XC9268B75CER-G_技术文档

XC9268Series

36V Operation 600mA Synchronous Step-Down DC/DC Converters

ETR05071-001a

■GENERAL DESCRIPTION

The XC9268 series are 36V operation synchronous step-down DC/DC converter ICs with a built-in P-channel MOS driver transistor

and N-channel MOS switching transistor. The XC9268 series has operating voltage range of 3.0V~36.0V and high-efficiency power

supply up to an output current of 600mA. Low ESR capacitors such as ceramic capacitors can be used for the load capacitor (C_L).

A 0.75V reference voltage source is incorporated in the IC, and the output voltage can be set to a value from 1.0V to 25.0V using

external resistors (R_FB1, R_FB2).

1.2MHz or 2.2MHz can be selected for the switching frequency. In automatic PWM/PFM control, the IC operates by PFM control

when the load is light to achieve high efficiency over the full load range from light to heavy.

The soft-start time is internally set to 2.0ms (TYP.), but can be adjusted to set a longer time using an external resistor and capacitor.

With the built-in UVLO function, the driver transistor is forced OFF when input voltage becomes 2.7V or lower.

The output state can be monitored using the power good function.

Internal protection circuits include over current protection and thermal shutdown circuits to enable safe use.

■FEATURES

Input Voltage Range

Output Voltage Range

FB Voltage

■APPLICATIONS

● Electric Meter

:

3.0 ~ 36V (Absolute Max 40V

1.0 ~ 25V

● Gas Detector

0.75V ± 1.5%

● Various Sensor

Oscillation Frequency

Output Current

1.2MHz, 2.2MHz

● Industrial Equipment

● Home appliance

600mA

Quiescent Current

12.5μA (1.2MHz)

13.5μA (2.2MHz)

Control Methods

PWM/PFM Auto

Efficiency 83%@12V→5V、1mA

Adjustable by RC

Soft-start Time

Protection Circuits

Over Current Protection

Thermal Shutdown

Ceramic Capacitor

- 40℃ ~ + 105℃

Output Capacitor

Operating Ambient Temperature

Packages

SOT-89-5 (Without Power Good)

USP-6C (With Power Good)

EU RoHS Compliant, Pb Free

Environmentally Friendly

■TYPICAL APPLICATION CIRCUIT ■TYPICAL PERFORMANCE

CHARACTERISTICS

L

V_IN

Lx

C_IN

R_FB1

2.2μF

C_FB

EN/SS

FB

C_L

R_FB2

10μF×2

R_PG

GND

PG

1/30

XC9268 Series

■BLOCK DIAGRAM

XC9268 Series

V_IN

Current

SENSE

LocalReg

Chip

Enable

EN/SS

each

Current

feed

back

Current

Limit

PFM

circuit

Current

Limit

High

Side

Buffer

Gate

CLAMP

Under

Voltage

Lx

Low

Side

Lock Out

Buffer

Thermal

Shutdown

each

circuit

Operation

Enable

Vref

Soft Start

+

Err Amp

-

+

PWM

PWM/PFM

ControlLOGIC

FB

Comparator

-

GND

Ramp

Wave

OSC

PG

(USP-6C Package Only)

+

-

PowerGood

Comparator

*Diodes inside the circuit are an ESD protection diodes and a parasitic diodes.

2/30

XC9268

Series

■PRODUCT CLASSIFICATION

● Ordering Information

(*1)

XC9268①②③④⑤⑥-⑦

PWM/PFM Auto

ITEM

DESIGNATOR

SYMBOL

DESCRIPTION

Refer to Selection Guide

①

Type

B

75

②③

FB Voltage

0.75V

C

1.2MHz

④

Oscillation Frequency

Packages

D

2.2MHz

PR-G^(*1)

ER-G^(*1)

SOT-89-5 (1000pcs/Reel)

USP-6C (3000pcs/Reel)

⑤⑥-⑦

^(*1)The “-G” suffix denotes Halogen and Antimony free as well as being fully EU RoHS compliant.

● Selection Guide

B TYPE

FUNCTION

SOT-89-5

USP-6C

Chip Enable

UVLO

Yes

-

Yes

Thermal Shutdown

Soft Start

Power-Good

Current Limitter

Yes

(Automatic Recovery)

3/30

XC9268 Series

■PIN CONFIGURATION

V_IN

EN/SS

4

5

2

1

2

3

Lx

V_IN

EN/SS 5

PG

6

GND

FB

4

1

2

3

Lx

GND

FB

SOT-89-5

(TOP VIEW)

USP-6C

(BOTTOM VIEW)

* The dissipation pad for the USP-6C package should be solder-plated in recommended mount pattern and metal masking so as

to enhance mounting strength and heat release. If the pad needs to be connected to other pins, it should be connected to the

GND (No. 2) pin.

■PIN ASSIGNMENT

PIN NUMBER

PIN NAME

FUNCTION

SOT-89-5

USP-6C

1

2

3

-

1

2

3

4

5

6

Lx

GND

FB

Switching Output

Ground

Output Voltage Sense

Power-good Output

Enable Soft-start

Power Input

PG

4

5

EN/SS

V_IN

4/30

XC9268

Series

■FUNCTION CHART

PIN NAME

SIGNAL

STATUS

Stand-by

L

H

EN/SS

Active

OPEN

Undefined State^(*1)

^(*1)Please do not leave the EN/SS pin open. Each should have a certain voltage

PIN NAME

PG

CONDITION

SIGNAL

V_FB> V_PGDET

H (High impedance)

L (Low impedance)

V_FB≦ V_PGDET

EN/SS = H

EN/SS = L

Thermal Shutdown

UVLO

Undefined State

(V_IN< V_UVLO1

Stand-by

)

L (Low impedance)

■ABSOLUTE MAXIMUM RATINGS

Ta=25℃

PARAMETER

V_INPin Voltage

EN/SS Pin Voltage

FB Pin Voltage

PG Pin Voltage^(*1)

PG Pin Current^(*1)

Lx Pin Voltage

SYMBOL

V_IN

RATINGS

-0.3 ~ +40

-0.3 ~ +6.2

8

UNITS

V

V_EN/SS

V_FB

V

V_PG

V

I_PG

mA

V

V_Lx

-0.3 ~ V_IN+ 0.3 or +40 ^(*2)

Lx Pin Current

I_Lx

1800

mA

SOT-89-5

1750 (JESD51-7 board) ^(*4)

1250 (JESD51-7 board) ^(*4)

+46^(*3)

Power

Dissipation

Pd

mW

USP-6C(DAF)

Surge Voltage

V_SURGE

Topr

V

Operating Ambient Temperature

Storage Temperature

-40 ~ +105

℃

Tstg

-55 ~ +125

* All voltages are described based on the GND pin.

