STEF4S Datasheet - STMicroelectronics

STEF4S Electronic fuse

The STEF4S is an integrated electronic fuse optimized for monitoring the output current and the input voltage. It can be connected in series to 3.3 V or 5 V rails, protecting the electronic circuitry on its output from overcurrent and overvoltage. The operating mode (5 V or 3.3 V) can be selected by.

STEF4S Features

* Power MOSFET on-resistance (typ.): 40 mΩ

* Enable function

* Output clamp voltage (typ.): 5.7 V in 5 V mode, and 3.8 V in 3.3 V mode

* Undervoltage lockout

* Short-circuit limit

* Overload foldback current limit

* Controlled soft-start

STEF4S Datasheet (635.35 KB)