SI9176DM-T1-E3_技术文档

Si9176

Vishay Siliconix

High Performance Step-Down DC-DC Converter

With Adjustable Output Voltage

D User Selectable PWM, PSM, or AUTO Mode

FEATURES

D PSM Frequency w20 kHz for Inaudible

D 2-MHz PWM Operation

Harmonics

D Integrated MOSFET Switches

D 2.6-V to 6.0-V Input Voltage Range

D Minimal Number of External Components

D Up to 96% conversion efficiency

D 600-mA Load Capability

APPLICATIONS

D W-CDMA Cell Phone

D PDAs/Palmtop PCs

D LCD Modules

D 100% Duty Cycle Allows Low Dropout

D Integrated Compensation Circuit

D Over-Current Protection

D Portable Image Scanners

D GPS Receivers

D Smart Phones

D Shutdown Current < 2 mA

D Thermal Shutdown

D MP3 Players

D Integrated UVLO

D 3G Cell Phone

D 10-Pin MSOP and Space Saving MLP33 Packaging

D Digital Cameras

DESCRIPTION

The Si9176 is a high efficiency 600-mA step down converter

with internal low on resistance power MOSFET switch and

synchronous rectifier transistors. It is designed to convert one

cell LiIon battery or three cell alkaline battery voltages to a

PSM mode provides increased efficiency at light loads. In PSM

mode the oscillator frequency is kept above 20 kHz to avoid

audio band interference. When operating in Auto mode, the

converter automatically selects operating in either PWM or

PSM mode according to load current demand.

dynamically adjustable dc output.

The integrated high

frequency error amplifier with internal compensation

minimizes external components.

In order to insure efficient conversion throughout the entire

load range, PWM (pulse width modulation), PSM (pulse

skipping mode) or Auto mode can be selected. In PWM mode,

2-MHz switching permits use of small external inductor and

capacitor sizes allowing one of the smallest solutions.

The Si9176 is available in the10-pin MSOP and the even

smaller MLP33 package and is specified to operate over the

industrial temperature range of –40_C to 85_C. The Si9176

packaged in the MLP33 package is available in both standard

and lead (Pb)-free.

TYPICAL APPLICATIONS CIRCUIT

BATTERY

V

IN

2.2 mH

V

OUT

LX

V

DD

C

IN

10 mF

C

OUT

4.7 mF

R

1

Si9176

PGND

FB

SD

ENABLE

PWM/PSM/AUTO

REF

R

2

MODE

AGND

Document Number: 71753

S-41148—Rev. C, 14-Jun-04

www.vishay.com

1

Si9176

Vishay Siliconix

ABSOLUTE MAXIMUM RATINGS

Voltages Referenced to AGND = 0 V

Thermal Impedance (Q )

JA

V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.2 V

10-Pin MSOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135_C/W

IN, DD

10-Pin MLP33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71_C/W

Lx, SD, MODE, FB, C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 to 6.2 V

REF

(or to V

)0.3 V whichever is less)

Peak Inductor Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.8 A

DD

GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 to +0.3 V

ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 kV

Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65 to 125_C

Operating Junction Temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150_C

Notes

a. Device mounted with all leads soldered or welded to PC board.

b. Derate 7.4 mW/_C above 85_C.

c. Derate 14 mW/_C above 85_C.

a

Power Dissipation (Package)

b

10-pin MSOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 481 mW

10-pin MLP33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 915 mW

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation

of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating

conditions for extended periods may affect device reliability.

RECOMMENDED OPERATING RANGE

V

Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.6 V to 5.5 V

Inductor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2 mH

Operating Load Current PWM Mode . . . . . . . . . . . . . . . . . . . . . . 0 to 600 mA

Operating Load Current PSM Mode . . . . . . . . . . . . . . . . . . . . . . . 0 to 150 mA

IN

C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 mF Ceramic

IN

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.7 mF Ceramic

OUT

SPECIFICATIONS

Test Conditions Unless Specified

Parameter

Limits

−40_C to 85_C, V = V , C = 10 mF, C

= 4.7 mF

2

IN

DD,

IN

OUT

Mode^fSymbol

Min^a

Typ^bMax^a

Unit

L = 2.2 mH, 2.6 V v V v 5.5 V, R = 11.3 kW, R = 20 kW

IN

1

Under Voltage Lockout (UVLO)

