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RT9451 Datasheet Switch-mode Single Cell Li-ion Battery Charger

Manufacturer: Richtek Technology

Overview: ® RT9451 Switch-Mode Single Cell Li-ion Battery Charger with USB OTG.

Datasheet Details

Part number RT9451
Manufacturer Richtek Technology
File Size 317.88 KB
Description Switch-Mode Single Cell Li-ion Battery Charger
Datasheet RT9451-RichtekTechnology.pdf

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

Key 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 automatically limited to the value set by the host. The charger can be configured to terminate charge based on user-selectab.

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RT9451 Distributor