Maxim Integrated’s High-Voltage Battery Sensor Extends Battery Life and Supports Highest Automotive Safety Rating

Offering a full suite of proprietary integrated ISO-26262 diagnostic features, the MAX17823 maximizes electric and hybrid electric vehicle driving range while ensuring battery and fuel cell safety and reliability.

A proprietary, differential UART communications link is automotive EMC-hardened, enabling uninterrupted cell monitoring during battery pack service disconnect and eliminating costly digital isolators. An innovative shutdown feature safely enters all daisy-chain devices into submicro-ampere sleep mode when a host microcontroller loses 12V power. ASIL-D (Automotive Safety Integrity Level “D”, per ISO-26262) compliance is achieved and maintained with unmatched, accurate 96-cell, 100 measurements-per-second performance. The 96-cell hot-plug immunity ensures highest reliability during BMS (battery management system) manufacturing.