^(*1)For the USP-6C Package only.

^(*2)The maximum value should be either V_IN+0.3 or 40 in the lowest.

^(*3)Applied Time≦400ms

^(*4)The power dissipation figure shown is PCB mounted and is for reference only.

The mounting condition is please refer to PACKAGING INFORMATION.

5/30

XC9268 Series

■ELECTRICAL CHARACTERISTICS

XC9268 Series

Ta=25℃

CIRCUIT

PARAMETER

SYMBOL

V_FBE

CONDITIONS

V_FB=0.739V→0.761V,

_FBVoltage when Lx pin voltage changes

MIN.

TYP.

MAX.

UNIT

FB Voltage

V

0.739 0.750 0.761

V

②

from "H" level to "L" level

Setting Output

Voltage Range ^(*1)

V_OUTSET

V_IN

-

1

3

-

25

36

V

-

Operating Input

Voltage Range ^(*1)

-

V_EN/SS=12V,V_IN:2.8V→2.6V,V_FB=0V

UVLO Detect Voltage

UVLO Release Voltage

V_UVLOD

V

_INVoltage which Lx pin voltage holding

"H" level

_EN/SS=12V,V_IN:2.7V→2.9V,V_FB=0V

2.6

2.7

2.8

2.9

V

②

V

V_UVLOR

V_INVoltage which Lx pin voltage holding

"L" level

XC9268B75C

V_FB=0.825V

-

12.5

13.5

1.65

21.0

22.0

2.50

Quiescent Current

Stand-by Current

I_q

μA

④

XC9268B75D

I_STBY

V_IN=12V, V_EN/SS=V_FB=0V

XC9268B75C 1.098 1.200 1.302

XC9268B75D 2.013 2.200 2.387

Connected to external

components,

Oscillation Frequency

f_OSC

MHz

①

I_OUT=200mA

Minimum On Time

Minimum Duty Cycle

Maximum Duty Cycle

Lx SW "H" On

t_ONMIN

D_MIN

Connected to external components

V_FB=0.825V

-

85 ^(*2)

-

0

-

ns

%

①

②

-

D_MAX

V_FB=0.675V

100

R_LxH

R_LxL

V_FB=0.675V, I_Lx=200mA

-

1.20

1.38

-

Ω

⑤

Resistance

Lx SW "L" On

0.60

(*2)

Resistance

High side Current Limit

I_LIMH

t_SS1

t_SS2

V_FB=V_FBE×0.98

V_FB=0.675V

1.00

1.6

21

1.30

2.0

26

-

A

⑤

②

③

(*3)

Internal Soft-Start Time

2.4

33

ms

External Soft-Start

Time

V_FB=0.675V

R_SS=430KΩ, C_SS=0.47μF

Connected to external components,

PFM Switch Current

IPFM

EFFI

-

400

83

-

①

mA

%

V_IN=V_EN/SS=12V、I_OUT=1mA

Connected to external

XC9268B75C

XC9268B75D

components,

V_IN=12V, V_OUT=5V,

I_OUT=1mA

Efficiency ^(*5)

80

%

ΔV_FB

(ΔT_opr

V_FBE

/

FB Voltage

Temperature

Characteristics

・

-40℃≦T_opr≦105℃

-

±100

-

ppm/℃

②

)

Test Condition: Unless otherwise stated, V_IN=12V, V_EN/SS=12V

Peripheral parts connection conditions：L=6.8μH、R_FB1=680kΩ、R_FB2=120kΩ、C_L=10μF×2、C_IN=2.2μF

^(*1)Please use within the range of V_OUT/V_IN≧t_ONMIN[ns]×f_OSC[MHz]×10^-3

^(*2)Design reference value. This parameter is provided only for reference.

^(*3)Current limit denotes the level of detection at peak of coil current.

^(*4)For the USP-6C Package only.

6/30

XC9268

Series

■ELECTRICAL CHARACTERISTICS

XC9268 Series

Ta=25℃

CIRCUIT

PARAMETER

SYMBOL

CONDITIONS

MIN.

TYP.

MAX.

UNIT

V

V_FB=0.712V→0.638V, R_PG:100kΩ pull-up to

5V

PG detect voltage ^(*4)

V_PGDET

0.638 0.675 0.712

⑤

V_FBVoltage when PG pin voltage changes

from"H" level to "L" level

PG Output voltage ^(*4)

FB "H" Current

V_PG

I_FBH

I_FBL

V_FB=0.6V, I_PG=1mA

-

0.3

0.1

V

②

④

V_IN=V_EN/SS=36V, V_FB=3.0V

V_IN=V_EN/SS=36V, V_FB=0V

-0.1

μA

FB "L" Current

V_EN/SS=0.3V→2.5V, V_FB=0.71V

V_EN/SSVoltage when Lx pin voltage

changes from "L" level to "H" level

EN/SS "H" Voltage

EN/SS "L" Voltage

V_EN/SSH

2.5

-

36

V

②

V_EN/SS=2.5V→0.3V, V_FB=0.71V

V_EN/SSVoltage when Lx pin voltage

changes from "H" level to "L" level

V_EN/SSL

0.3

EN/SS "H" Current

EN/SS "L" Current

I_EN/SSH

I_EN/SSL

V_IN=V_EN/SS=36V, V_FB=0.825V

-

0.1

-

0.3

0.1

μA

④

V_IN=36V, V_EN/SS=0V, V_FB=0.825V

-0.1

Thermal Shutdown

Temperature

T_TSD

T_HYS

Junction Temperature

-

150

25

-

℃

-

Hysteresis Width

Test Condition: Unless otherwise stated, V_IN=12V, V_EN/SS=12V

Peripheral parts connection conditions：L=6.8μH、R_FB1=680kΩ、R_FB2=120kΩ、C_L=10μF×2、C_IN=2.2μF

^(*4)For the USP-6C Package only.

7/30

XC9268 Series

■TEST CIRCUITS

CIRCUIT①

V

IN

A

Probe

EN/SS

PG

L

V

O UT

2.2μF

Lx

A

V

C

FB

R

FB1

FB

V

FB2

10μF×２

GND

CIRCUIT②

Probe

V

IN

V

Probe

EN/SS

2.2μF

Lx

1 00 kΩ

V

PG

FB

V

A

V

1 00 kΩ

GND

V

Probe

CIRCUIT③

Probe

V

IN

4 30 kΩ

Probe

EN/SS

Lx

2.2μF

V

PG

0.47μF

FB

V

GND

1 00 kΩ

V

* PG Pin is USP-6C Package only.

