L9963 ASSP Battery Management System

STMicroelectronics' L9963 is a Li-ion battery monitoring and protection chip for high-reliability automotive applications and energy storage systems. Up to 14 stacked battery cells can be monitored to meet the requirements of 48 V and higher voltage systems.

Features

• AEC-Q100 qualified
• Measures 4 to 14 cells in series, with 0 µs desynchronization delay between samples
• Coulomb counter supporting pack overcurrent detection in both ignition on and off states
• Fully synchronized current and voltage samples
• 16-bit voltage measurement with max. error of ±2 mV in the 1.7 V to 4.7 V range, in whole operating temp range
• Intelligent diagnostic routine providing automatic failure validation
• Robust hot-plug performance
• No Zeners needed
• Full ISO26262 compliant, ASIL-D systems ready