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RT9478M - 24V Input for 2 to 4 Cell NVDC Buck-Boost Battery Charge Controller

Datasheet Summary

Description

The RT9478M is a 4-switch bidirectional buck-boost Narrow Voltage DC (NVDC) charge controller, designed to charge 2- to 4-cell batteries from a wide range of DC power sources, including USB-C Power Delivery (PD) sources, conventional AC-DC charger adapters, and mobile batteries.

Features

  • Programmable Frequency: 720kHz/800kHz/1.2MHz.
  • Wide Input Voltage Range from 3.8V to 24V.
  • Average Input Current Regulation (AICR).
  • Minimum Input Voltage Regulation (MIVR).
  • Support 10m and 5m Sensing Resister.
  • High Accuracy for 2% Battery Charge Current and 0.5% Voltage Regulation.
  • Wide Battery Regulation Voltage Range from 5V to 19.2V.
  • Support USB On-The-Go (OTG).
  • 5V.

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Datasheet preview – RT9478M

Datasheet Details

Part number RT9478M
Manufacturer Richtek
File Size 1.35 MB
Description 24V Input for 2 to 4 Cell NVDC Buck-Boost Battery Charge Controller
Datasheet download datasheet RT9478M Datasheet
Additional preview pages of the RT9478M datasheet.

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Full PDF Text Transcription

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RT9478M 24V Input for 2 to 4 Cell NVDC Buck-Boost Battery Charge Controller with PROCHOT, IBAT, and IBUS Pins, and SMBus 1 General Description The RT9478M is a 4-switch bidirectional buck-boost Narrow Voltage DC (NVDC) charge controller, designed to charge 2- to 4-cell batteries from a wide range of DC power sources, including USB-C Power Delivery (PD) sources, conventional AC-DC charger adapters, and mobile batteries. The device’s SMBus serial communication interface allows for flexible programming of various parameters, including charging current, charging voltage, and protection thresholds for overvoltage and undervoltage conditions affecting the input, battery, and system outputs.
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