ISL94212
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 ±10mV
- Cell voltage scan rate of 19.5μs per cell (234μs to scan 12 cells)
- 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
Description
The ISL94212 is a Multi-cell 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 mode, timed mode and an auto-balance mode which terminates balancing functions when a (host microcontroller specified) charge transfer value has been met.
The ISL94212 communicates to a host microcontroller via an SPI interface and to other ISL94212s using a robust, proprietary, two-wire Daisy Chain system.
The ISL94212 is offered in a 64 Ld TQFP package and is specified over an industrial temperature range of -40°C to +85°C.
Applications
- Hybrid, electric vehicle battery packs
- Battery backup systems
- E-Moto; E-Bike
