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TPS61322
  • TPS61322
  • TPS61322
  • TPS61322

TPS61322

ACTIVE

6-uA Quiescent Current, 1.8-A Switch Current Boost Converter

Texas Instruments TPS61322 Product Info

1 April 2026 4

Parameters

Rating

Catalog

Topology

Boost

Vin (max) (V)

5.5

Vin (min) (V)

0.9

Vout (max) (V)

5

Vout (min) (V)

2.2

Switch current limit (typ) (A)

1.8

Features

Light-load efficiency, Synchronous rectification

Operating temperature range (°C)

-40 to 125

Iq (typ) (A)

0.000006

Duty cycle (max) (%)

90

Package

SOT-23 (DBV)-5-8.12 mm² 2.9 x 2.8

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
  • 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

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.

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