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 forTPS613221A and TPS613226A
- 1.10 A for TPS613222A
- Higher than 90% efficiency at 10-mAload from 1.5-V to 2.2-V conversion
- Thermal shutdownprotection
- 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 theWEBENCH? Power Designer
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DescriptionThe TPS61322 is a synchronous boost converter with only 6.5-μA quiescent current. TheTPS61322 provides a power-supply solution for products powered by alkaline battery, NiMHrechargeable battery, or one-cell Li-ion battery. The boost converter is based on a hystereticcontrol topology using synchronous rectification to obtain maximum efficiency at minimal quiescentcurrent. The TPS61322 also allows the use of small external inductor and capacitors. Higher than90% 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 schottkydiode. The TPS613222A provides higher than 500-mA output current capability at 3-V input voltage to5-V output voltage conversion with an external Schottky diode in parallel with the internalrectifier FET.
The output voltage is set internally to a fixed output voltage from 1.8 V to 5.5 V inincrements 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-mm5-pin SOT package.
