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RT9451

Part Number	RT9451
Manufacturer	Richtek Technology
Description	Switch-Mode Single Cell Li-ion Battery Charger
Published	May 27, 2016
Detailed Description	® RT9451 Switch-Mode Single Cell Li-ion Battery Charger with USB OTG General Description The RT9451 integrates a high ...
Datasheet	RT9451 PDF File

Overview

® RT9451 Switch-Mode Single Cell Li-ion Battery Charger with USB OTG General Description The RT9451 integrates a high efficiency USB friendly switch mode charger with On-The-Go (OTG) support for single cell Li-ion and Li-polymer batteries, D+D− detection, and a 50mA LDO regulator into a single chip.
The charger features a synchronous 375kHz PWM controller with integrated power MOSFETs, input current sensing and regulation, Minimum Input Voltage Regulation (MIVR), high accuracy charge current and voltage regulation, and charge termination.
It charges the battery in three phases : low current pre-charge, constant current fast charge, and constant voltage trickle charge.
The input current is ...

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