2

5

1

6

4

Feed direction

No. PG006-A-C-SD-1.0

TITLE

SNT-6A-A-Carrier Tape

PG006-A-C-SD-1.0

No.

SCALE

UNIT

mm

SII Semiconductor Corporation

12.5max.

9.0±0.3

Enlarged drawing in the central part

ø13±0.2

(60°)

No. PG006-A-R-SD-1.0

SNT-6A-A-Reel

TITLE

PG006-A-R-SD-1.0

No.

SCALE

UNIT

QTY.

5,000

SII Semiconductor Corporation

0.52

2

1.36

0.52

1

0.3

0.2

1.

2.

(0.25 mm min. / 0.30 mm typ.)

(1.30 mm ~ 1.40 mm)

0.03 mm

SNT

1. Pay attention to the land pattern width (0.25 mm min. / 0.30 mm typ.).

2. Do not widen the land pattern to the center of the package ( 1.30 mm ~ 1.40 mm ).

Caution 1. Do not do silkscreen printing and solder printing under the mold resin of the package.

2. The thickness of the solder resist on the wire pattern under the package should be 0.03 mm

or less from the land pattern surface.

3. Match the mask aperture size and aperture position with the land pattern.

4. Refer to "SNT Package User's Guide" for details.

(0.25 mm min. / 0.30 mm typ.)

(1.30 mm ~ 1.40 mm)

1.

2.

SNT-6A-A

-Land Recommendation

TITLE

No. PG006-A-L-SD-4.1

No.

PG006-A-L-SD-4.1

SCALE

UNIT

mm

SII Semiconductor Corporation

2.9±0.2

1.9±0.2

4

5

+0.1

-0.06

1

2

3

0.16

0.95±0.1

0.4±0.1

No. MP005-A-P-SD-1.2

TITLE

SOT235-A-PKG Dimensions

MP005-A-P-SD-1.2

No.

SCALE

UNIT

mm

SII Semiconductor Corporation

4.0±0.1(10 pitches:40.0±0.2)

+0.1

-0

2.0±0.05

0.25±0.1

ø1.5

+0.2

-0

4.0±0.1

ø1.0

1.4±0.2

3.2±0.2

3

4

2 1

5

Feed direction

No. MP005-A-C-SD-2.1

TITLE

SOT235-A-Carrier Tape

MP005-A-C-SD-2.1

No.

SCALE

UNIT

mm

SII Semiconductor Corporation

12.5max.

9.0±0.3

Enlarged drawing in the central part

ø13±0.2

(60°)

No. MP005-A-R-SD-1.1

TITLE

SOT235-A-Reel

MP005-A-R-SD-1.1

No.

SCALE

UNIT

QTY.

3,000

mm

SII Semiconductor Corporation

2.9±0.2

1.9±0.2

6

5

4

+0.1

-0.05

1

3

2

0.15

0.95

0.35±0.15

No. MP006-A-P-SD-2.0

SOT236-A-PKG Dimensions

MP006-A-P-SD-2.0

TITLE

No.

SCALE

UNIT

mm

SII Semiconductor Corporation

4.0±0.1(10 pitches:40.0±0.2)

+0.1

-0

2.0±0.05

0.25±0.1

ø1.5

+0.2

-0

4.0±0.1

ø1.0

1.4±0.2

3.2±0.2

3

4

2 1

6

5

Feed direction

No. MP006-A-C-SD-3.1

TITLE

SOT236-A-Carrier Tape

MP006-A-C-SD-3.1

No.

SCALE

UNIT

mm

SII Semiconductor Corporation

12.5max.

9.0±0.3

Enlarged drawing in the central part

ø13±0.2

(60°)

No. MP006-A-R-SD-2.1

SOT236-A-Reel

MP006-A-R-SD-2.1

TITLE

No.

SCALE

UNIT

3,000

QTY

mm

SII Semiconductor Corporation

Disclaimers (Handling Precautions)

1. All the information described herein (product data, specifications, figures, tables, programs, algorithms and

application circuit examples, etc.) is current as of publishing date of this document and is subject to change without

notice.

