1

2

3

4

10

9

8

7

VBST

DRVH

SW

V5IN

PGOOD

TRIP

EN

VFB

TPS51211

5

6

DRVL

TST

GND

V

IN

V

OUT

V

EN

V5IN

UDG-10160

TPS51211

www.ti.com

SLUSAA7 – NOVEMBER 2010

HIGH PERFORMANCE, SINGLE SYNCHRONOUS STEP-DOWN

CONTROLLER FOR NOTEBOOK POWER SUPPLY

1

FEATURES

APPLICATIONS

•

Notebook Computers

2

•

Wide Input Voltage Range: 3 V to 28 V

•

I/O Supplies

•

Output Voltage Range: 0.7 V to 2.6 V

•

System Power Supplies

•

Wide Output Load Range: 0 to 20A+

•

Built-in 0.5% 0.7 V Reference

DESCRIPTION

•

290-kHz, Adaptive On-Time D-CAP™ MODE

The TPS51211 is a small-sized single buck controller

Control

with adaptive on-time D-CAP™ mode. The device is

•

suitable for low output voltage, high current, PC

•

Internal 1-ms Voltage Servo Soft-start

system power rail and similar point-of-load (POL)

power supply in digital consumer products. A small

•

Pre-Charged Start-up Capability

package with minimal pin-count saves space on the

•

Built in Output Discharge

PCB, while a dedicated EN pin and pre-set frequency

•

Power Good Output

minimize design effort required for new designs. The

skip-mode at light load condition, strong gate drivers

•

Integrated Boost Switch

•

Built-in OVP/UVP/OCP

low-loss and high efficiency, over a broad load range.

•

Thermal Shutdown (Non-latch)

The conversion input voltage which is the high-side

FET drain voltage ranges from 3 V to 28 V and the

•

SON-10 (DSC) Package

output voltage ranges from 0.7 V to 2.6 V. The device

requires an external 5-V supply. The TPS51211 is

available in a 10-pin SON package specified from

–40°C to 85°C.

TYPICAL APPLICATION CIRCUIT

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 is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 2010, 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.