LTC4001EUF#PBF

LINEAR TECHNOLOGY  LTC4001EUF#PBF  芯片, 锂电池充电控制器, 同步降压, 2A

The is a 2A Li-ion Battery Charger intended for 5V wall adapters. It utilizes a 1.5MHz synchronous buck converter topology to reduce power dissipation during charging. Low power dissipation, an internal MOSFET and sense resistor allow a physically small charger that can be embedded in a wide range of handheld applications. The LTC4001 includes complete charge termination circuitry, automatic recharge and a ±1% 4.2V float voltage. Input short-circuit protection is included so no blocking diode is required. Battery charge current, charge timeout and end-of-charge indication parameters are set with external components. Additional features include shorted cell detection, temperature qualified charging and overvoltage protection.

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Low power dissipation

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No external MOSFETs

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Sense resistor or blocking diode required

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Remote sensing at battery terminals

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Programmable charge termination timer

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Preset 4.2V float voltage with ±0.5% accuracy

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Programmable charge current detection/termination

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Automatic recharge

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Thermistor input for temperature qualified charging

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Compatible with current limited wall adapters