2. The circuit examples and the usages described herein are for reference only, and do not guarantee the success of

any specific mass-production design.

SII Semiconductor Corporation is not responsible for damages caused by the reasons other than the products or

infringement of third-party intellectual property rights and any other rights due to the use of the information described

herein.

3. SII Semiconductor Corporation is not responsible for damages caused by the incorrect information described herein.

4. Take care to use the products described herein within their specified ranges. Pay special attention to the absolute

maximum ratings, operation voltage range and electrical characteristics, etc.

SII Semiconductor Corporation is not responsible for damages caused by failures and/or accidents, etc. that occur

due to the use of products outside their specified ranges.

5. When using the products described herein, confirm their applications, and the laws and regulations of the region or

country where they are used and verify suitability, safety and other factors for the intended use.

6. When exporting the products described herein, comply with the Foreign Exchange and Foreign Trade Act and all

other export-related laws, and follow the required procedures.

7. The products described herein must not be used or provided (exported) for the purposes of the development of

weapons of mass destruction or military use. SII Semiconductor Corporation is not responsible for any provision

(export) to those whose purpose is to develop, manufacture, use or store nuclear, biological or chemical weapons,

missiles, or other military use.

8. The products described herein are not designed to be used as part of any device or equipment that may affect the

human body, human life, or assets (such as medical equipment, disaster prevention systems, security systems,

combustion control systems, infrastructure control systems, vehicle equipment, traffic systems, in-vehicle equipment,

aviation equipment, aerospace equipment, and nuclear-related equipment), excluding when specified for in-vehicle

use or other uses. Do not use those products without the prior written permission of SII Semiconductor Corporation.

Especially, the products described herein cannot be used for life support devices, devices implanted in the human

body and devices that directly affect human life, etc.

Prior consultation with our sales office is required when considering the above uses.

SII Semiconductor Corporation is not responsible for damages caused by unauthorized or unspecified use of our

products.

9. Semiconductor products may fail or malfunction with some probability.

The user of these products should therefore take responsibility to give thorough consideration to safety design

including redundancy, fire spread prevention measures, and malfunction prevention to prevent accidents causing

injury or death, fires and social damage, etc. that may ensue from the products' failure or malfunction.

The entire system must be sufficiently evaluated and applied on customer's own responsibility.

10. The products described herein are not designed to be radiation-proof. The necessary radiation measures should be

taken in the product design by the customer depending on the intended use.

11. The products described herein do not affect human health under normal use. However, they contain chemical

substances and heavy metals and should therefore not be put in the mouth. The fracture surfaces of wafers and chips

may be sharp. Take care when handling these with the bare hands to prevent injuries, etc.

12. When disposing of the products described herein, comply with the laws and ordinances of the country or region where

they are used.

13. The information described herein contains copyright information and know-how of SII Semiconductor Corporation.

The information described herein does not convey any license under any intellectual property rights or any other

rights belonging to SII Semiconductor Corporation or a third party. Reproduction or copying of the information

described herein for the purpose of disclosing it to a third-party without the express permission of SII Semiconductor

Corporation is strictly prohibited.

14. For more details on the information described herein, contact our sales office.

1.0-2016.01

www.sii-ic.com


型号：	S-8365AAAA-M6T1S2
厂家：	SEIKO INSTRUMENTS INC
描述：	PWM/PFM SWITCHABLE SWITCHING REGULATOR CONTROLLER 开关
文件：	总63页 (文件大小：3716K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

S-8365AAAA-M6T1S2 [SII]

相关型号：

S-8365AAAA-M6T1U2

S-8365AAAAA-I6T1U2

S-8365AAAAA-I6T1U2

S-8365AAAAA-M5T1S2

S-8365AAAAA-M5T1U2

S-8365AAAAA-M5T1Y2

S-8365AAAAA-M6T1S2

S-8365AAAAA-M6T1U2

S-8365AAAAB-I6T1U2

S-8365AAAAB-M5T1S2

S-8365AAAAB-M5T1U2

S-8365AAAAB-M6T1S2