TPS61322x

Battery

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22uF

2.2uH

(optional)

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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. ADVANCE INFORMATION for pre-production products; subject to

change without notice.

TPS61322

SLVSEB2 – SEPTEMBER 2017

TPS61322x 6.5-µA Quiescent Current, 1.8-A Switch Current Boost Converter

1

1 Features

1

•

Operating Input Voltage Range: 0.9 V to 5.5 V

•

Output Voltage Range: 1.8 V to 5.5 V

•

•

±3% Output Voltage Accuracy Over Temperature

•

Minimum Switch Peak Current Limit:

–

0.45 A for TPS61322

–

0.6 A for TPS613221

–

1.2 A for TPS613222

•

Higher Than 85% efficiency at 10 mA Load from

1.2-V to 2.2-V Conversion

•

Thermal Shutdown Protection

•

2.9-mm x 1.3-mm 3-pin SOT Package

2 Applications

•

1-cell to 3-cell Alkaline or NiMH Battery Powered

Applications

•

Gaming Control

•

Tablet

•

Portable Consumer

•

Medical Equipment

3 Description

The TPS61322x is a synchronous boost converter

with only 6.5-µA quiescent current. TPS61322x

provides

a

power-supply

solution

for

products

powered by alkaline battery, NiMH rechargeable

battery, or one-cell Li-Ion battery. The minimum

current limit is 0.45 A for TPS61322, 0.6 A for

TPS613221 and 1.2 A for TPS613222. The boost

converter is based on a hysteretic control topology

using synchronous rectification to obtain maximum

efficiency at minimal quiescent currents. Higher than

85% efficiency can be achieved at 10mA load from

1.2-V input to 2.2-V output.

TPS61322x

can

also

support

non-synchronous

operation for high output load applications. The

TPS613222 provides higher than 500 mA output

current capability at 3.0 V input voltage to 5.0 V

output voltage conversion with an external Schottky

diode in parallel with the internal rectifier FET.

The output voltage is set internally to a fixed output

voltage from 1.8 V to 5.5 V in increments of 0.1 V.

TPS61322x is packaged in a 2.9-mm × 1.3-mm 3-pin

SOT package.

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPS61322x

3 pin SOT

2.9-mm x 1.3-mm

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

the end of the data sheet.

Typical Application Circuit