TIDUF35 june 2023 AM6442
The LM74700-Q1 is an ideal diode controller which operates in conjunction with an external N-channel MOSFET as an ideal diode rectifier for low-loss reverse-polarity protection with a 20-mV forward voltage drop. The wide supply input range of 3.2 V to 65 V allows control of many popular DC bus voltages such as 24-V industrial systems.
In this reference design, the LM74700-Q1 acts as reverse polarity protection for the 24-V system input voltage.