22uF

1.8V / 2A

10uF

2.2 µH

(3 .. 17)V

3.3nF

TPS62141

PVIN

AVIN

EN

SS/TR

DEF

FSW

SW

VOS

PG

FB

AGND

PGND

100k

TPS62140

TPS62141, TPS62142, TPS62143

www.ti.com

SLVSAJ0

– NOVEMBER 2011

3-V to 17-V 2-A Step-Down Converter in 3-mm

× 3-mm QFN Package

Check for Samples: TPS62140, TPS62141, TPS62142, TPS62143

1

FEATURES

DESCRIPTION

The TPS6214X family is an easy-to-use synchronous

•

step-down dc-dc converter optimized for applications

•

Input Voltage Range: 3 V to 17 V

with high power density. A high switching frequency

•

Up to 2-A Output Current

of typically 2.5 MHz allows the use of small inductors

and provides fast transient response by use of the

•

Adjustable Output Voltage from 0.9 V to 6 V

DCS-Control

™ topology.

•

Pin-Selectable Output Voltage (Nominal, +5%)

With its wide operating input voltage range of 3 V to

•

Programmable Soft Start and Tracking

17 V, the devices are ideally suited for systems

•

Seamless Power-Save Mode Transition

powered from either a Li-Ion or other batteries, as

•

Quiescent Current of 17

µA (typ.)

well as from 12-V intermediate power rails. It

supports up to 2 A of continuous output current at

•

Selectable Operating Frequency

output voltages between 0.9 V and 6 V (with 100%

•

Power-Good Output

duty-cycle mode).

•

100% Duty-Cycle Mode

The output voltage start-up ramp is controlled by the

•

Short-Circuit Protection

soft-start pin, which allows operation as either a

•

Overtemperature Protection

standalone power supply or in tracking configurations.

Power sequencing is also possible by configuring the

•

Available in a 3-mm

× 3-mm, QFN-16 Package

enable (EN) and open-drain power-good (PG) pins.

APPLICATIONS

In power-save mode, the devices show quiescent

current of about 17

μA from VIN. Power-save mode,

•

Standard 12-V 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.

Battery

In shutdown mode, the device is turned off and

•

Solid-State Disk Drives

shutdown current consumption is less than 2

μA.

•

Embedded Systems

The device, available in adjustable and fixed output

voltage versions, is packaged in a 16-pin QFN

•

LDO Replacement

package measuring 3 mm

× 3 mm (RGT).

•

Mobile PCs, Tablet, Modems, Cameras

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, 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.