8/30

XC9268

Series

■TEST CIRCUITS

CIRCUIT④

V

IN

A

EN/SS

PG

A

Lx

V

FB

A

GND

V

CIRCUIT⑤

Probe

V_IN

V

Probe

EN/SS

C_IN

Lx

R_PG=100kΩ

V

PG

FB

V

GND

V

Probe

* PG Pin is USP-6C Package only.

9/30

XC9268 Series

■TYPICAL APPLICATION CIRCUIT

L

V_IN

Lx

C_IN

R_FB1

C_FB

EN/SS

FB

C_L

R_FB2

R_PG

GND

PG

＜Inductance value setting＞

For the XC9268 Series, operation is optimized by setting the following inductance value according to the set frequency and

setting output voltage.

f_OSCSET: Frequency setting , V_OUTSET: Output voltage setting

【Typical Examples】

f_OSCSET

conditions

MANUFACTURER

TDK

PRODUCT NUMBER

CLF5030NIT-3R3N

XEL4030-332ME

VALUE

Coilcraft

1V＜V_OUTSET≦2V

3.3μH

Taiyo Yuden

Tokyo Coil

TDK

NRS4018T3R3MDGJ

SHP0420P-F3R3NAP

CLF5030NIT-4R7N

XEL4030-472ME

Coilcraft

2V＜V_OUTSET≦3.3V

4.7μH

Taiyo Yuden

Tokyo Coil

TDK

NRS5024T4R7MMGJ

SHP0530P-F4R7AP

CLF5030NIT-6R8N

XEL4030-682ME

1.2MHz

Coilcraft

3.3V＜V_OUTSET≦6V

6.8μH

10μH

Taiyo Yuden

Tokyo Coil

TDK

NRS5024T6R8MMGJ

SHP0530P-F6R8AP

CLF5030NIT-100N

NRS5040T100MMGJ

6V＜V_OUTSET≦25V

Taiyo Yuden

Tokyo Coil

TDK

SHP0530P-F100AP

CLF5030NIT-1R5N

L

Coilcraft

Taiyo Yuden

Tokyo Coil

TDK

XEL4030-152ME

1.5μH

1.6μH

1V＜V_OUTSET≦2V

NRS4018T1R5NDGJ

SHP0420P-F1R6NAP

CLF5030NIT-2R2N

Coilcraft

Taiyo Yuden

Tokyo Coil

TDK

XEL4030-222ME

2V＜V_OUTSET≦3.3V

3.3V＜V_OUTSET≦6V

6V＜V_OUTSET≦25V

2.2μH

3.3μH

4.7μH

NRS4018T2R2MDGJ

SHP0420P-F2R2NAP

CLF5030NIT-3R3N

2.2MHz

Coilcraft

Taiyo Yuden

Tokyo Coil

TDK

XEL4030-332ME

NRS4018T3R3MDGJ

SHP0420P-F3R3NAP

CLF5030NIT-4R7N

Coilcraft

Taiyo Yuden

Tokyo Coil

TDK

XEL4030-472ME

NRS5024T4R7MMGJ

SHP0530P-F4R7AP

C2012X6S1H475K125AC

C2012X7R1H225K125AC

C2012X7R1A106K125AC

C3216X7R1E106K160AB

C3225X7R1H106M250AC

V_IN＜20V

V_IN≧20V

V_IN＜20V

V_IN≧20V

4.7μF/50V

1.2MHz

2.2MHz

TDK

4.7μF/50V 2parallel

2.2μF/50V

C_IN

TDK

2.2μF/50V 2parallel

10μF/10V 2parallel

10μF/25V 2parallel

10μF/50V 2parallel

C_L

-

TDK

10/30

XC9268

Series

■TYPICAL APPLICATION CIRCUIT(Continued)

< Output voltage setting >

The output voltage can be set by adding an external dividing resistor.

The output voltage is determined by the equation below based on the values of R_FB1and R_FB2

.

V_OUT=0.75V × (R_FB1+R_FB2)/R_FB2

With R_FB2≦200kΩ and R_FB1+R_FB2≦1MΩ

<C_FBsetting>

Adjust the value of the phase compensation speed-up capacitor C_FBusing the equation below.

1

C_FB

=

2π × fzfb× R_FB1

1

A target value for fzfb of about fzfb =

【Setting Example】

is optimum.

2π C_L× L

To set output voltage to 5V with fosc=1.2MHz, C_L=10μF×2, L=6.8μH

When R_FB1=680kΩ, R_FB2=120kΩ, V_OUTSET=0.75V× (680kΩ+120kΩ) / 120kΩ=5.0V

And fzfb is set to a target of 13.65 kHz using the above equation,

C_FB=1/ (2×π×13.65 kHz×680kΩ) =17.15pF. A capacitor of E24 series is 18pF.

XC9268B75Cxx / f_OSC=1.2MHz

R_FB1R_FB2C_FB

XC9268B75Dxx / f_OSC=2.2MHz

R_FB1R_FB2C_FB

V_OUTSET

1.2V

3.3V

5.0V

12V

L

fzfb

V_OUTSET

1.2V

3.3V

5.0V

12V

L

fzfb

120kΩ 200kΩ 3.3μH 68pF 19.6kHz

510kΩ 150kΩ 4.7μH 18pF 16.4kHz

680kΩ 120kΩ 6.8μH 18pF 13.7kHz

120kΩ 200kΩ 1.5μH 47pF 29.1kHz

510kΩ 150kΩ 2.2μH 12pF 24.0kHz

680kΩ 120kΩ 3.3μH 12pF 19.6kHz

360kΩ

24kΩ 10μH 39pF 11.3kHz

360kΩ

24kΩ 4.7μH 27pF 16.4kHz

<Soft-start Time Setting>

The soft-start time can be adjusted by adding a capacitor and a resistor to the EN/SS pin.

Soft-start time (t_SS2) is approximated by the equation below according to values of V_EN/SS, R_SS, and C_SS

.

t_ss2=C_ssx R_ssx ln ( V_EN/SS/ (V_EN/SS-1.45) )

【Setting Example】

When C_SS=0.47μF, R_SS=430kΩ and V_EN/SS=12V, t_SS2=0.47x10^-6x 430 x 10³x (ln (12/ (12-1.45)) =26ms (Approx.)

