FB

VCC

VIN

PGND

EN

PGOOD

NC

SW

PGND

SW

R2

R1

EN

PGOOD

3.3 or

5 V

UDG-12083

Thermal Pad

TPS51313

1

2

3

4

5

10

9

8

7

6

FB

VCC

VIN

PGND

PGND

EN

PGOOD

NC

SW

SW

Thermal

Pad

TPS51313

www.ti.com

SLUSB31 – SEPTEMBER 2012

5-V Input or 3.3-V Input, 3-A, Fully Integrated Converter

Check for Samples: TPS51313

1

FEATURES

APPLICATIONS

234

•

Input Voltage VIN Range : 3.1 V to 5.5 V

•

•

Bias Voltage VCC Range: 3.1 V to 5.5 V

•

Low-Voltage Point-of-Load (POL) Rails

•

Output Voltage Range: 0.6 V to 3.3 V

DESCRIPTION

•

0.6-V, 1% Voltage Reference Accuracy

The TPS51313 is an easy-to-use, fully integrated,

•

Switching Frequency: 1 MHz

synchronous buck converter for low voltage point-of-

•

No External Compensation is Required

load applications. It is designed to meet the NVIDIA™

OpenVreg

Type

0

specifications,

including

the

•

Fixed Voltage Servo Soft-Start Function

package and footprint requirement. It supports 3-A

•

Thermal Shutdown

(maximum) of dc output current at output voltages

X

from 0.6 V to 3.3 V. The D-CAP2™ mode adaptive,

constant

on-time

control

with

1-MHz

switching

frequency allows a small footprint when designed

using all ceramic output capacitors and offers a low

external component count. The device also features

auto-skip function at light load condition, pre-biased

start-up and internally fixed soft-start time. When the

device is disabled, the output capacitor is discharged

through internal resistor. The TPS51313 is available

in a 3 mm x 3 mm, 10-pin DRC package (Green

RoHS compliant and Pb free) and is specified

between –10°C and 85°C.

X

SIMPLIFIED APPLICATION

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-CAP2 is a trademark of Texas Instruments.

3

NVIDIA is a trademark of NVIDIA, Incorporated.

4

PCIe is a registered trademark of PLX Technology, Inc.

PRODUCTION DATA information is current as of publication date.

Copyright © 2012, 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.