SW

VIN

EN

GND

VOUT

FB

L1

2.2 µH

C1

10 µF

R1

R2

C2

10 µF

0.7 V to 5.5 V

1.8 V to 5.5 V

TPS61099

C3

10 µF

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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. UNLESS OTHERWISE NOTED, this document contains PRODUCTION

DATA.

TPS61099, TPS610997

SLVSD88B – JULY 2016 – REVISED DECEMBER 2016

TPS61099x Synchronous Boost Converter with Ultra-Low Quiescent Current

1

1 Features

1

•

•

•

Operating Input Voltage from 0.7 V to 5.5 V

•

Adjustable Output Voltage from 1.8 V to 5.5 V

•

Fixed Output Voltage Versions Available

•

Minimum 0.8 A Switch Peak Current Limit

•

Regulated Output Voltage in Down Mode

•

True Disconnection During Shutdown

•

Up to 75% Efficiency at 10 µA Load with Fixed

Output Voltage Versions

•

Up to 93% Efficiency from 10 mA to 300 mA Load

•

6-Ball 1.23 mm x 0.88 mm WCSP Package

2 Applications

•

Memory LCD Bias

•

Optical Heart Rate Monitor LED Bias

•

Wearable Applications

•

Low Power Wireless Applications

•

Portable Products

•

Battery Powered Systems

3 Description

The TPS61099x is an synchronous boost converter

with 1-µA ultra-low quiescent current. It is designed

for products powered by alkaline battery, NiMH

rechargeable battery, Li-Mn battery or rechargeable

Li-Ion battery, for which high efficiency under light

load condition is critical to achieve long battery life

operation.

The TPS61099x boost converter uses a hysteretic

control topology to obtain maximal efficiency at

minimal quiescent current. It only consumes 1-µA

quiescent current under light load condition and can

achieve up to 75% efficiency at 10-µA load with fixed

output voltage version. It can also support up to 300-

mA output current from 3.3 V to 5 V conversion, and

achieve up to 93% at 200-mA load.

The TPS61099x also offers both Down Mode and

Pass-Through operations for different applications. In

Down Mode, the output voltage can still be regulated

at target value even when input voltage is higher than

output voltage. In Pass-Through Mode, the output

voltage follows input voltage. The TPS61099x exits

Down Mode and enters into Pass-Through Mode

The TPS61099x supports true shutdown function

when it is disabled, which disconnects the load from

the input supply to reduce the current consumption.

The TPS61099x offers both adjustable output voltage

version and fixed output voltage versions. It is

available in 6-ball 1.23-mm x 0.88-mm WCSP

Package.

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPS61099

WCSP (6)

1.23 mm x 0.88 mm

TPS61099x

WCSP (6)

1.23 mm x 0.88 mm

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

the end of this document.

Typical Application Circuit