Under Voltage Lockout (turn-on)

Hysteresis

V

IN

rising

2.3

2.5

V

0.1

Shutdown (SD)

Logic HIGH

Logic LOW

V

1.6

SDH

V

0.4

SDL

R

= 3.3 W

R = 51 W

L

100

L

Settle Within $2% accuracy SD rising

t < 1 ms

c

Delay to Output

t

en

ms

r

Pull Down

I

Input at V

mA

SD

IN

Mode Selection Tri-Level Logic (MODE)

MODE Pin HIGH

MODE Pin LOW

PWM

Auto

V

−0.4

V

IN

V

0.4

2.4

MODE = GND

MODE = V

−5

Mode Pin Input Current

mA

5

IN

Oscillator

Frequency

f

1.6

2

MHz

V

OSC

Error Amplifier (FB Pin)

T

= 25_C

1.190

1.173

1.215

1.240

1.257

A

FB Voltage Accuracy

V

FB

T

A

= −40 to 85_C

Power Supply Rejection

Input Bias Current

PSRR

V

IN

= 2.6 V to 5.5 V

60

db

DC

I

FB

V

FB

= 1.25 V

−1

0.01

1

mA

Document Number: 71753

S-41148—Rev. C, 14-Jun-04

www.vishay.com

2

Si9176

Vishay Siliconix

SPECIFICATIONS

Test Conditions Unless Specified

Parameter

Limits

−40_C to 85_C, V = V , C = 10 mF, C

= 4.7 mF

2

IN

DD,

IN

OUT

Mode^fSymbol

Min^a

Typ^bMax^a

Unit

L = 2.2 mH, 2.6 V v V v 5.5 V, R = 11.3 kW, R = 20 kW

IN

1

Converter Operation

Maximum Output

Current

PWM

PSM

I

V

= 3.6 V

600

mA

LOAD

IN

Maximum Output

Current

150

LOAD

IN

e

Dropout Voltage

V

= 2.6 V, I = 600 mA

OUT

190

300

0.5

300

mV

DD

IN

Closed Loop Bandwidth

BW

kHz

PWM

PSM

PWM

PSM

I

= 30 mA to 600 mA

= 30 mA to 75 mA

OUT

V

= 3.6 V

= 1.9 V @ 25_C

IN

c

Load Regulation

%

V

OUT

I

0.25

"0.1

200

1500

250

60

OUT

Line Regulation

V

= 3.0 V, V = 3.5 V to 5.5 V

%/V

mA

mW

OUT

IN

PWM/PSM Switch Threshold Current

Maximum Inductor Peak Current Limit

P-Channel

I

AUpk

I

Lpk

On Resistance

r

V

IN

= 3.6 V

DS(on)

N-Channel

PWM

I

= 600 mA

= 30 mA

= 600 mA

= 30 mA

OUT

Output Ripple Voltage

0.05 W C

mV

p-p

OUT(ESR)

PSM

I

80

OUT

PWM

90

OUT

Efficiency

V

= 3.6 V, V

= 3.3 V

%

IN

OUT

PSM

I

80

OUT

Frequency

PSM

I

w 30 mA

20

kHz

OUT

Supply Current

PWM

PSM

450

400

750

2

I

SUPPLY

DD

Input Supply Current

(V

&

I

= 0 mA, V = 3.6 V (not switching, FB = GND)

IN

OUT

mA

V

IN

)

Shutdown Supply Current

I

SD = Low

SD

Thermal Shutdown

c

Thermal Shutdown Temperature

T

165

20

J(S/D)

_C

c

Thermal Hysteresis

Notes

a. The algebraic convention whereby the most negative value is a minimum and the most positive a maximum, is used in this data sheet.

b. Typical values are for DESIGN AID ONLY, not guaranteed or subject to production testing.

c. Guaranteed by design.

d. Settling times, t , apply after t

.

s

en

e. Bypass is a device mode of operation, in which, the device is in 100% duty cycle. Bypass operation is possible in either PWM or PSM.

f. Operating modes are controlled with the MODE pin where Auto mode = MODE = LOW, PWM Mode = MODE = HIGH, and PSM mode = MODE = OPEN.

