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STW4102 - Dual USB/wall adapter Li-ion battery charger

General Description

The STw4102 is a standalone constant current constant voltage (CCCV) linear charger specifically designed for Li-ion batteries.

Key Features

  • Constant current www. DataSheet4U. com linear charger.
  • constant voltage (CCCV) QFN 24 (Plastic micropackage) Pin connections (top view).

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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STw4102 Dual USB/wall adapter Li-ion battery charger with gas gauge Features ■ Constant current www.DataSheet4U.com linear charger ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ constant voltage (CCCV) QFN 24 (Plastic micropackage) Pin connections (top view) PWRDETECTN TEST EOCHG BATTSENSE BATT SENSE 24 23 22 21 20 19 Common or separate USB/wall adapter inputs Fast charge current control up to 1 A for wall adapter and up to 500 mA for USB Support for currents higher than 1 A using external components Programmable charge voltage (4.1 V, 4.2 V, 4.3 V, 4.35 V) with 1% accuracy Thermal regulation Trickle charge mode at low battery voltage Wall adapter voltage up to 16 V Battery overvoltage protection at 4.