UNLESS OTHERWISE NOTED, this document contains PRODUCTION DATA.
To avoid misoperation of the device at low input voltages, an undervoltage lockout (UVLO) comparator monitors the supply voltage. The UVLO comparator shuts down the device at an input voltage of 1.7V (max) with falling VIN. The device starts at an input voltage of 1.8V (max) rising VIN. Once the device re-enters operation out of an undervoltage lockout condition, it behaves like being enabled. The internal control logic is powered up and the external resistor at the VSEL/MODE pin is read out.