Document Number: 71753

S-41148—Rev. C, 14-Jun-04

www.vishay.com

3

Si9176

Vishay Siliconix

PIN CONFIGURATION

MSOP-10

MLP33

1

2

3

4

5

10

9

L

PGND

X

L

10

9

8

7

6

PGND

V

IN

AGND

SD

MODE

X

AGND

FB

V

IN

AGND

FB

2

3

4

5

8

AGND

SD

V

7

V

DD

REF

DD

6

REF

MODE

Top View

PIN DESCRIPTION

Pin Number

Name

Function

1

2

3

4

5

L

Inductor connection

X

AGND

FB

Low power analog ground

Output voltage feedback

V

DD

Input supply voltage for the analog circuit.

REF

Internal reference, no connection should be made to this pin.

Used to select switching mode of the buck converter

PWM/PSM Pin Logic:

6

MODE

MODE Pin

Operating Mode

PWM

V

IN

Open

GND

PSM

AUTO

7

8

SD

Logic low disables IC and reduces quiescent current to below 2 mA

Must be connected to AGND.

AGND

9

V

IN

Input supply voltage

10

PGND

Low impedance power ground

ORDERING INFORMATION

MSOP-10

Standard

MLP33

Lead (Pb)-Free

Standard

Part Number

Marking

Temperature

Marking

Temperature

Si9176DH-T1

9176

−40 to 85_C

Si9176DM-T1

Si9176DM-T1—E3

9176

−40 to 85_C

Additional voltage options are available.

Eval Kit

Temperature Range

Board

Si9176DB

−40 to 85_C

Surface Mount

Document Number: 71753

S-41148—Rev. C, 14-Jun-04

www.vishay.com

4

Si9176

Vishay Siliconix

FUNCTIONAL BLOCK DIAGRAM

V

DD

V

IN

Si9176

PMOS

Current Sense

Error

PWM

Comparator

Amplifier

FB

PWM and

Pulse

Skipping

Logic

−

Clamp

−

+

L

X

REF

+

To IC Bias

Voltage

Reference,

UVLO

2 MHz

Oscillator

AGND

MODE SD

PGND

DETAIL DESCRIPTION

General

conditions. Switching to other modes of operation occurs

according to the state of the MODE pin and the load current.

The start-up sequence occurs after SD switches from LOW to

HIGH with V_INapplied, or after V_INrises above the UVLO

threshold and SD is a logic HIGH.

The Si9176 is a high efficiency synchronous dc-dc converter

that is ideally suited for lithium ion battery or three cell alkaline

applications, as well as step-down of 3.3-V or 5.0-V supplies.

The major blocks of the Si9176 are shown in the Functional

Block Diagram. The 0.25-W internal MOSFETs switching at a

frequency of 2-MHz minimize PC board space while providing

high conversion efficiency and performance. The high

frequency error-amplifier with built-in loop compensation

minimizes external components and provides rapid output

settling times of <30 ms. Sensing of the inductor current for

control is accomplished internally without power wasting

resistors.

Mode Control (MODE)

The MODE pin allows the user to control the mode of operation

or to enable the Si9176 to automatically optimize the mode of

operation according to load current. There are three different

modes of operation as controlled by the MODE pin. Switching

waveforms are shown in the Typical Switching Waveform

sections, page 9.

Start-Up

PWM Mode (MODE pin = HIGH)

When voltage is applied to V_INand V_DD, the under-voltage

lockout (UVLO) circuit prevents the oscillator and control

circuitry from turning on until the voltage on the exceeds 2.4 V.

With a typical UVLO hysteresis of 0.1 V, the converter

operates continuously until the voltage on V_INdrops below

2.3 V, whereupon the converter shuts down. This hysteresis

prevents false start-stop cycling as the input voltage

approaches the UVLO switching threshold. Start-up is always

accomplished in PWM mode to ensure start-up under all load

With the MODE pin in the logic HIGH condition, the Si9176

operates as a 2-MHz fixed frequency voltage mode converter.

