The TPS61322xx is a synchronous boost converter with only 6.5-µA quiescent current. The
TPS61322xx 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 TPS61322xx also allows the use of small external inductor and capacitors. Higher than
90% efficiency is achieved at 10mA load from 1.5-V input to 2.2-V output conversion.
The TPS61322xx can also support high output current applications with an external
schottky diode. The TPS613222A 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
increment of 0.1 V. Thus it only needs two external components to get the desired output voltage.
The TPS61322xx also implements thermal shutdown protection function.
The TPS61322xx 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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