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RT9455 - Switch-Mode Single Cell Li-Ion Battery Charger

Datasheet Summary

Description

The RT9455 is a switch-mode single cell Li-Ion/Li-Polymer battery charger for portable applications.

It integrates a synchronous PWM controller, power MOSFETs, input current sensing, high accuracy voltage regulation and charge termination circuits.

Features

  • USB On-The-Go (OTG). The RT9455 optimizes the charging task by using a control algorithm to vary the charge rate via different modes, including pre-charge mode, fast charge mode, and constant voltage mode. The key charge parameters can be programmed via the I2C interface. The RT9455 resumes the charge cycle whenever the battery voltage falls below an internal threshold and automatically enters sleep mode when the input power supply is removed. Other features include under-voltage protection, ove.

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Datasheet preview – RT9455

Datasheet Details

Part number RT9455
Manufacturer Richtek
File Size 286.38 KB
Description Switch-Mode Single Cell Li-Ion Battery Charger
Datasheet download datasheet RT9455 Datasheet
Additional preview pages of the RT9455 datasheet.

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Full PDF Text Transcription

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® RT9455 Switch-Mode Single Cell Li-Ion Battery Charger with USB-OTG General Description The RT9455 is a switch-mode single cell Li-Ion/Li-Polymer battery charger for portable applications. It integrates a synchronous PWM controller, power MOSFETs, input current sensing, high accuracy voltage regulation and charge termination circuits. The RT9455 also features USB On-The-Go (OTG). The RT9455 optimizes the charging task by using a control algorithm to vary the charge rate via different modes, including pre-charge mode, fast charge mode, and constant voltage mode. The key charge parameters can be programmed via the I2C interface.
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