O2 Micro, Incorporated

Ya-Tung Kao

Wei Zhang

Guoxing Li

Han-Jung Kao

A charger includes a detection pin, a voltage divider, and a comparator. The detection pin can couple the charger to a power source via a first data line. The voltage divider and the comparator are coupled to the detection pin. The voltage divider divides a power voltage provided by the power source and provides a detection voltage at the detection pin. The comparator compares the detection voltage with a predetermined reference voltage and identifies a type of the power source according to the comparing.

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Taipei, Taiwan

Ya-Tung Kao