A NMOS synchronous rectification MOSFET transistor

provides very high conversion efficiency for large load currents

by minimizing the conduction losses. PWM mode provides low

output ripple, fast transient response, and switching frequency

synchronization. Output load currents can range from 0 to

600 mA.

Document Number: 71753

S-41148—Rev. C, 14-Jun-04

www.vishay.com

5

Si9176

Vishay Siliconix

The error amplifier and comparator control the duty cycle of the

PMOS MOSFET to continuously force the REF pin and FB pin

voltages to be equal. As the input-to-output voltage difference

drops, the duty cycle of the PMOS MOSFET can reach 100%

to allow system designers to extract the maximum stored

energy from the battery. The dropout voltage is 190 mV at

600 mA.

currents, the converter operates in PSM mode to conserve

power. The switchover threshold between the two modes is

determined by the peak inductor current, which is 300 mA

nominal. There is hysteresis in the switchover threshold to

provide smooth operation. Thus, the mode PSM-to-PWM

mode switchover current for increasing load currents is higher

than that of PWM-to-PSM mode switchover for decreasing

load currents.

During each cycle, the PMOS switch current is limited to a

maximum of 1.5 A (typical) thereby protecting the IC while

continuing to force maximum current into the load.

Oscillator

The internal oscillator provides for a fixed 2-MHz switching

frequency.

Pulse Skipping Mode (MODE pin = OPEN)

By leaving the MODE pin open-circuit, the converter runs in

pulse skipping mode (PSM). In PSM mode the oscillator

continues to operate, but switching only occurs if the FB pin

voltage is below the REF voltage at the start of each clock

cycle. Clock cycles are skipped thereby reducing the

switching frequency to well below 100 kHz and minimizing

switching losses for improved efficiency at loads under

150 mA. Although PSM mode switching frequency varies with

line and load conditions, the minimum PSM frequency will be

kept above 20 kHz for load currents of 30 mA or more to

prevent switching noise from reaching the audio frequency

range.

Dynamic Output Voltage Control (REF)

The Si9176 is designed with an adjustable output voltage

which has a change of V_FBto V_IN− V_DROP. VOUT is defined

according to the following relationship:

R₁

R₂

₊ǒ_{1 )}Ǔ

V_OUT

V_FB

Each time the PMOS switch is turned on, the inductor current

is allowed to reach 300 mA. Once achieved, the PMOS switch

is turned off and the NMOS switch is turned on in the normal

manner. However, unlike PWM mode, the NMOS switch, turns

off as the switch current approaches zero current to maximize

efficiency. The PMOS switch remains on continuously (100%

duty cycle) when the input-voltage-to-output-voltage

difference is low enabling maximum possible energy

extraction from the battery.

Converter Shutdown (SD pin)

With logic LOW level on the SD pin, the Si9176 is shutdown.

Shutdown reduces current consumption to less than 2-mA by

shutting off all of the internal circuits. Both the PMOS and

NMOS transistors are turned off. A logic HIGH enables the IC

to start up as described in “Start-up” section.

Thermal Shutdown

PSM mode is recommend for load currents of 150 mA or less.

The Si9176 includes thermal shutdown circuitry, which turns

off the regulator when the junction temperature exceeds

165_C. Once the junction temperature drops below 145_C,

the regulator is enabled. If the condition causing the over

temperature, the Si9176 begins thermal cycling, turning the

regulator on and off in response to junction temperature.

Restart from a thermal shutdown condition is the same as

described in the “Start-up” section.

