SNVSBZ3 June 2021 LM5168-Q1
EN/UVLO provides ON and OFF control for the LM516x-Q1. When VEN/UVLO is below approximately 0.45 V, the device is in Shutdown mode. Both the internal linear regulator and the switching regulator are off. The quiescent current in Shutdown mode drops to 3 µA at VIN = 24 V. The LM516x-Q1 also employs internal bias rail undervoltage protection. If the internal bias supply voltage is below the UV threshold, the regulator remains off.