TPS61097A

V

0.9 V to 3.3V

IN

VOUT

EN

L

GND

VIN

L1

C1

C2

V

+3.3V

OUT

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TPS61097A-33

SLVSCF2A – JANUARY 2014 – REVISED DECEMBER 2014

TPS61097A-33 Low-Input Voltage Synchronous-Boost Converter With Low Quiescent

Current

1 Features

3 Description

The TPS61097A-33 provides a power supply solution

1

•

Up to 93% Efficiency at Typical Operating

for products powered by either a single-cell, two-cell,

Conditions

or three-cell alkaline, NiCd, or NiMH, or one-cell Li-

•

Connection from Battery to Load via Bypass

Ion or Li-polymer battery. They can also be used in

Switch in Shutdown Mode

fuel cell or solar cell powered devices where the

capability of handling low input voltages is essential.

•

Typical Shutdown Current Less Than 5 nA

Possible output currents depend on the input-to-

•

Typical Quiescent Current Less Than 5

μA

output voltage ratio. The devices provide output

•

Operating Input Voltage Range

currents up to 100 mA at a 3.3-V output while using a

From 0.9 V to 5.5 V

single-cell Li-Ion or Li-Polymer battery. The boost

•

Power-Save Mode for Improved Efficiency at Low

converter is based on a current-mode controller using

synchronous

rectification

to

obtain

maximum

Output Power

efficiency. The maximum average input current is

•

Overtemperature Protection

limited to a value of 400 mA. The converter can be

•

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

disabled to minimize battery drain. During shutdown,

the battery is connected to the load to enable battery

2 Applications

backup of critical functions on the load. The device is

packaged

in

a

5-pin

SOT-23

package

(DBV)

•

MSP430 Applications

measuring 2.8 mm × 2.9 mm.

•

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

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

Device Information(1)

Products

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

Personal Medical Products

TPS61097A-33

SOT-23 (5)

2.90 mm × 2.90 mm

•

Fuel Cell and Solar Cell Powered Products

(1) For all available packages, see the orderable addendum at

the end of the datasheet.

•

PDAs

•

Mobile Applications

•

White LEDs

Typical Operating Application

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.