The LM5149-Q1 includes an internal hiccup-mode protection function. After an overload is detected, 512 cycles of cycle-by-cycle current limiting occurs. The 512-cycle counter is reset if four consecutive switching cycles occur without exceeding the current limit threshold. After the 512-cycle counter has expired, the internal soft start is pulled low, the HO and LO driver outputs are disabled, and the 16384-cycle counter is enabled. After the counter reaches 16384, the internal soft start is enabled and the output restarts. The hiccup-mode current limit is disabled during soft start until the FB voltage exceeds 0.4 V.