Overview

Description

The ISL94212 Li-ion battery manager IC supervises up to 12 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 ISL94212 communicates to a host microcontroller via an SPI interface and to other ISL94212 devices using a robust, proprietary, two-wire Daisy Chain system. The ISL94212 is offered in a 64 Ld TQFP package and is specified for an operational temperature range of -40°C to +85°C.

Features

  • Up to 12-cell voltage monitors, support Li-Ion CoO2, Li-ion Mn2O4, and Li-ion FePO4 chemistries
  • Cell voltage measurement accuracy ±10mV
  • 13-bit cell voltage measurement
  • Pack voltage measurement accuracy ±180mV
  • 14-bit pack voltage and temperature measurements
  • Cell voltage scan rate of 19.5µs per cell (234µs to scan 12 cells)
  • Internal temperature monitoring
  • Up to four external temperature inputs
  • Robust daisy chain communications system
  • Integrated system diagnostics for all key internal functions
  • Hardwired and communications based fault notification
  • Integrated watchdog shuts down device if communication is lost
  • 7µA shutdown current: Enable = VSS
  • 2Mbps SPI

Applications

Applications

  • Hybrid, electric vehicle battery packs
  • Battery backup systems
  • E-Moto; E-Bike

Documentation

Title Type Date
PDF4.46 MB
Datasheet
PDF509 KB
Application Note
PDF397 KB
Application Note
PDF4.91 MB日本語
Brochure
PDF615 KB
Guide
PDF465 KB
Manual - Software
PDF1.98 MB
Related Files:
Manual - Software
PDF233 KB
Product Change Notice
PDF168 KB
Product Change Notice
PDF263 KB 简体中文
White Paper
PDF451 KB 简体中文
White Paper
PDF451 KB 简体中文
White Paper

Design & Development

Sample Code

Sample Code

Title Type Date
ZIP474 KB
Sample Code

Boards & Kits

Boards & Kits

Models

Support