*The soft-start time is the time from the start of V_EN/SSuntil the output voltage reaches 90% of the set voltage.

If the EN/SS pin voltage rises steeply without connecting C_SSand R_SS(R_SS=0Ω), Output rises with taking the soft-start time of

t_SS1=2.0ms (TYP.) which is fixed internally.

R_SS

V_EN/SS

EN/SS

C_SS

V_EN/SS

90 % of setting voltage

V

OUT

t_SS1

tSS2

11/30

XC9268 Series

■OPERATIONAL EXPLANATION

The XC9268 series consists internally of a reference voltage supply with soft-start function, error amp, PWM comparator, ramp

wave circuit, oscillator circuit, Current limiting PFM circuit, phase compensation (Current feedback) circuit, current limiting circuit,

High-side driver Tr., Low-side driver Tr., buffer drive circuit, internal power supply (Local Reg) circuit, under-voltage lockout

(UVLO) circuit, gate clamp (CLAMP) circuit, thermal shutdown (TSD) circuit, power good comparator, PWM/PFM control block

and other elements.

The voltage feedback from the FB pin is compared to the internal reference voltage by the error amp, the output from the error

amp is phase compensated, and the signal is input to the PWM comparator to determine the ON time of switching during PWM

operation. The output signal from the error amp is compared to the ramp wave by the PWM comparator, and the output is sent

to the buffer drive circuit and output from the LX pin as the duty width of switching. This operation is performed continuously to

stabilize the output voltage.

The driver transistor current is monitored at each switching by the phase compensation (Current feedback) circuit, and the

output signal from the error amp is modulated as a multi-feedback signal. This allows a stable feedback system to be obtained

even when a low ESR capacitor such as a ceramic capacitor is used, and this stabilizes the output voltage.

XC9268 Series

V_IN

Current

SENSE

LocalReg

Chip

Enable

EN/SS

each

Current

feed

back

Current

Limit

PFM

circuit

Current

Limit

High

Side

Buffer

Gate

CLAMP

Under

Voltage

Lx

Low

Side

Lock Out

Buffer

Thermal

Shutdown

each

circuit

Operation

Enable

Vref

Soft Start

+

Err Amp

-

+

PWM

PWM/PFM

ControlLOGIC

FB

Comparator

-

GND

Ramp

Wave

OSC

PG

(USP-6C Package Only)

+

-

PowerGood

Comparator

* Diodes inside the circuits are ESD protection diodes and parasitic diodes.

The reference voltage source provides the reference voltage to ensure stable output voltage of the DC/DC converter.

The oscillator circuit determines switching frequency.1.2MHz or 2.2MHz is available for the switching frequency.

Clock pulses generated in this circuit are used to produce ramp waveforms needed for PWM operation.

The error amplifier is designed to monitor output voltage. The amplifier compares the reference voltage with the feedback

voltage divided by the internal voltage divider, R_FB1and R_FB2. When a voltage is lower than the reference voltage, then the

voltage is fed back, the output voltage of the error amplifier increases. The error amplifier output is fixed internally to deliver an

optimized signal to the mixer.

12/30

XC9268

Series

■OPERATIONAL EXPLANATION(Continued)

The current limiting circuit of the XC9268 series monitors the current that flows through the High-side driver transistor and

Low-side driver transistor, and when over-current is detected, the current limiting function activates.

(1) High-side driver Tr. current limiting

The current in the High-side driver Tr. is detected to equivalently monitor the peak value of the coil current. The High-side driver

Tr. current limiting function forcibly turns off the High-side driver Tr. when the peak value of the coil current reaches the High-

side driver current limit value I_LIMH

.

High-side driver Tr. current limit value I_LIMH=1.3A (TYP.)

(2) Low-side driver Tr. current limiting

The current in the Low-side driver Tr. is detected to equivalently monitor the bottom value of the coil current. The Low-side

driver Tr. current limiting function operates when the High-side driver Tr. current limiting value reaches I_LIMH. The Low-side driver

Tr. current limiting function prohibits the High-side driver Tr. from turning on in an over-current state where the bottom value of

the coil current is higher than the Low-side driver Tr. current limit value I_LIML

.

Low side driver Tr. current limit value I_LIML=0.9A (TYP.)

The current foldback circuit operates control to lower the switching frequency f_OSC. When the over-current state is released,

normal operation resumes.

Current Limit

I_LIMH=1.3A(TYP.)

I_LIML=0.9A(TYP.)

I_LX

0A

V_LX

V_OUT

0V

13/30

XC9268 Series

■OPERATIONAL EXPLANATION(Continued)

<Soft-start function>

The output voltage of XC9268 rises with soft start by slowly raising the reference voltage. The rise time of this reference

voltage is the soft start time. The soft-start time is set to t_ss1(TYP. 2.0ms) which is fixed internally or to the time set by adding a

capacitor and a resistor to the EN / SS pin whichever is later.

The thermal shutdown (TSD) as an over temperature limit is built in the XC9268 series.

When the junction temperature reaches the detection temperature, the driver transistor is forcibly turned off. When the junction

temperature falls to the release temperature while in the output stop state, restart takes place by soft-start.

<UVLO>

When the V_INpin voltage falls below V_UVLO1(TYP. 2.7V), the driver transistor is forcibly turned off to prevent false pulse output

due to instable operation of the internal circuits. When the V_INpin voltage rises above V_UVLO2(TYP. 2.8V), the UVLO function is

released, the soft-start function activates, and output start operation begins. Stopping by UVLO is not shutdown; only pulse

output is stopped and the internal circuits continue to operate.

On USP-6C Package, the output state can be monitored using the power good function. The PG pin is an Nch open drain

output, therefore a pull-up resistance (approx. 100kΩ) must be connected to the PG pin.

CONDITIONS

SIGNAL

V

_FB＞V_PGDET

_FB≦V_PGDET

H (High impedance)

L (Low impedance)

Undefined State

V

EN/SS=H

EN/SS=L

Thermal Shutdown

UVLO（V_IN<V_UVLOD

)

Stand-by

L (Low impedance)

14/30

XC9268

Series

■NOTE ON USE

1) In the case of a temporary and transient voltage drop or voltage rise.

If the absolute maximum ratings are exceeded, the IC may be deteriorate or destroyed.

Case 1

If a voltage exceeding the absolute maximum voltage is applied to the IC due to chattering caused by a mechanical switch or an

external surge voltage, please use a protection element such as TVS and a protection circuit as a countermeasure.

