TPS61322 6.5-µA Quiescent current, 1.8-A switch current boost converter

1 Features

• Operating input voltage range: 0.9 V to 5.5 V

• Output voltage range: 1.8 V to 5.5 V

• 6.5-µA Quiescent current into VOUT pin

• ±3% Output voltage accuracy over temperature

• Minimum switch peak-current limit:

– 0.42 A for TPS613223A

– 0.5 A for TPS61322

– 0.75 A for TPS613221A and TPS613226A

– 1.10 A for TPS613222A

• Higher than 90% efficiency at 10-mA load from

1.5-V to 2.2-V conversion

• Thermal shutdown protection

• 2.9-mm × 1.3-mm 3-pin SOT package and 2.9-mm

× 1.6-mm 5-pin SOT package

• Create a custom design using the TPS61322 with

the WEBENCH® Power Designer

2 Applications

• 1-cell to 3-cell Alkaline or NiMH battery-powered

applications

• Gaming control

• Tablet

• Portable electronics

• Medical equipment

3 Description

The TPS61322 is a synchronous boost converter

with only 6.5-µA quiescent current. The TPS61322

provides a power-supply solution for products

powered by alkaline battery, NiMH rechargeable

battery, or one-cell Li-ion battery. The boost

converter is based on a hysteretic control topology

using synchronous rectification to obtain maximum

efficiency

at

minimal

quiescent

current.

The

TPS61322 also allows the use of small external

inductor and capacitors. Higher than 90% efficiency

is achieved at 10-mA load from 1.5-V input to 2.2-V

output conversion.

The TPS61322 can also support high output current

applications with an external schottky diode. The

TPS613222A provides higher than 500-mA output

current capability at 3-V input voltage to 5-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. Thus, it only needs two external components to

get the desired output voltage. The TPS61322 also

implements thermal shutdown protection function.

The TPS61322 is available in a 2.9-mm × 1.3-mm

3-pin SOT package or a 2.9-mm × 1.6-mm 5-pin SOT

package.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPS61322

SOT-23 (3)

2.90 mm × 1.30 mm

SOT-23 (5)

2.90 mm × 1.60 mm

(1)

For all available packages, see the orderable addendum at

the end of the data sheet.

TPS61322xx

Battery

SW

VOUT

L1

VOUT

GND

C1

Typical Application Circuit

TPS61322

SLVSDY5E – JANUARY 2018 – REVISED FEBRUARY 2024

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.