RAA489118 Buck-Boost Charger Evaluation Boards
The RTKA489118DE0000BU and RTKA489118DE0010BU evaluation boards are designed to evaluate the performance of the RAA489118. The default values for maximum and minimum...
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Overview
Description
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.
Features
- 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
Comparison
Applications
- Standalone battery charging for 2- to 7-cell batteries, including those used in power tools, portable vacuums, battery-powered lawn mowers, and drones
- Suitable for 2- to 7-cell tablets, ultrabooks, notebooks, power banks, and any USB-C interface portable device requiring batteries
Documentation
Featured Documentation
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Design & Development
Boards & Kits
140W USB Type-C Battery System Reference Design for 2 to 7S Li-ion
This is a single port reference design for implementing battery systems with 2 to 7 cells connected in series. It supports two modes: one where power is supplied solely...
100W USB Type-C Battery System Reference Design for 2 to 7S Li-ion
This is a single-port reference design for implementing battery systems with 2 to 7 cells connected in series. It supports two modes: one where power is supplied solely...
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.
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