L

V_IN

Lx

C_IN

R_FB1

C_FB

EN/SS

FB

C_L

TVS

R_FB2

R_PG

GND

PG

Case 2

Under conditions where the input voltage drops below the output voltage, overcurrent may flow to the parasitic diode inside the

IC, and the absolute maximum rating of the Lx pin may be exceeded. If current is drawn to the input side with low impedance

between Vin and GND, please take measures such as adding an SBD between V_OUTand V_IN.

SBD

L

V_OUT

V_IN

Lx

C_IN

R_FB1

C_FB

EN/SS

FB

C_L

R_FB2

R_PG

GND

PG

2) Make sure that the absolute maximum ratings of the external components and of this IC are not exceeded.

3) The DC/DC converter characteristics depend greatly on the externally connected components as well as on the characteristics

of this IC, so refer to the specifications and standard circuit examples of each component when carefully considering which

components to select.

Be especially careful of the capacitor characteristics and use X7R or X5R (EIA standard) ceramic capacitors.

The capacitance decrease caused by the bias voltage may become remarkable depending on the external size of the

capacitor.

15/30

XC9268 Series

■NOTE ON USE(Continued)

4) The DC/DC converter of this IC uses a current-limiting circuit to monitor the coil peak current. If the potential dropout voltage

is large or the load current is large, the peak current will increase, which makes it easier for current limitation to be applied

which in turn could cause the operation to become unstable. When the peak current becomes large, adjust the coil inductance

and sufficiently check the operation.

The following formula is used to show the peak current.

Peak Current: Ipk = (V_IN– V_OUT) × V_OUT/ V_IN/ (2 × L × f_OSC) + I_OUT

L: Coil Inductance [H]

f_OSC: Oscillation Frequency [Hz]

I_OUT: Load Current [A]

5) If there is a large dropout voltage, a circuit delay could create the ramp-up of coil current with staircase waveform exceeding

the current limit.

6) Even in the PWM control, the intermittent operation occurs and the ripple voltage becomes higher, when the minimum On

Time is faster than 85ns (TYP.) as well as the dropout voltage is large.

7） The ripple voltage could be increased when switching from discontinuous conduction mode to continuous conduction mode

and at switching to 100% Duty cycle. Please evaluate IC well on customer’s PCB.

8) PWM/PFM auto series may cause superimposed ripple voltage by continuous pulses if it uses in high temperature and no

load. It is necessary to set an idle current of higher than 100 μA from V_OUTif it uses at no load.

It can make an effect as same as RFB2 is lower than 7.5 kΩ, Please refer to the < Output voltage setting > in the TYPCAL

APPLICATION CIRCUIT..

9) If the voltage at the EN/SS Pin does not start from 0V but it is at the midpoint potential when the power is switched on, the

soft start function may not work properly and it may cause the larger inrush current and bigger ripple voltages.

10) Torex places an importance on improving our products and their reliability. We request that users incorporate fail-safe designs

and post-aging protection treatment when using Torex products in their systems.

11) Instructions of pattern layouts

The operation may become unstable due to noise and/or phase lag from the output current when the wire impedance is

high, please place the input capacitor(C_IN) and the output capacitor (C_L) as close to the IC as possible.

(1) In order to stabilize V_INvoltage level, we recommend that a by-pass capacitor (C_IN) be connected as close as possible

to the V_INand GND pins.

(2) Please mount each external component as close to the IC as possible.

(3) Wire external components as close to the IC as possible and use thick, short connecting traces to reduce the circuit

impedance.

(4) Make sure that the GND traces are as thick as possible, as variations in ground potential caused

by high ground currents at the time of switching may result in instability of the IC.

(5) Please note that internal driver transistors bring on heat because of the load current and ON resistance

of High side driver transistor, Low side driver transistor. Please make sure that the heat is dissipated properly,

especially at higher temperatures.

16/30

XC9268

Series

USP-6C

Layer 1

Layer 2

Layer 4

Layer 3

SOT-89-5

Layer 1

Layer 2

Layer 3

Layer 4

17/30

XC9268 Series

■TYPICAL PERFORMANCE CHARACTERISTICS

(1) Efficiency vs. Output Current

XC9268B75Cxx

(V_IN=12V, V_OUT=3.3V, f_OSC=1.2MHz)

(V_IN=12V, V_OUT=5V, f_OSC=1.2MHz)

L=4.7μH(CLF5030NIT-4R7), C_IN=4.7μF×2(C2012X6S1H475K)

C_L=10μF×2 (C3216X7R1E106K)

L=6.8μH(CLF5030NIT-6R8), C_IN=4.7μF×2(C2012X6S1H475K)

C_L=10μF×2 (C3216X7R1E106K)

100

90

80

70

60

50

40

30

20

10

0

90

80

70

60

50

40

30

20

10

0

0.1

1

10

100

1000

0.1

1

10

100

1000

Output Current :I_OUT[mA]

XC9268B75Dxx

(V_IN=12V, V_OUT=5V, f_OSC=2.2MHz)

(V_IN=12V, V_OUT=3.3V, ｆ_OSC=2.2MHz)

L=2.2μH(CLF5030NIT-2R2), C_IN=2.2μF×2(C2012X7R1H225K)

C_L=10μF×2 (C3216X7R1E106K)

L=3.3μH(CLF5030NIT-3R3), C_IN=2.2μF×2(C2012X7R1H225K)

C_L=10μF×2 (C3216X7R1E106K)

100

90

80

70

60

50

40

30

20

10

0

90

80

70

60

50

40

30

20

10

0

0.1

1

10

100

1000

0.1

1

10

100

1000

Output Current :I_OUT[mA]

(2) Output Voltage vs. Output Current

XC9268B75Cxx

(V_IN=12V, V_OUT=5V, f_OSC=1.2MHz)

(V_IN=12V, V_OUT=3.3V, f_OSC=1.2MHz)

L=6.8μH(CLF5030NIT-6R8), C_IN=4.7μF×2(C2012X6S1H475K)

C_L=10μF×2 (C3216X7R1E106K)

6.00

L=4.7μH(CLF5030NIT-4R7), C_IN=4.7μF×2(C2012X6S1H475K)

C_L=10μF×2 (C3216X7R1E106K)

4.30

4.10

3.90

3.70

3.50

3.30

3.10

2.90

2.70

2.50

2.30

5.80

5.60

5.40

5.20

5.00

4.80

4.60

4.40

4.20

4.00

1

10

100

1000

1

10

100

1000

Output Current :I_OUT[mA]

18/30

XC9268

Series

■TYPICAL PERFORMANCE CHARACTERISTICS(Continued)

