22uF

1.8V / 0.5A

10uF

2.2µH

TPS62171

VIN

EN

AGND

PGND

SW

VOS

PG

FB

100k

(3 .. 17)V

TPS62170, TPS62171

TPS62172, TPS62173

www.ti.com

SLVSAT8A – NOVEMBER 2011 – REVISED APRIL 2012

Check for Samples: TPS62170, TPS62171, TPS62172, TPS62173

1

FEATURES

DESCRIPTION

The TPS6217X family is an easy to use synchronous

•

step

down

DC-DC

converter

optimized

for

•

Input Voltage Range: 3 to 17 V

applications with high power density. A high switching

•

Up to 500 mA Output Current

frequency of typically 2.25MHz allows the use of

small inductors and provides fast transient response

•

Adjustable Output Voltage from 0.9 to 6 V

as well as high output voltage accuracy by utilization

•

Fixed Output Voltage Versions

of the DCS-Control™ topology.

•

Seamless Power Save Mode Transition

With its wide operating input voltage range of 3V to

•

Typically 17µA Quiescent Current

17V, the devices are ideally suited for systems

•

Power Good Output

powered from either a Li-Ion or other battery as well

as from 12V intermediate power rails. It supports up

•

100% Duty Cycle Mode

to 0.5A continuous output current at output voltages

•

Short Circuit Protection

between 0.9V and 6V (with 100% duty cycle mode).

•

Over Temperature Protection

Power sequencing is also possible by configuring the

•

Available in a 2 × 2 mm, WSON-8 Package

Enable and open-drain Power Good pins.

In Power Save Mode, the devices show quiescent

APPLICATIONS

current of about 17

μA from VIN. Power Save Mode,

•

Standard 12V Rail Supplies

entered automatically and seamlessly if load is small,

•

POL Supply from Single or Multiple Li-Ion

maintains high efficiency over the entire load range.

In Shutdown Mode, the device is turned off and

Battery

shutdown current consumption is less than 2

μA.

•

LDO Replacement

The device, available in adjustable and fixed output

•

Embedded Systems

voltage versions, is packaged in an 8-pin WSON

•

Digital Still Camera, Video

package measuring 2 × 2 mm (DSG).

•

Mobile PC's, Tablet, Modems

spacing

spacing

Figure 1. Typical Application and Efficiency

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.

PRODUCTION DATA information is current as of publication date.

Copyright © 2011–2012, 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.