DESCRIPTION

· The Atmel ATA6870 is a battery measurement, charge balancing, and power-supply IC designed for Li-ion and NiMH battery systems in Electric (EV) and Hybrid Electrical (HEV) Vehicles.

FEATURES

· 12-bit battery-cell voltage measurement
· Simultaneous parallel battery cells measurement
· Cell temperature measurement
· Charge balancing capability with parallel cell balancing
· Integrated MCU power supply
· Undervoltage detection
· Standby current less than 10µA
· Low cell imbalance current (<10µA)
· Hot plug-in capable
· Interrupt timer for MCU wake-ups
· Cost-efficient 30V CMOS technology
· Reliable communication with level shifters and checksum monitoring
· Daisy-chainable
· Monitors up to 6 cells per IC, 16 ICs (96 cells) per string, with no limit on strings
· QFN48 7mm × 7mm package

APPLICATIONS

· Battery measurement, supply, and monitoring in Li-ion and NiMH battery systems for EVs and HEVs.

BENEFITS

· Highest safety level for Li-ion battery systems when combined with Atmel® ATA6871
· Cost reduction through integrated measurement circuit and high-voltage power supply.