(2) Output Voltage vs. Output Current

XC9268B75Dxx

(V_IN=12V, V_OUT=3.3V, f_OSC=2.2MHz)

(V_IN=12V, V_OUT=5V, f_OSC=2.2MHz)

L=2.2μH(CLF5030NIT-2R2), C_IN=2.2μF×2(C2012X7R1H225K)

C_L=10μF×2 (C3216X7R1E106K)

L=3.3μH(CLF5030NIT-3R3), C_IN=2.2μF×2(C2012X7R1H225K)

C_L=10μF×2 (C3216X7R1E106K)

4.30

6.00

4.10

3.90

3.70

3.50

3.30

3.10

2.90

2.70

2.50

2.30

5.80

5.60

5.40

5.20

5.00

4.80

4.60

4.40

4.20

4.00

1

10

100

1000

1

10

100

1000

Output Current :I_OUT[mA]

(3) Ripple Voltage vs. Output Current

XC9268B75Cxx

XC9268B75Dxx

(V_IN=12V, V_OUT=5V, f_OSC=1.2MHz)

(V_IN=12V, V_OUT=5V, f_OSC=2.2MHz)

L=6.8μH(CLF5030NIT-6R8), C_IN=4.7μF×2(C2012X6S1H475K)

C_L=10μF×2 (C3216X7R1E106K)

L=3.3μH(CLF5030NIT-3R3), C_IN=2.2μF×2(C2012X7R1H225K)

C_L=10μF×2 (C3216X7R1E106K)

100

90

80

70

60

50

40

30

20

10

0

90

80

70

60

50

40

30

20

10

0

0.1

1

10

100

1000

0.1

1

10

100

1000

Output Current :I_OUT[mA]

(4) FB Voltage vs. Ambient Temperature

XC9268B75xxx

(5) UVLO Voltage vs. Ambient Temperature

XC9268B75xxx

V_IN=12V

0.760

0.755

0.750

0.745

0.740

3.0

VUVLO1(DetectVoltage)

2.9

VUVLO2(ReleaseVoltage)

2.8

2.7

2.6

2.5

-50 -25

0

25

50

75 100 125

-50 -25

0

25

50

75 100 125

Ambient Temperature :Ta[℃]

19/30

XC9268 Series

■TYPICAL PERFORMANCE CHARACTERISTICS(Continued)

(6) Oscillation Frequency vs. Ambient Temperature

XC9268B75Cxx

(f_OSC=1.2MHz)

XC9268B75Dxx

(f_OSC=2.2MHz)

V_IN=12V

2650

2500

2350

2200

2050

1900

1750

1440

1360

1280

1200

1120

1040

960

-50 -25

0

25

50

75 100 125

-50 -25

0

25

50

75 100 125

Ambient Temperature :Ta[℃]

(7) Stand-by Current vs. Ambient Temperature

XC9268B75xxx

(8) Lx SW ON Resistance vs. Ambient Temperature

XC9268B75xxx

V_IN=12V

2.0

4.0

3.0

2.0

1.0

0.0

Highside SW.

Lowside SW.

1.5

1.0

0.5

0.0

-50 -25

0

25

50

75 100 125

-50 -25

0

25

50

75 100 125

Ambient Temperature :Ta[℃]

(9) Quiescent Current vs. Ambient Temperature

XC9268B75Dxx

(f_OSC=2.2MHz)

XC9268B75Cxx

(f_OSC=1.2MHz)

V_IN=12V

30

25

20

15

10

5

30

25

20

15

10

5

0

-50 -25

0

25

50

75 100 125

-50 -25

0

25

50

75 100 125

Ambient Temperature :Ta[℃]

20/30

XC9268

Series

■TYPICAL PERFORMANCE CHARACTERISTICS(Continued)

(10) Internal Soft-Start Time vs. Ambient Temperature

(11) External Soft-Start Time vs. Ambient Temperature

XC9268B75xxx

V_IN=12V, R_SS=430kΩ, C_SS=0.47μF

V_IN=12V

4.0

35

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0.0

30

25

20

15

-50 -25

0

25

50

75 100 125

-50 -25

0

25

50

75 100 125

Ambient Temperature :Ta[℃]

(12) PG Detect Voltage vs. Ambient Temperature

XC9268B75xxx

(13) PG Output Voltage vs. Ambient Temperature

XC9268B75xxx

V_IN=12V

V_IN=12V, I_PG=1mA

0.75

0.4

0.3

0.2

0.1

0.0

0.70

0.65

0.60

-50 -25

0

25

50

75 100 125

-50 -25

0

25

50

75 100 125

Ambient Temperature :Ta[℃]

(14) EN/SS Voltage vs. Ambient Temperature

XC9268B75xxx

V_IN=12V

4.0

3.0

2.0

1.0

0.0

EN/SS"H"

EN/SS"L"

-50 -25

0

25

50

75 100 125

Ambient Temperature :Ta[℃]

21/30

XC9268 Series

■TYPICAL PERFORMANCE CHARACTERISTICS(Continued)

(15) Load Transient Response

XC9268B75Cxx、 f_OSC=1.2MHz

V_IN=12V, V_OUT=3.3V, I_OUT=10mA→300mA

XC9268B75Cxx、 f_OSC=1.2MHz

V_IN=24V, V_OUT=3.3V, I_OUT=10mA→300mA

L=4.7μH(CLF5030NIT-4R7), C_IN=4.7μF×2(C2012X6S1H475K)

C_L=10μF×2 (C3216X7R1E106K)

L=4.7μH(CLF5030NIT-4R7), C_IN=4.7μF×2(C2012X6S1H475K)

C_L=10μF×2 (C3216X7R1E106K)

1.0ms/div

I_OUT=10mA→300mA

V_OUT: 500mV/div

XC9268B75Cxx、 f_OSC=1.2MHz

V_IN=12V, V_OUT=5.0V, I_OUT=10mA→300mA

XC9268B75Cxx、 f_OSC=1.2MHz

V_IN=24V, V_OUT=5.0V, I_OUT=10mA→300mA

L=6.8μH(CLF5030NIT-6R8), C_IN=4.7μF×2(C2012X6S1H475K)

C_L=10μF×2 (C3216X7R1E106K)

L=6.8μH(CLF5030NIT-6R8), C_IN=4.7μF×2(C2012X6S1H475K)

C_L=10μF×2 (C3216X7R1E106K)

