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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

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.