The LM5164-Q1 is in active mode when VEN/UVLO is above the precision enable threshold and the internal bias rail is above its UV threshold. In COT active mode, the LM5164-Q1 is in one of three modes depending on the load current:
- CCM with fixed switching frequency when load current is above half of the peak-to-peak inductor current ripple
- Pulse skipping and diode emulation mode (DEM) when the load current is less than half of the peak-to-peak inductor current ripple in CCM operation
- Current limit CCM with peak and valley current limit protection when an overcurrent condition is applied at the output