1.0ms/div

I_OUT=10mA→300mA

V_OUT: 500mV/div

XC9268B75Dxx、 f_OSC=2.2MHz

V_IN=12V, V_OUT=3.3V, I_OUT=10mA→300mA

L=2.2μH(CLF5030NIT-2R2), C_IN=2.2μF×2(C2012X7R1H225K)

C_L=10μF×2 (C3216X7R1E106K)

1.0ms/div

I_OUT=10mA→300mA

V_OUT: 500mV/div

22/30

XC9268

Series

■TYPICAL PERFORMANCE CHARACTERISTICS(Continued)

(15) Load Transient Response

XC9268B75Dxx、 f_OSC=2.2MHz

V_IN=12V, V_OUT=5.0V, I_OUT=10mA→300mA

XC9268B75Dxx、 f_OSC=2.2MHz

V_IN=24V, V_OUT=5.0V, I_OUT=10mA→300mA

L=3.3μH(CLF5030NIT-3R3), C_IN=2.2μF×2(C2012X7R1H225K)

C_L=10μF×2 (C3216X7R1E106K)

L=3.3μH(CLF5030NIT-3R3), C_IN=2.2μF×2(C2012X7R1H225K)

C_L=10μF×2 (C3216X7R1E106K)

1.0ms/div

I_OUT=10mA→300mA

V_OUT: 500mV/div

(16) Input Transient Response

XC9268B75Cxx、 f_OSC=1.2MHz

V_IN=8V→16V, V_OUT=3.3V, I_OUT=300mA

XC9268B75Cxx、 f_OSC=1.2MHz

V_IN=16V→32V, V_OUT=3.3V, I_OUT=300mA

L=4.7μH(CLF5030NIT-4R7), C_IN=4.7μF×2(C2012X6S1H475K)

C_L=10μF×2 (C3216X7R1E106K)

L=4.7μH(CLF5030NIT-4R7), C_IN=4.7μF×2(C2012X6S1H475K)

C_L=10μF×2 (C3216X7R1E106K)

1.0ms/div

V_IN=16V→32V

V_IN=8V→16V

V_OUT: 200mV/div

XC9268B75Cxx、 f_OSC=1.2MHz

V_IN=8V→16V, V_OUT=5.0V, I_OUT=300mA

XC9268B75Cxx、 f_OSC=1.2MHz

V_IN=16V→32V, V_OUT=5.0V, I_OUT=300mA

L=6.8μH(CLF5030NIT-6R8), C_IN=4.7μF×2(C2012X6S1H475K)

C_L=10μF×2 (C3216X7R1E106K)

L=6.8μH(CLF5030NIT-6R8), C_IN=4.7μF×2(C2012X6S1H475K)

C_L=10μF×2 (C3216X7R1E106K)

1.0ms/div

V_IN=16V→32V

V_IN=8V→16V

V_OUT: 200mV/div

23/30

XC9268 Series

■TYPICAL PERFORMANCE CHARACTERISTICS(Continued)

(16) Input Transient Response

XC9268B75Dxx、 f_OSC=2.2MHz

V_IN=8V→16V, V_OUT=3.3V, I_OUT=300mA

L=2.2μH(CLF5030NIT-2R2), C_IN=2.2μF×2(C2012X7R1H225K)

C_L=10μF×2 (C3216X7R1E106K)

1.0ms/div

V_IN=8V→16V

V_OUT: 200mV/div

XC9268B75Dxx、 f_OSC=2.2MHz

V_IN=8V→16V, V_OUT=5.0V, I_OUT=300mA

XC9268B75Dxx、 f_OSC=2.2MHz

V_IN=16V→32V, V_OUT=5.0V, I_OUT=300mA

L=3.3μH(CLF5030NIT-3R3), C_IN=2.2μF×2(C2012X7R1H225K)

C_L=10μF×2 (C3216X7R1E106K)

L=3.3μH(CLF5030NIT-3R3), C_IN=2.2μF×2(C2012X7R1H225K)

C_L=10μF×2 (C3216X7R1E106K)

1.0ms/div

V_IN=16V→32V

V_IN=8V→16V

V_OUT: 200mV/div

(17) EN/SS Rising Response

XC9268B75Cxx、 f_OSC=1.2MHz

V_IN=12V, V_ENSS=0→12V, V_OUT=3.3V, I_OUT=300mA

XC9268B75Cxx、 f_OSC=1.2MHz

V_IN=24V, V_ENSS=0→24V, V_OUT=3.3V, I_OUT=300mA

L=4.7μH(CLF5030NIT-4R7), C_IN=4.7μF×2(C2012X6S1H475K)

C_L=10μF×2 (C3216X7R1E106K)

L=4.7μH(CLF5030NIT-4R7), C_IN=4.7μF×2(C2012X6S1H475K)

C_L=10μF×2 (C3216X7R1E106K)

1.0ms/div

V_EN/SS=0V→24V

V_EN/SS=0V→12V

V_OUT: 2V/div

24/30

XC9268

Series

■TYPICAL PERFORMANCE CHARACTERISTICS(Continued)

(17) EN/SS Rising Response

XC9268B75Cxx、 f_OSC=1.2MHz

V_IN=12V, V_ENSS=0→12V, V_OUT=5V, I_OUT=300mA

XC9268B75Cxx、 f_OSC=1.2MHz

V_IN=24V, V_ENSS=0→24V, V_OUT=5V, I_OUT=300mA

L=6.8μH(CLF5030NIT-6R8), C_IN=4.7μF×2(C2012X6S1H475K)

C_L=10μF×2 (C3216X7R1E106K)

L=6.8μH(CLF5030NIT-6R8), C_IN=4.7μF×2(C2012X6S1H475K)

C_L=10μF×2 (C3216X7R1E106K)

1.0ms/div

V_EN/SS=0V→24V

V_EN/SS=0V→12V

V_OUT: 2V/div

XC9268B75Dxx、 f_OSC=2.2MHz

V_IN=12V, V_ENSS=0→12V, V_OUT=3.3V, I_OUT=300mA

L=2.2μH(CLF5030NIT-2R2), C_IN=2.2μF×2(C2012X7R1H225K)

C_L=10μF×2 (C3216X7R1E106K)

1.0ms/div

V_EN/SS=0V→12V

V_OUT: 2V/div

XC9268B75Dxx、 f_OSC=2.2MHz

V_IN=12V, V_ENSS=0→12V, V_OUT=5V, I_OUT=300mA

XC9268B75Dxx、 f_OSC=2.2MHz

V_IN=24V, V_ENSS=0→24V, V_OUT=5V, I_OUT=300mA

L=3.3μH(CLF5030NIT-3R3), C_IN=2.2μF×2(C2012X7R1H225K)

