8V to 48V Fully Programmable Universal Electronic Fuse, 4A, HTSSOP - 

STEF01FTR is an universal integrated electronic fuse optimized for monitoring output current and the input voltage on DC power lines. When connected in series to the main power rail, it is able to detect and react to overcurrent and overvoltage conditions. When an overload condition occurs, the device limits the output current to a safe value defined by the user. If the anomalous overload condition persists, the device goes into an open state, disconnecting the load from the power supply. The device is fully programmable. UVLO, overvoltage clamp and start-up time can be set by means of external components. The adjustable turn-on time is useful to keep the in-rush current under control during startup and hot-swap operations. The device provides either thermal latch and autoretry protection modes, which are selectable by means of a dedicated pin. Typical applications include hot board insertion, e industrial/alarm/lighting systems, distributed power systems and telecom power modules.