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FEATURES

APPLICATIONS

DESCRIPTION

TPS61097-33

V

0.9 V to 3.3 V

IN

VOUT

EN

L

GND

VIN

V

3.3 V

OUT

C1

C2

L1

TPS61097

LOW INPUT VOLTAGE SYNCHRONOUS BOOST CONVERTER

WITH LOW QUIESCENT CURRENT

• Up to 95% Efficiency at Typical Operating

• Overtemperature Protection

Conditions

• Small 2.8-mm x 2.9-mm 5-Pin SOT-23 Package

• Connection from Battery to Load via Bypass

Switch in Shutdown Mode

• MSP430 Applications

• Typical Shutdown Current Less Than 5 nA

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

• Typical Quiescent Current Less Than 5 µA

Alkaline, NiCd, NiMH, or Single-Cell Li-Battery

• Operating Input Voltage Range

Powered Products

From 0.9 V to 5.5 V

• Personal Medical Products

• Fixed Output Voltage Options

• Fuel Cell and Solar Cell Powered Products

From 1.8 V to 5.0 V

• PDAs

• Power-Save Mode for Improved Efficiency at

• Mobile Applications

Low Output Power

• White LEDs

The TPS61097 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. They can also be used in fuel cell or

solar cell powered devices where the capability of handling low input voltages is essential. Possible output

currents depend on the input-to-output voltage ratio. The devices provides output currents up to 100 mA at a

3.3-V output while using a single-cell Li-Ion or Li-Polymer battery. The boost converter is based on a

current-mode controller using synchronous rectification to obtain maximum efficiency. The maximum average

input current is limited to a value of 350 mA. The output voltage can be programmed by an external resistor

divider, or it is fixed internally on the chip. The converter can be disabled to minimize battery drain. During

shutdown, the battery is connected to the load to enable battery backup of critical functions on the load. The

device is packaged in a 5-pin SOT-23 package (DBV) measuring 2.8 mm × 2.9 mm.

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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 © 2009, 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.