L1

VIN

VINA

EN

PS

GND

L2

VOUT

FB

PGND

L1

1.5µH

C2

10µF

C1

10µF

1.8Vto

5.5V

3.3V

1200mA

TPS63011

Upto

SYNC

VSEL

TPS63010

TPS63011

TPS63012

www.ti.com

SLVS653B – JUNE 2008 – REVISED MAY 2012

HIGHLY EFFICIENT, SINGLE INDUCTOR BUCK-BOOST CONVERTER WITH 2-A

SWITCHES

Check for Samples: TPS63010, TPS63011, TPS63012

1

FEATURES

DESCRIPTION

•

Up to 96% Efficiency

The TPS6301x devices provide a power supply

•

1200-mA Output Current at 3.3 V in Step Down

solution for products powered by either a two-cell or

Mode (VIN = 3.6 V to 5.5 V)

three-cell alkaline, NiCd or NiMH battery, or a one-

•

Up to 800-mA Output Current at 3.3 V in Boost

cell Li-Ion or Li-polymer battery. Output currents can

Mode (VIN > 2.4 V)

go as high as 1200 mA while using a single-cell Li-

Ion or Li-Polymer Battery, and discharge it down to

•

Automatic Transition between Step Down and

2.5 V or lower. The buck-boost converter is based on

Boost Mode

a fixed frequency, pulse-width-modulation (PWM)

•

Device Quiescent Current less than 50

μA

controller using synchronous rectification to obtain

•

Input Voltage Range: 2 V to 5.5 V

maximum

efficiency.

At

low

load

currents,

the

converter enters Power Save mode to maintain high

•

Fixed and Adjustable Output Voltage Options

efficiency over a wide load current range. The Power

from 1.2 V to 5.5 V

Save mode can be disabled, forcing the converter to

•

Power Save Mode for Improved Efficiency at

operate at a fixed switching frequency. The maximum

Low Output Power

average current in the switches is limited to a typical

value

of

2200

mA.

The

output

voltage

is

•

Forced Fixed Frequency Operation and

programmable using an external resistor divider, or is

Synchronization possible

fixed internally on the chip. The converter can be

•

Load Disconnect During Shutdown

disabled to minimize battery drain. During shutdown,

•

Output Overvoltage Protection

the load is disconnected from the battery. The device

is packaged in a 20-pin WCSP package measuring

•

Overtemperature Protection

2.126 mm x 1.922 mm (YFF).

•

Available in Small 20 pin 2.126 mm x 1.922

mm, WCSP Package

Figure 1. Typical Application Circuit

APPLICATIONS

•

All Two-Cell and Three-Cell Alkaline, NiCd or

NiMH or Single-Cell Li Battery

Powered Products

•

Portable Audio Players

•

PDAs

•

Cellular Phones

•

Personal Medical Products

•

White LEDs

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 © 2008–2012, 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.