RT9531 Datasheet PDF - Richtek High Efficiency Switching Mode Battery Charger Specs

RT9531 - High Efficiency Switching Mode Battery Charger

Datasheet Summary

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.

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.

Datasheet Details

Part number	RT9531
Manufacturer	Richtek
File Size	294.16 KB
Description	High Efficiency Switching Mode Battery Charger
Datasheet	RT9531 Datasheet
Additional preview pages of the RT9531 datasheet.

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Full PDF Text Transcription

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® RT9531 High Efficiency Switching Mode Battery Charger 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. A third control loop limits the input current drawing from the adapter during charging. This allows simultaneous operation of the equipment and fast battery charging without over loading to the adapter. The RT9531 can charge batteries from 2.5V to 4.2V with dropout voltage as low as 0.4V.

Published: May 27, 2016 |