L9963 Datasheet | STMicroelectronics

Data brief Automotive chip for battery management applications Features Product status link L9963 Product label Product summary Order code Package Packing TQFP64EP (exposed pad down) Tray - AEC-Q100 qualified - Measures 4 to 14 cells in series, with 0 us desynchronization delay between samples. Supports also busbar connection without altering cell results - Coulomb counter supporting pack overcurrent detection in both ignition on and off states. Fully synchronized current and voltage samples - 16-bit voltage measurement with maximum error of ±2 m V in the [1.7 - 4.7] V range, in whole operating temp range - 2.66 Mbps isolated serial munication with regenerative buffer, supporting dual access ring. Less than 2 µs latency between start of conversion of the 1st and the 15th device in a chain. Less than 4 ms to convert and read 96 cells in a system using 8 L9963. Supports both transformer and capacitive based isolation - 200 m A passive internal balancing current for each cell in both normal and silent-balancing mode. Possibility of executing cyclic wake-up measurements. Manual/Timed balancing, on multiple channels simultaneously; Internal/external balancing - Fully redundant cell measurement path, with ADC Swap, for enhanced safety and limp home functionality - Intelligent diagnostic routine providing automatic failure validation. Redundant fault notification through both SPI Global Status Word (GSW) and dedicated FAULT line - Two 5 V regulators supporting external load connection with 25 m A (V) and 50 m A (VTREF) current capability - 9 GPIOs, with up to 7 analog inputs for NTC sensing - Robust hot-plug performance. No Zeners needed in parallel to each cell - Full ISO26262 pliant, ASIL-D systems ready - TQFP64EP package Application - 48 V and high-voltage battery packs - Backup energy storage systems and UPS - E-bikes, e-scooters - Portable and semi-portable equipment Description The L9963 is a Li-ion battery monitoring and protection chip...