ATA6870

Features 12-bit Battery-cell Voltage Measurement Simultaneous Battery Cells Measurement in Parallel Cell Temperature Measurement Charge Balancing Capability – Parallel Balancing of Cells Possible Integrated Power Supply for MCU Undervoltage Detection Less than 10 µA Standby Current Low Cell Imbalance Current (< 10 µA) Hot Plug-in Capable Interrupt Timer for Cycling MCU Wake-ups Cost-efficient Solution Due to Cost-optimized 30V CMOS Technology Reliable Communication between Stacked ICs Due to Level Shifters with Current Sources and Checksum Monitoring of Data Daisy-chainable – Each IC Monitors up to 6 Battery Cells – 16 ICs (96 Cells) per String – No Limit on Number of Strings Package QFN48 7 mm × 7 mm Li-Ion, NiMH Battery Measuring, Charge Balancing and Power-supply Circuit ATA6870 Preliminary Applications Battery Measurement, Supply and Monitoring IC for Li-ion and NiMH Battery Systems in Electric (EV) and Hybrid Electrical (HEV) Vehicles Benefits Highest Safety Level for Li-ion Battery Systems in Combination with ATA6871 Cost Reduction Due to Integrated Measurement Circuit and High Voltage Power-supply 1. Description www.DataSheet4U.com The ATA6870 is a measurement and monitoring circuit designed for Li-ion and NiMH multicell battery stacks in hybrid electrical vehicles. The ATA6870 monitors the battery-cell voltage and the battery-cell temperature with a 12-bit ADC. The circuit also provides charge-balancing capability for each batter...