RT9531 Datasheet - Richtek

RT9531 - High Efficiency Switching Mode Battery Charger

The RT9531 is a PWM switch mode battery charger controller to fast charge single or multiple Li-Ion, NiMH and NiCd batteries, using constant current or constant voltage control. Maximum current can be easily adjusted by external resistor. The constant voltage output can support up to 4 Li-Ion cells .

RT9531 Features

* Fast Charging for Li-Ion, NiMH and NiCd Batteries

* Preset Battery Voltages : 4.2V

* High Efficiency : Up to 95%

* Precision 0.5% Charging Voltage Accuracy

* 5% Charging Current Accuracy

* Charging Current Adjusted by Resistor

* 0.4V Dropout Voltage

* Input Current

RT9531-Richtek.pdf