Overview
Description
Renesas’ wholly integrated 16-cell battery front end is ideal for challenging industrial environments. The RAA489206 is a 16-cell battery front end (BFE) IC, an essential component of any battery management system (BMS), which periodically scans battery status and the operating environment to optimize battery life and prevent catastrophic failures. A differential multiplexer and 16-bit ADC allows for accurate monitoring of cell voltage, temperature, and load current for management of the overall state of the battery pack.
The RAA489206 supports I2C and SPI protocols allowing customers to connect a microcontroller (MCU) in a proprietary battery management solution. Low current consumption with an average IDLE mode current of 200µA and a SHIP mode current of less than 18µA maximizes the storage and discharge life of a battery pack.
The RAA489206 features internal cell balancing circuitry that provides 8mA of balance current per cell. External cell balancing for higher currents is also supported. This 16-cell high voltage BFE IC is offered in an efficient 64-lead QFN package with a thermal pad.
Features
- Wholly integrated 16S front-end for sophisticated high voltage batteries
- Rugged monolithic device tested to withstand hot plug events and with higher ESD ratings
- Both internal and external cell balancing supported via internal FETs and dedicated FET driver pins
- EVK and GUI for easy out of the box evaluation and development
- Total BOM cost and component count reduced >$1 savings and >20% board space
- High accuracy ADC for VCELL and IPACK
- Supports I2C, and SPI communications
- Integration shortens development time by elimination of component selection, integration, and testing
- Charging time reduced and up-time maximized by seamless control of external cell balancing FETs
- High hot plug rating: 62V
- Charge/load wakeup detection circuitry
- 4-pin GPIO port
- Integrated 3.3V regulator
- 16-bit VCELL and IPACK measurements
Comparison
Applications
Design & Development
Sample Code
Boards & Kits
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.
Support
Support Communities
Get quick technical support online from Renesas Engineering Community technical staff.
Support Communities
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Questions about temperature measurements RAA489206
Hello!I used RAA489206 (voltage, current and temperatures monitoring only) in my project (automotive) with LiFePo batteries.My project needs to work over a wide temperature range.During debugging, I discovered a problem: with a discharge current of more than approximately 110 mA (with a voltage on the shunt less ...
Mar 27, 2024 -
Can I use RAA489206 Battery management IC for application with LFP cell chemistry battery?
I am willing to use RAA489206 battery management IC for LFP cell chemistry battery. The product detail for the following BMIC states that it can be used for multicell chemistry , so does it cover LFP chemistry cell batteries?
Mar 7, 2024 -
Unexpected Power Consumption and Hot Resistor in 6-Cell BMS with RAA489206
Hello, I'm currently developing a Battery Management System (BMS) using the RAA489206 IC in combination with an STM32F303CB microcontroller. While I’ve followed the Renesas reference design as a baseline, my configuration is set up for a 6-cell system (instead of the standard 16-cell), giving a nominal ...
May 8, 2025
Videos & Training
An overview of how the Renesas multi-cell battery front devices streamline development for high-cell count, high-voltage systems with flexible cell balancing and lower system costs. Visit renesas.com/bfe for more details.