The LM74501-Q1 controller has all the features necessary to implement an efficient and fast reverse polarity protection circuit. This easy-to-use reverse polarity protection controller is paired with an external N-channel MOSFET to replace other reverse polarity protection schemes such as a P-channel MOSFET. An internal charge pump is used to drive the external N-Channel MOSFET with a typical gate drive voltage of 12 V. The Gate Discharge Timer feature of the device enables meeting automotive ISO7637 pulse 1 transient requirements without an additional TVS Diode (TVS less) under certain load conditions. The LM74501-Q1 has integrated switch (SW), which enables input battery voltage monitoring by connecting an external resistor divider from the SW pin to GND. An enable pin, EN, is available to place the LM74501-Q1 in shutdown mode, disabling the N-Channel MOSFET and minimizing the quiescent current.