RENESAS ISL94212INZ

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

• 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 = V₅₅
• 2Mbps SPI

• Light electric vehicle (LEV); E - Moto; E - Bike
• Battery backup systems; Energy Storage Systems (ESS)
• Solar Farms
• Portable and semi - portable equipment