Li-Ion 64-Pin TQFP

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.

• Up to 12-cell voltage monitors, support Li-ion CoO2, Li-ion Mn2O4, and Li-ion FePO4 chemistries
• Board Level Cell voltage measurement accuracy ±1.5mV
• 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
• 2Mbps SPI
• AEC-Q100 qualified