The LM74610QDGKTQ1 is a Smart Diode Controller Device that can be used with an N-channel MOSFET in a reverse polarity protection circuitry. It is designed to drive an external MOSFET to emulate an ideal diode rectifier when connected in series with a power source. A unique advantage of this scheme is that it is not referenced to ground and thus has Zero Iq. 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 pull-down 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 suitable TVS diode.
● Qualified for automotive applications
● AEC-Q100 qualified-Exceeds HBM ESD classification level2, device CDM ESD classification level C4B
● Maximum reverse voltage of 45V
● No positive voltage limitation to anode terminal
● Charge pump gate driver for external N-channel MOSFET
● Lower power dissipation than Schottky diode/PFET solutions
● Low reverse leakage current
● Zero IQ
● Fast 2µs response to reverse polarity
● Can be used in OR-ing applications
● Meets CISPR25 EMI specification
● Meets automotive ISO7637 transient
● Requirements with a suitable TVS diode
● No peak current limit