Auto Mode

When the MODE pin grounded, the converter is set to Auto

mode. Switching between PWM mode and PSM modes takes

place automatically without an external control signal. For

heavy load operation, the converter will operate in PWM mode

to achieve maximum efficiency. When delivering light load

Document Number: 71753

S-41148—Rev. C, 14-Jun-04

www.vishay.com

6

Si9176

Vishay Siliconix

APPLICATIONS CIRCUIT

BATT

V

IN

2.2 mH

V

OUT

LX

V

DD

C

1

C

IN

10 mF

C

OUT

C

2

4.7 mF

Si9176

R

1

PGND

FB

REF

AGND

REF

ENABLE

PWM/PSM/AUTO

SD

R

2

MODE

AGND

C

= 10 mF, Ceramic, Murata GRM42-2X5R106K16

IN

1

C , C = 0.01 mF, Vishay VJ0603Y 104KXXAT

2

C

R

L

= 4.7 mF, Ceramic, Murata GRM42-6X5R475K16

OUT

= 8.2 kW, Vishay CRCW06031132F

= 20 kW, Vishay CRCW06032002F

= 2.2 mH, Toko A914BYW-2R2M

1

2

1

TYPICAL CHARACTERISTICS

V

SDH

V

SDL

SD

t

r

t

f

Undefined

(Load Dependent)

t

en

V

OUT

Time

d Indicates V

settles to $2% of the final value.

OUT

Figure 1.

PWM Mode V

Settling

OUT

Document Number: 71753

S-41148—Rev. C, 14-Jun-04

www.vishay.com

7

Si9176

Vishay Siliconix

TYPICAL CHARACTERISTICS

Dropout Voltage vs. I

Auto Mode Efficiency vs. Load

LOAD

100

200

160

120

80

V

IN

= 3.6 V

95

90

85

80

75

70

V

= 3.0 V

OUT

V

IN

= 2.6 V

V

IN

= 3.6 V

V

= 1.9 V

OUT

V

IN

= 5.5 V

40

0

100

200

300

400

500

600

0

100

200

300

400

500

600

Load Current (mA)

PSM vs. PWM Efficiency

100

95

90

85

80

75

PWM

PSM

V

Ripple

OUT

100

80

60

40

20

0

V

= 3.6 V

IN

OUT

= 1.9 V

PSM

C

OUT

= 4.7 mF

0

100

200

300

400

500

600

Load Current (mA)

Auto Mode Efficiency vs. Load Direction

100

95

90

85

80

75

Load Decreasing

Load Increasing

PWM

0

30

60

90

120

150

Load Current (mA)

0

100

200

300

400

500

600

Load Current (mA)

Document Number: 71753

S-41148—Rev. C, 14-Jun-04

www.vishay.com

8

Si9176

Vishay Siliconix

TYPICAL SWITCHING WAVEFORMS (V = 3.6 V, V

IN

= 3.0 V)

OUT

PWM mode Heavy-Load Switching Waveforms,

= 600 mA, MODE = HIGH

PWM Mode Medium-Load Switching Waveforms,

= 300 mA, MODE = HIGH

I

OUT

V

LX

, 5 V/div

V

LX

, 2 V/div

Inductor Current

500 mA/div

Inductor Current

500 mA/div

V

OUT

V

OUT

(AC-Coupled)

10 mV/div

(AC-Coupled)

10 mV/div

200 nS/div

PWM Mode Light-Load Switching Waveforms,

= 0 mA, MODE = HIGH

PSM Mode Light-Load Switching Waveforms,

I

= 150 mA, MODE = OPEN

OUT

V

LX

, 5 V/div

V

LX

, 5 V/div

Inductor Current

200 mA/div

Inductor Current

200 mA/div

V

OUT

(AC-Coupled)

10 mV/div

OUT

(AC-Coupled)

10 mV/div

200 nS/div

1.0 mS/div

PSM Mode Light-Load Switching Waveforms,

I

= 30 mA, MODE = OPEN

OUT

V

LX

, 5 V/div

Inductor Current

200 mA/div

V

OUT

(AC-Coupled)

100 mV/div

2.0 mS/div

Document Number: 71753

S-41148—Rev. C, 14-Jun-04

www.vishay.com

9

Si9176

Vishay Siliconix

TYPICAL WAVEFORMS (V = 3.6 V, V

IN

= 1.9 V)

