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.
