Overview

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.

ISL94212 Functional Diagram
ISL94212 Functional Diagram
  • 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

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

Documentation

Design & Development

ISL94212EVKIT1Z Battery Manager Eval Kit

ISL94212EVKIT1Z

Evaluation
Learn More

Multi-Cell Li-Ion Battery Manager Evaluation Kit

The ISL94212EVKIT1Z is an evaluation kit that facilitates the use of the ISL94212 Li-ion battery manager IC. The ISL94212 monitors cell voltage and temperature. It...

Featured Documents:
ISL94212EVKIT1Z User Guide

ECAD Models

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Product Options

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    ISL94212INZ
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    		TQFP Tray 3 6.537 Get Samples,
    ISL94212INZ-T
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    		 TQFP Reel 3 7.025 Get Samples,
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