OUT

PWM Mode Heavy-Load Switching Waveforms,

PWM Mode Medium-Load Switching Waveforms,

= 300 mA, MODE = HIGH

I

= 600 mA, MODE = HIGH

I

OUT

V

LX

, 5 V/div

V

LX

, 5 V/div

Inductor Current

500 mA/div

Inductor Current

500 mA/div

V

OUT

V

OUT

(AC-Coupled)

10 mV/div

(AC-Coupled)

10 mV/div

200 nS/div

PWM Mode Light-Load Switching Waveforms,

= 0 mA, MODE = HIGH

PSM Mode Light-Load Switching Waveforms,

I

= 150 mA, MODE = OPEN

OUT

V

LX

, 5 V/div

V

LX

, 5 V/div

Inductor Current

200 mA/div

Inductor Current

200 mA/div

V

OUT

V

OUT

(AC-Coupled)

10 mV/div

(AC-Coupled)

100 mV/div

200 nS/div

1.0 mS/div

PSM Mode Light-Load Switching Waveforms,

I

= 30 mA, MODE = OPEN

OUT

V

LX

, 5 V/div

Inductor Current

200 mA/div

V

OUT

(AC-Coupled)

100 mV/div

2.0 mS/div

Document Number: 71753

S-41148—Rev. C, 14-Jun-04

www.vishay.com

10

Si9176

Vishay Siliconix

TYPICAL START-UP AND SHUTDOWN TRANSIENT WAVEFORMS (V = 3.6 V, V

IN

= 1.9 V)

OUT

Start-Up, R

= 4 W

Start-Up, V = V = 3.6 V, R

IN SD LOAD

= 4 W

LOAD

V , V , 1 V/div

IN SD

V

, 1 V/div

SD

, 500 mV/div

OUT

V , 500 mV/div

OUT

20 mS/div

Shutdown, R

= 4 W

Enable Switching, R

= 4 W

LOAD

V , 1 V/div

SD

V

SD

1 V/div

V , 500 mV/div

OUT

V , 500 mV/div

OUT

200 mS/div

20 mS/div

TYPICAL MODE SWITCH TRANSIENT WAVEFORM

Output Transient At Mode Switch, I

= 30 mA

LOAD

V

OUT

(AC-Coupled)

200 mV/div

Mode Pin

1 V/div

100 mS/div

Document Number: 71753

S-41148—Rev. C, 14-Jun-04

www.vishay.com

11

Si9176

Vishay Siliconix

TYPICAL LOAD TRANSIENT WAVEFORMS (V = 3.6 V, V

IN

= 1.9 V)

OUT

Load Transient, Auto Mode, I

= 30 to

Load Transient, PWM Mode,

LOAD

500 mA, MODE = LOW

I

= 30 to 500 mA, L = 2.2 mH, MODE= HIGH

LOAD

I , 200 mA /div

LOAD

I , 200 mA /div

LOAD

V

OUT

V

OUT

(AC-Coupled)

50 mV/div

(AC-Coupled)

50 V/div

10 mS/div

Load Transient (PSM Mode),

= 30 to 150 mA, L = 2.2 mH

I

LOAD

I , 200 mA /div

LOAD

V

OUT

(AC-Coupled)

50 mV/div

100 mS/div

Document Number: 71753

S-41148—Rev. C, 14-Jun-04

www.vishay.com

12

Legal Disclaimer Notice

Vishay

Notice

Specifications of the products displayed herein are subject to change without notice. Vishay Intertechnology, Inc.,

or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies.

Information contained herein is intended to provide a product description only. No license, express or implied, by

estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's

terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express

or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness

for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.

The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications.

Customers using or selling these products for use in such applications do so at their own risk and agree to fully

indemnify Vishay for any damages resulting from such improper use or sale.

