RAA489204

Overview

Renesas’ daisy chainable 14-cell battery front-end is ideal for high voltage, stacked battery systems. The RAA489204 is a 14-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. The part provides accurate monitoring, cell balancing, and extensive system diagnostics functions. Cell balancing can be conducted either internally or externally, with 10V gate pins for external balancing.

The RAA489204 Li-ion battery manager IC supervises up to 14 series connected cells. The part provides accurate monitoring, cell balancing, and extensive system diagnostics functions. Three cell balancing modes are provided: Manual Balancing mode, Timed Balancing mode, and Auto Balance mode. The Auto Balance mode terminates balancing functions when a charge transfer value has been met. The RAA489204 communicates to a host microcontroller via an SPI interface and to other RAA489204 devices using a robust, proprietary, two-wire daisy chain system. The RAA489204 is offered in a 64 Ld TQFP package and is specified for an operational temperature range of -40 °C to +85 °C.

Robust daisy-chain communications system
- Daisy-chain supports both capacitive and transformer connected communications
Up to 14-cell voltage monitors, support Li-ion CoO2, Li-ion Mn2O4, and Li-ion FePO4 chemistries
Cell voltage measurement accuracy ±10mV
14-bit voltage and temperature measurements
Internal temperature monitoring
Up to six external temperature inputs
- Integrated system diagnostics for all key internal functions
Hardwired and communications based fault notification
Integrated watchdog shuts down the device if communication is lost
10µA shutdown current: Enable = VSS
2.5Mbps SPI

UPS
Battery-based generators
Energy Storage systems
E-Mobility and E-Bikes

Documentation

Design & Development

RTKA489204DK0000BU

Evaluation

Learn More

Multi-Cell Daisy-Chainable Li-Ion Battery Manager Evaluation Kit

The RTKA489204DK0000BU evaluation kit includes eval board, dongle, cables and GUI and is used to evaluate the features of the RAA489204 14-cell battery front end (BFE)...

Featured Documents:

RTKA489204DK0000BU Evaluation Kit Manual

US134-118VBTPKEV1Z

Evaluation

Learn More

20-28 Cell Battery Management System up to 118V Evaluation Board

The US134-118VBTPKEV1Z board demonstrates a proof of concept (POC) solution for a 20-28 cell battery management system (BMS). The board supports a wide input range of...

Featured Documents:

US134-118VBTPKEV1Z 20-28 Cell Battery Management System up to 118V User's Guide

Available on Lab on the Cloud

Use our PC-based GUI to instantly start configuring and testing designs in our virtual lab, no physical board needed.

Launch Lab on the Cloud

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

Explore ECAD Models

Product Options

Processing table

	Pkg. Type	Carrier Type	Moisture Sensitivity Level (MSL)	Price (USD) \| 1ku	Buy / Sample
(2) Active (0) Obsolete / NRND / LTB	TQFP	Reel Tray	3	Maximum Price estimate for 1,000 units; pricing is subject to change. Minimum Price estimate for 1,000 units; pricing is subject to change.	Buy / Quote Get Samples
Part Number	Logical Operator	Logical Operator	Logical Operator		Logical Operator
RAA4892042GFT#AA0 circleActive memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model Samples Available Buy Now	TQFP	Tray	3		Get Samples, Buy / Quote
RAA4892042GFT#HA0 circleActive memoryPkg. Info spa Env. Documentation view_in_ar PCB Symbol, Footprint, and 3D Model Samples Available Buy Now	TQFP	Reel	3	10.02	Get Samples, Buy / Quote

Tips for Using This Parametric Table:

Hide Filters button in header: Collapse or expands filters
Column sort buttons in header: Sort Column alphabetically / numerically descending or ascending
Reset button in header: Reset all filters to the page default
Full Screen button in header: Expand the table to full screen view (user must close out of full screen before they can interact with rest of page)
Export button in header: Export the filtered results of the table to an Excel document
Filter parts search bar in header: Type to filter table results by part number
Hide column button in column headers: Select to hide columns in table
AND / OR toggle switches in header: Toggles the logic of this particular filter to be “AND” or “OR” logic for filtering results
Multiselect checkboxes at beginning of each row in table: Select these checkboxes to compare products against each other
Document icon next to product name in row: View the featured document for this product
Chip icon next to the right of the document icon in row: View the block diagram for this product
Cart icon to the right of the chip icon: Indicates that samples are available for this product

Videos & Training

RAA48920x Multi-Cell Battery Front End Family

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.

Video List

RAA48920x Multi-Cell Battery Front End Family

News & Blog Posts

How Daisy-Chained Battery ICs Efficiently Monitor and Protect High Voltage Batteries	Blog Post	Nov 11, 2021
Renesas Unveils New Multi-Cell Battery Front End Family for High-Cell Count, High-Voltage Systems	News	Nov 11, 2021

Microcontrollers & Microprocessors

Applications

Design Resources

Support

Sample & Buy

About

Language

Multi-Cell Daisy-Chainable Li-Ion Battery Manager

Overview

Documentation