The LM74610-Q1 is a 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 With the Following Results:
Exceeds HBM ESD Classification Level 2
Device CDM ESD Classification Level C4B
Maximum reverse voltage of 45 V
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
–40°C to 125°C Operating Ambient Temperature
Can be used in ORing Applications
Meets CISPR25 EMI Specification
Meets Automotive ISO7637 Transient Requirements with a suitable TVS Diode