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RT9531 Datasheet High Efficiency Switching Mode Battery Charger

Manufacturer: Richtek

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Datasheet Details

Part number RT9531
Manufacturer Richtek
File Size 294.16 KB
Description High Efficiency Switching Mode Battery Charger
Download RT9531 Download (PDF)

General 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.

Overview

® RT9531 High Efficiency Switching Mode Battery Charger General.

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 Completion.
  • Auto Shutdown with Adapter Removal.
  • Only 10μA Battery Drain When Idle.
  • Avai.

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