C_L=10μF×2 (C3216X7R1E106K)

L=3.3μH(CLF5030NIT-3R3), C_IN=2.2μF×2(C2012X7R1H225K)

C_L=10μF×2 (C3216X7R1E106K)

1.0ms/div

V_EN/SS=0V→24V

V_EN/SS=0V→12V

V_OUT: 2V/div

25/30

XC9268 Series

■TYPICAL PERFORMANCE CHARACTERISTICS(Continued)

(18) VIN Rising Response

XC9268B75Cxx、 f_OSC=1.2MHz

_IN=0→12V, V_ENSS=0→12V, V_OUT=3.3V, I_OUT=300mA

XC9268B75Cxx、 f_OSC=1.2MHz

V_IN=0→24V, V_ENSS=0→24V, V_OUT=3.3V, I_OUT=300mA

V

L=4.7μH(CLF5030NIT-4R7), C_IN=4.7μF×2(C2012X6S1H475K)

C_L=10μF×2 (C3216X7R1E106K)

L=4.7μH(CLF5030NIT-4R7), C_IN=4.7μF×2(C2012X6S1H475K)

C_L=10μF×2 (C3216X7R1E106K)

1.0ms/div

V_IN=0V→24V

V_IN=0V→12V

V_OUT: 2V/div

XC9268B75Cxx、 f_OSC=1.2MHz

_IN=0→12V, V_ENSS=0→12V, V_OUT=5V, I_OUT=300mA

XC9268B75Cxx、 f_OSC=1.2MHz

_IN=0→24V, V_ENSS=0→24V, V_OUT=5V, I_OUT=300mA

V

L=6.8μH(CLF5030NIT-6R8), C_IN=4.7μF×2(C2012X6S1H475K)

C_L=10μF×2 (C3216X7R1E106K)

L=6.8μH(CLF5030NIT-6R8), C_IN=4.7μF×2(C2012X6S1H475K)

C_L=10μF×2 (C3216X7R1E106K)

1.0ms/div

V_EN/SS=0V→24V

V_EN/SS=0V→12V

V_OUT: 2V/div

XC9268B75Dxx、 f_OSC=2.2MHz

V_IN=0→12V, V_ENSS=0→12V, V_OUT=3.3V, I_OUT=300mA

L=2.2μH(CLF5030NIT-2R2), C_IN=2.2μF×2(C2012X7R1H225K)

C_L=10μF×2 (C3216X7R1E106K)

1.0ms/div

V_EN/SS=0V→12V

V_OUT: 2V/div

26/30

XC9268

Series

■TYPICAL PERFORMANCE CHARACTERISTICS(Continued)

(18) VIN Rising Response

XC9268B75Dxx、 f_OSC=2.2MHz

V_IN=0→12V, V_ENSS=0→12V, V_OUT=5V, I_OUT=300mA

XC9268B75Dxx、 f_OSC=2.2MHz

V_IN=0→24V, V_ENSS=0→24V, V_OUT=5V, I_OUT=300mA

L=3.3μH(CLF5030NIT-3R3N-D), C_IN=2.2μF×2(C2012X7R1H225K)

C_L=10μF×2 (C3216X7R1E106K)

L=3.3μH(CLF5030NIT-3R3N-D), C_IN=2.2μF×2(C2012X7R1H225K)

C_L=10μF×2 (C3216X7R1E106K)

1.0ms/div

V_EN/SS=0V→24V

V_EN/SS=0V→12V

V_OUT: 2V/div

27/30

XC9268 Series

■PACKAGING INFORMATION

For the latest package information go to, www.torexsemi.com/technical-support/packages

PACKAGE

SOT-89-5

OUTLIN / LAND PATTERN

SOT-89-5 PKG

THERMAL CHARACTERISTICS

Standard Board

SOT-89-5 Power Dissipation

JESD51-7 Board

Standard Board

JESD51-7 Board

USP-6C

USP-6C PKG

USP-6C Power Dissipation

28/30

XC9268

Series

■MARKING RULE

●SOT-89-5

①② represents product series, products type,

5

2

4

MARK

PRODUCT SERIES

XC9268B75***-G

①

②

6

1

※USP-6CUnder dot

1

2

3

③ presents Oscillation Frequency

●USP-6C(Under dot)

MARK

Oscillation Frequency

PRODUCT SERIES

N

U

1.2MHz

2.2MHz

XC9268B75C**-G

XC9268B75D**-G

1

2

3

6

5

4

④⑤ represents production lot number

01～09, 0A～0Z, 11～9Z, A1～A9, AA～AZ, B1～ZZ repeated

(G，I，J，O，Q，W excluded)* No character inversion used.

29/30

XC9268 Series

1. The product and product specifications contained herein are subject to change without notice to

improve performance characteristics. Consult us, or our representatives before use, to confirm that

the information in this datasheet is up to date.

2. The information in this datasheet is intended to illustrate the operation and characteristics of our

products. We neither make warranties or representations with respect to the accuracy or

completeness of the information contained in this datasheet nor grant any license to any intellectual

property rights of ours or any third party concerning with the information in this datasheet.

3. Applicable export control laws and regulations should be complied and the procedures required by

such laws and regulations should also be followed, when the product or any information contained in

this datasheet is exported.

4. The product is neither intended nor warranted for use in equipment of systems which require

extremely high levels of quality and/or reliability and/or a malfunction or failure which may cause loss

of human life, bodily injury, serious property damage including but not limited to devices or equipment

used in 1) nuclear facilities, 2) aerospace industry, 3) medical facilities, 4) automobile industry and

other transportation industry and 5) safety devices and safety equipment to control combustions and

explosions. Do not use the product for the above use unless agreed by us in writing in advance.

5. Although we make continuous efforts to improve the quality and reliability of our products;

nevertheless Semiconductors are likely to fail with a certain probability. So in order to prevent personal

injury and/or property damage resulting from such failure, customers are required to incorporate

adequate safety measures in their designs, such as system fail safes, redundancy and fire prevention

features.

6. Our products are not designed to be Radiation-resistant.

7. Please use the product listed in this datasheet within the specified ranges.

8. We assume no responsibility for damage or loss due to abnormal use.

Semiconductor Ltd in writing in advance.

TOREX SEMICONDUCTOR LTD.

30/30


型号：	XC9268B75CER-G
厂家：	Torex Semiconductor
描述：	36V Operation 600mA Synchronous Step-Down DC/DC Converters
文件：	总30页 (文件大小：1103K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

XC9268B75CER-G [TOREX]

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