ISL78600
Multi-Cell Li-Ion Battery Manager
Key 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
- 13b cell voltage measurement
- Pack voltage measurement accuracy ±100mV
- 14b 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
- AEC - Q100 Qualified
Description
The ISL78600 is a Li-ion battery manager IC that supervises up to 12 series connected cells. The part performs accurate monitoring, cell balancing and extensive system diagnostics functions. Three cell balancing modes are provided: Manual Balance mode, Timed Balance mode, and Auto Balance mode, which terminates balancing functions when a (host microcontroller specified) charge transfer value 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.
Applications
- Hybrid vehicle battery packs
