TPS613223ADBVR

6µA 静态电流 1.8A 开关电流升压转换器

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1 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

2 Applications

• 1-cell to 3-cell Alkaline or NiMH battery-powered applications

• Gaming control

• Tablet

• Portable electronics

• Medical equipment

3 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.