To enable hiccup operation, make sure that HICCUPEN  = 1 in the CONTROL1 register.

If hiccup operation is enabled and the high-side switch current exceeds the current limit threshold on 32 consecutive switching cycles, the device:

• Stops switching for 128µs, after which it automatically starts switching again (it starts a new soft-start sequence)
• Sets the HICCUP bit in the STATUS register
• Pulls the PG pin low. The PG pin stays low until the overload condition goes away and the device can start up correctly and regulate the output voltage. Note that power-good function has a deglitch circuit, which delays the rising edge of the power-good signal by 40µs (typical).

Hiccup operation continues in a repeating sequence of 32 cycles in current limit, followed by a pause of 128µs, followed by a soft-start attempt for as long as the output overload condition exists.

The device clears the HICCUP bit if the user reads the STATUS register when the overload condition has been removed.