8.4.3 Undervoltage Lockout

The under voltage lockout circuit prevents the device from malfunctioning at low input voltages and the battery from excessive discharge. It disables the output stage of the converter once the falling V_IN trips the under-voltage lockout threshold V_UVLO which is typically 2.0V. The device starts operation once the rising V_IN trips V_UVLO threshold plus its hysteresis of 100 mV at typically 2.1V.