Texas Instruments TPS61322xx 1.8A Synchronous Boost Converters use only 6.5µA of quiescent current. The TPS61322xx provides a power-supply solution for products powered by an 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 1.5V input to 2.2V output conversion. The TPS61322xx can also support high output current applications with an external Schottky diode. The TPS613222A provides higher than 500mA output current capability at 3.0V input voltage to 5.0V output voltage conversion with an external Schottky diode in parallel with the internal rectifier FET.
Feature
- 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
