Features

• AEC-Q100 qualified

• Measures 4 to 14 cells in series, with 0 μs 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 ADC with maximum error of ±2 mV in the [0.5 – 4.3] V range, after

soldering, in [-40; +105] °C Tj range

• 2.66 Mbps isolated serial communication with regenerative buffer, supporting

dual access ring. Less than 4 us latency between start of conversion of the 1st

and the 31st device in a chain. Less than 4 ms to convert and read 96 cells in a

system using 8 L9963E and L9963T transceiver. Less than 8 ms to convert and

read 210 cells in a system using 15 L9963E and L9963T transceiver. Less than

16 ms to convert and read 434 cells in a system using 31 L9963E and L9963T

transceiver. Supports both XFMR and CAP based isolation

• 200 mA 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 mA (VCOM) and

50 mA (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 compliant, ASIL-D systems ready