SNVSBN6 April 2020 LM5181-Q1
EN/UVLO facilitates ON and OFF control for the LM5181-Q1. When VEN/UVLO is below approximately 0.6 V, the device is in shutdown mode. Both the internal LDO and the switching regulator are off. The quiescent current in shutdown mode drops to 3 μA at VIN = 24 V. The LM5181-Q1 also employs internal bias rail undervoltage protection. If the internal bias supply voltage is below its UV threshold, the converter remains off.