ITIMER pin open or short to GND: In this case, the ITIMER pin is already discharged below V_ITIMERTHR and hence indicates overcurrent blanking timer expiry instantaneously after an overcurrent event and triggers a circuit-breaker action without any delay.

ITIMER pin forced to some voltage higher than V_ITIMERTHR: In this case, the ITIMER pin is unable to discharge below V_ITIMERTHR and hence fails to indicate overcurrent blanking timer expiry, thereby rendering the primary circuit-breaker mechanism ineffective. The device relies on a backup overcurrent timer mechanism to provide some protection as a backup. If the device detects an overcurrent event on either the IMON pin or the backup overcurrent detection circuit, the device engages the internal backup time and after the timer expires (t_SPFLTMR), it latches a fault. The FET is turned off and the FLT pin is asserted.