1

FEATURES

APPLICATIONS

DESCRIPTION

N/C

EN_PSV

TON

VOUT

VOUT_DS

V5FILT

VFB

PGOOD

TPS51315

LL

LL

LL

LL

LL

VIN

VIN

VIN

1

2

3

4

5

6

7

8

9

10

11

12

20

19

18

17

16

15

14

13

32

31

30

29

28

27

26

25

24

23

22

21

33

34

35

36

37

38

39

40

R1

R2

L1

C1

C2

R6

R5

R3

R4

ENSW

R7

C4

C3

PGOOD

5 V

V

OUT

V

IN

3 V to 14 V

UDG-08154

TPS51315

10-A STEP-DOWN SYNCHRONOUS SWITCHER WITH INTEGRATED MOSFETs

• Portable Device Application

2

• Input Voltage Range: 3 V to 14 V

• Notebook Computers

• Output Voltage Range: 0.75 V to 5.5 V

• Server and Desktop

• Integrated Power MOSFETs with 10-A

Continuous Current Output

• < 5-µA Shutdown Current

The

TPS51315

is

a

D-CAP™

Mode,

10-A,

• D-CAP™ Mode with Fast Transient Response

synchronous step-down converter with integrated

• Programmable Switching Frequency with

MOSFETs. The combination of D-CAP™ mode and

External Resistor From 100 kHz to 1 MHz

on-board MOSFETs provides fast transient response

• Selectable Auto-Skip or PWM-Only Operation

performance

with

ease

of

use,

less

external

component count and small footprint. Externally

• < 1% Initial Reference Accuracy

adjustable switching frequency allows optimal design

• Internal Soft-Start Control

between component size and efficiency tradeoff.

• Integrated Boost Diode

Ceramic output capacitors can be employed by

adding a few extra components. The TPS51315 is

• Power Good Signal

available in the thermally-efficient 40-pin, 5 mm x

• Adjustable Overcurrent Limit via External

7 mm, QFN package and is specified from -40°C to

Resistor

85°C ambient.

• OVP/UVP/UVLO Protection

• Integrated Selectable Output Discharge

• Prebias Output Voltage Start-Up with Disabled

Output Discharge

• Thermal Shutdown

• 40-Pin QFN Package with PowerPAD™

• Supports All Ceramic Output Capacitors

1

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

2

D-CAP, PowerPAD are trademarks of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 2009, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.