The ISL78600 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 incorporated: Manual Balance mode,

Timed Balance mode, and Auto Balance mode. The auto balance

mode terminates balancing functions when a charge transfer

value specified by the host microcontroller has been met.

The ISL78600 communicates to a host microcontroller via an SPI

interface and to other ISL78600 devices using a robust,

proprietary, two-wire Daisy Chain system.

The ISL78600 is offered in a 64 Ld TQFP package and is

specified for operation at a temperature range of -40°C to

+105°C.

Features

• Up to 12-cell voltage monitors, support Li-ion CoO2, Li-ion

Mn2O4, and Li-ion FePO4 chemistries

• Cell voltage measurement accuracy ±2.5mV

• 13-bit cell voltage measurement

• Pack voltage measurement accuracy ±100mV

• 14-bit pack voltage and temperature measurements

• Cell voltage scan rate of 19.5µs per cell (234µs to scan

12 cells)

• Internal and external 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 (HEV), Plug-in Hybrid Electric Vehicle

(PHEV) and Electric Vehicle (EV) battery packs

• Electric motorcycle battery packs

• Backup battery and energy storage systems requiring high

accuracy management and monitoring

• Portable and semiportable equipment