Document Number: 91000

Revision: 08-Apr-05

www.vishay.com

1

Package Information

Vishay Siliconix

MSOP: 10-LEADS (POWER IC ONLY)

JEDEC Part Number: MO-187, (Variation AA and BA)

(N/2) Tips)

2X

5

A

B C 0.20

N N-1

0.48 Max

Detail “B”

(Scale: 30/1)

Dambar Protrusion

E

1

2

N/2

0.50

0.60

M

S

A

0.08

C

B

7

b

Top View

e1

b

1

With Plating

e

A

See Detail “B”

c

1

0.10

C

6

Section “C-C”

Scale: 100/1

(See Note 8)

-H-

A

1

Seating Plane

Base Metal

D

-A-

3

See Detail “A”

Side View

0.25

BSC

C

Parting Line

0.07 R. Min

2 Places

ς

S

A

2

0.05

Seating Plane

E

1

-B-

L

4

-C-

T

3

0.95

End View

Detail “A”

(Scale: 30/1)

NOTES:

1. Die thickness allowable is 0.203"0.0127.

N = 10L

MILLIMETERS

2. Dimensioning and tolerances per ANSI.Y14.5M-1994.

Dim

Min

Nom

Max

Note

3. Dimensions “D” and “E ” do not include mold flash or protrusions, and are

1

measured at Datum plane -H- , mold flash or protrusions shall not exceed

0.15 mm per side.

−

0.10

1.10

0.15

0.95

0.27

0.23

0.18

A

A₁

A₂

b

b₁

c

c₁

D

E

E₁

e

e₁

L

0.05

0.75

0.17

0.13

4. Dimension is the length of terminal for soldering to a substrate.

5. Terminal positions are shown for reference only.

0.85

−

8

0.20

6. Formed leads shall be planar with respect to one another within 0.10 mm at

seating plane.

−

0.15

7. The lead width dimension does not include Dambar protrusion. Allowable

Dambar protrusion shall be 0.08 mm total in excess of the lead width

dimension at maximum material condition. Dambar cannot be located on the

lower radius or the lead foot. Minimum space between protrusions and an

adjacent lead to be 0.14 mm. See detail “B” and Section “C-C”.

3.00 BSC

4.90 BSC

3.00

3

2.90

3.10

0.50 BSC

2.00 BSC

0.55

8. Section “C-C” to be determined at 0.10 mm to 0.25 mm from the lead tip.

9. Controlling dimension: millimeters.

0.40

0.70

4

5

10. This part is compliant with JEDEC registration MO-187, variation AA and BA.

11. Datums -A- and -B- to be determined Datum plane -H- .

12. Exposed pad area in bottom side is the same as teh leadframe pad size.

10

N

T

0_

4_

6_

ECN: S-40082—Rev. A, 02-Feb-04

DWG: 5922

Document Number: 72817

28-Jan-04

www.vishay.com

1

Package Information

Vishay Siliconix

MLP33Ć10 (POWER IC ONLY)

JEDEC Part Number: Outline is consistent with JEDEC MO229-VEED-2

Detail D

4 x Q

// ccc

C

A2

A3

A

A1

NX

0.08

C

Side View

Seating

Plane

C

Detail C

e

5

NX b

L2

M

bbb

C

A B

1

2

ddd

D

A

L + L2

L2

B

E

Detail C

A1

8

R2

Detail A

Detail D

Pin 1

Mark

4

N

N-1

(ND-1) x

Bottom View

0.20 Ref

6

7

aaa

C

2 X

1

Detail B

L2

e

TopView

7

2 X

aaa C

Datum A or B

NX R1

L

NX R1

e2/2

L2

Terminal Tip

5

Terminal Tip

e

5

Even Terminal/Side

Detail B

L1

Odd Terminal/Side

0.17

0.30

L2

B

This Feature Applies To

Both Ends of The Package

Exposed Metalized Feature

Edge of Plastic Body

Detail A

Document Number: 72819

28-Nov-05

www.vishay.com

1

Package Information

Vishay Siliconix

MLP33Ć10 (POWER IC ONLY)

