TPS2640 42V 2A eFuses Texas Instruments TPS2640 42V 2A eFuses are compact, feature-rich, high voltage eFuses, with a full suite of protection features. The wide supply input range of 4.2V to 42V allows control of many popular DC bus voltages. The device can withstand and protect the loads from positive and negative supply voltages up to ±42V. Integrated back to back FETs provide a reverse current blocking feature making the device suitable for systems with output voltage holdup requirements during power fail and brownout conditions. Load, source, and device protection are provided with many adjustable features. These features include overcurrent, output slew rate, and overvoltage, undervoltage thresholds. The internal robust protection control blocks, along with the high voltage rating of the Texas Instruments TPS2640, helps simplify system designs for Surge protection.