(3,25 mm x 3,25 mm)

1

FEATURES

APPLICATIONS

DESCRIPTION

L

VIN

EN

UVLO

PS

GND

PGND

FB

VAUX

VOUT

TPS61200

VIN

0.3Vto5.5V

VOUT

1.8Vto5.5V

10

F

m

10

F

m

2.2

H

m

0.1

F

m

C

1

C

2

C

3

L

1

R1

R2

TPS61200

TPS61201

TPS61202

SLVS577B – MARCH 2007 – REVISED FEBRUARY 2008

www.ti.com

LOW INPUT VOLTAGE SYNCHRONOUS BOOST CONVERTER

WITH 1.3-A SWITCHES

• Power Save Mode for Improved Efficiency at

Low Output Power

2

• More than 90% Efficiency at

• Forced fixed Frequency Operation possible

–

300 mA Output Current at 3.3 V

(VIN

≥ 2.4 V)

• Load Disconnect During Shutdown

–

600 mA Output Current at 5 V (VIN

≥ 3 V)

• Overtemperature Protection

• Automatic Transition between Boost Mode and

• Small 3 mm x 3 mm QFN-10 Package

Down Conversion Mode

• Device Quiescent Current less than 55 µA

• All Single-Cell, Two-Cell and Three-Cell

• Startup into Full Load at 0.5 V Input Voltage

Alkaline, NiCd or NiMH or Single-Cell Li

• Operating Input Voltage Range from

Battery Powered Products

0.3 V to 5.5 V

• Fuel Cell And Solar Cell Powered Products

• Programmable Undervoltage Lockout

• Portable Audio Players

Threshold

• PDAs

• Output Short Circuit Protection Under all

• Cellular Phones

Operating Conditions

• Personal Medical Products

• Fixed and Adjustable Output Voltage Options

• White LED's

from 1.8 V to 5.5 V

The TPS6120x devices provide a power supply solution for products powered by either a single-cell, two-cell, or

three-cell alkaline, NiCd or NiMH, or one-cell Li-Ion or Li-polymer battery. It is also used in fuel cell or solar cell

powered devices where the capability of handling low input voltages is essential. Possible output currents are

depending on the input to output voltage ratio. The devices provides output currents up to 600 mA at a 5-V

output while using a single-cell Li-Ion or Li-Polymer battery, and discharge it down to 2.5 V. The boost converter

is based on a fixed frequency, pulse-width-modulation (PWM) controller using synchronous rectification to obtain

maximum efficiency. At low load currents, the converter enters the Power Save mode to maintain a high

efficiency over a wide load current range. The Power Save mode can be disabled, forcing the converter to

operate at a fixed switching frequency. The maximum average input current is limited to a value of 1500 mA. The

output voltage can be programmed by an external resistor divider, or is fixed internally on the chip. The converter

can be disabled to minimize battery drain. During shutdown, the load is completely disconnected from the

battery. The device is packaged in a 10-pin QFN PowerPAD™ package (DRC) measuring 3 mm x 3 mm.

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

PowerPAD is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 2007–2008, 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.