N = 10 PITCH: 0.50 mm, BODY SIZE: 3.00 x 3.00

MILLIMETERS*

INCHES

Dim

Min

0.80

Nom

Max

Min

0.031

Nom

Max

Notes

1, 2

A

A1

A2

A3

aaa

b

0.90

0.025

0.70

0.20

0.10

0.25

0.10

3.00 BSC

0.05

3.00 BSC

0.5

1.00

0.05

0.75

0.25

–

0.035

0.001

0.028

0.008

0.004

0.010

0.004

0.118 BSC

0.002

0.118 BSC

0.002

0.047

0.023

0.012

–

0.039

0.002

0.030

0.010

–

0

1, 2

0.65

0.15

–

0.026

0.006

–

1, 2

0.20

–

0.30

–

0.008

–

0.012

–

5, 11

1, 2

bbb

ccc

D

–

1, 2

ddd

E

–

1, 2

e

–

e2

1.10

0.45

0.20

–

1.20

0,58

0.29

–

1.30

0.65

0.45

0.125

0.043

0.018

0.008

–

0.051

0.026

0.018

0.005

1, 2, 9

1, 2

5, 11

3

L

L1

L2

N

10

ND

R1 Ref

R2 Ref

Q

5

6

–

0.100

0.075

10_

–

5, 11

1, 2

0.003

0_

12_

0_

10_

12_

* Use millimeters as the primary measurement.

ECN: S-52448—Rev. B, 28-Nov-05

DWG: 5924

NOTES:

1.

2.

3.

4.

Dimensioning and tolerancing conform to ASME Y14.5M-1994.

All dimensions are in millimeters. All angels are in degrees.

N is the total number of terminals.

The terminal #1 identifier and terminal numbering convention shall conform to JESD 95-1 SPP-012. Details of terminal #1 identifier are optional, but must

be located within the zone indicated. The terminal #1 identifier may be a molded, marked, or metallized feature.

5.

6.

7.

Dimension b applies to metallized terminal and is measured between 0.15 mm and 0.20 mm from the terminal tip.

ND refers to the maximum number of terminals on the D side.

Profile tolerance (aaa) will be applicable only to the plastic body and not to the metallized features (such as the terminal tips and tie bars.) Metallized

features may protrude a maximum of L2 from the plastic body profile.

8.

9.

The corner will be sharp unless otherwise specified with radius dimensions.

Package outline is consistent with JEDEC M0229-VEED-2.

Document Number: 72819

28-Nov-05

www.vishay.com

2

Legal Disclaimer Notice

Vishay

Disclaimer

ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE

RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.

Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively,

“Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or in any other

disclosure relating to any product.

Vishay makes no warranty, representation or guarantee regarding the suitability of the products for any particular purpose or

the continuing production of any product. To the maximum extent permitted by applicable law, Vishay disclaims (i) any and all

liability arising out of the application or use of any product, (ii) any and all liability, including without limitation special,

consequential or incidental damages, and (iii) any and all implied warranties, including warranties of fitness for particular

purpose, non-infringement and merchantability.

Statements regarding the suitability of products for certain types of applications are based on Vishay’s knowledge of typical

requirements that are often placed on Vishay products in generic applications. Such statements are not binding statements

about the suitability of products for a particular application. It is the customer’s responsibility to validate that a particular

product with the properties described in the product specification is suitable for use in a particular application. Parameters

provided in datasheets and/or specifications may vary in different applications and performance may vary over time. All

operating parameters, including typical parameters, must be validated for each customer application by the customer’s

technical experts. Product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase,

including but not limited to the warranty expressed therein.

Except as expressly indicated in writing, Vishay products are not designed for use in medical, life-saving, or life-sustaining

applications or for any other application in which the failure of the Vishay product could result in personal injury or death.

Customers using or selling Vishay products not expressly indicated for use in such applications do so at their own risk and agree

to fully indemnify and hold Vishay and its distributors harmless from and against any and all claims, liabilities, expenses and

damages arising or resulting in connection with such use or sale, including attorneys fees, even if such claim alleges that Vishay

or its distributor was negligent regarding the design or manufacture of the part. Please contact authorized Vishay personnel to

obtain written terms and conditions regarding products designed for such applications.

No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by

any conduct of Vishay. Product names and markings noted herein may be trademarks of their respective owners.

Document Number: 91000

Revision: 11-Mar-11

www.vishay.com

1


型号：	SI9176DM-T1-E3
厂家：	VISHAY
描述：	High Performance Step-Down DC-DC Converter With Adjustable Output Voltage
文件：	总17页 (文件大小：288K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

SI9176DM-T1-E3 [VISHAY]

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