The LM74610-Q1 is a controller device that can be used with an N-channel MOSFET in a reverse polarity protection circuitry. The device is designed to drive an external MOSFET to emulate an ideal diode rectifier when connected in series with a power source. This scheme is not referenced to ground and thus has Zero I_Q. The LM74610-Q1 controller provides a gate drive for an external N-channel MOSFET and a fast response internal comparator to discharge the MOSFET gate in the event of reverse polarity. This fast pulldown feature limits the amount and duration of reverse current flow if opposite polarity is sensed. The device design also meets CISPR25 Class 5 EMI specifications and automotive ISO7637 transient requirements with a qualified TVS diode.