RT9531 Description
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 with 0.5% accuracy.
RT9531 Key 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 Limit Maximizes Charging Rate
- 475kHz Switching Frequency
- Flag Indicates Li-Ion Charge pletion