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RAA489118

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Buck-Boost Battery Charger with SMBus Interface for General 30V and USB PD EPR

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Overview

The RAA489118 is a buck-boost charger that supports a 30V input and 30V battery. It provides charging and protection features for power tools, portable vacuums, battery-powered lawn mowers, and power banks, and provides additional system bus regulation for notebooks. It is compatible with any USB-C interface platform, including USB Power Delivery (USB PD) Extended Power Range (EPR). The advanced Renesas R3™ technology ensures highly efficient light-load operation and fast transient response.

In charging mode, the RAA489118 accepts input power from a wide range of DC power sources, such as conventional AC/DC charger adapters, USB PD ports, and travel adapters, safely charging battery packs with up to 7 serially connected cells up to 30V. The device can operate with only a battery, only an adapter, or both connected. It supports reverse buck, reverse boost, or reverse buck-boost operation to the input port from 2-cell to 7-cell batteries.

The RAA489118 offers programming resistor options, including autonomous charging, maximum output voltages, and adapter current limits. Additionally, it provides serial communication for programming many critical parameters, enabling a customized solution.

RAA489118 Typical Application Diagram
RAA489118 Typical Application Diagram
  • Buck-boost charger for 2 to 7 cells up to 30V batteries
  • Optional BFET
  • Input voltage range: 3.9V to 30V (no dead zone)
  • System output voltage: 2.4V to 30.8V
  • Autonomous charging option (automatic completion of charging)
  • Pass-through mode in a forward direction
  • Adapter current and battery current monitor (AMON/BMON)
  • Trickle charging of depleted battery
  • Reverse buck, boost, and buck-boost operation from battery
  • Battery Ship mode option
  • 4×4 32 Ld TQFN package compatible with the ISL9238 and RAA489108 products

Documentation

Featured Documentation
Type Title Date
Datasheet
RAA489118 Datasheet
PDF 4.81 MB
1 item

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Videos & Training

Renesas introduces an industry-leading 48V USB Power Delivery (PD) Extended Power Range (EPR) solution with two key products: the USB Type-C® port controller RAA489400, supporting USB PD VBUS power up to 48V/5A, and the buck-boost battery charger RAA489118, offering a 30V input voltage.

News & Blog Posts

News
Dec 10, 2024
Renesas Introduces USB PD EPR Solution Featuring Type-C Port Controller and Buck-Boost Battery Charger