The LT4356 overvoltage protection regulator, with overcurrent protection and inrush current limiting, provides solid front-end protection for safety critical downstream components. The input operating range of 4 to 80 V enables continuous operation during cold-crank conditions, where the battery voltage can be as low as 4 V.

Features include an adjustable output clamp voltage, adjustable fault timer, and fault output indication. Housed in 12-pin DFN and 10-pin MSOP packages, the part can handle transient voltages of 100 V and higher. In addition, the part provides reverse input protection to ¨C30 V without damage to itself or the load.