Designed for 12 V or 24 V supply rails, the STPM801 ensures the availability of a voltage supply while protecting loads and outputs against high-voltage transients and other disturbances typically found on supply lines.
With integrated hot swap, soft start and ORing protections, the STPM801 protects loads from high-voltage transients, limiting and regulating the output during an overvoltage event, such as load dump, by controlling the voltage drop across an external N-channel MOSFET.
It is especially interesting to use the STPM801 when two supply lines are present and it is important to guarantee the continuity of the supply. In this case, an auxiliary supply line can replace the main line when it is out of order (undervoltage issue or any other malfunction).
The STPM801 also offers a set of features to support applications that need to fulfill functional safety requirements as defined by automotive Safety Integrity Level (ASIL) A-B-C-D depending on application specifications.