MC33772BSA2AE [NXP]

The MC33772 and MC33664 are integrated battery monitoring devices for automotive and industrial mission-critical applications. They support ISO 26262 SafeAssure functional safety with functional verification and diagnostics. The solution addresses centralized, distributed daisy chain, and high-speed daisy chain topologies, compatible with 14 V Li-ion batteries using one AFE and optional high-speed isolated or SPI communications. Key features include isolated 2 Mbps differential communication or 4 Mbps SPI, up to six cell voltage measurements, synchronized cell voltage/current measurement with coulomb counting, seven ADC/GPIO/temperature sensor inputs, onboard 300 mA passive cell balancing with diagnostics, low-power modes, and a 48-pin LQFP package. It enables fast data acquisition (0.86 ms for pack controller) and individual cell impedance determination in one shot (113 µs).