The LTC7860 has an input voltage operating range of 3.5V to 60V, which can be extended with external circuitry up to 200V and higher. A programmable fault timer limits the time spent in overvoltage mode and keeps the switching surge stopper below a safe peak operating temperature when power loss is at its highest levels. The fault timer reduces system cost and size by optimizing component selection for normal mode rather than overvoltage transient and fault conditions. In MIL-STD-1275 applications the LTC7860 protects devices operating from a 28V vehicle power bus which can reach as high as 100V for up to 500ms. The LTC7860 is ideal for industrial, avionics, and automotive power applications including ISO-7637, as well as positive high voltage distributed power Hot Swap™ systems. It is available in a thermally enhanced 12-lead MSOP package. Four temperature grades are available, with operation from –40°C to 125°C for the extended and industrial grades, a high temp automotive grade of –40°C to 150°C and a military grade of –55°C to 150°C.