IREF pin open or forced to higher voltage: In this case, the IREF pin (V_IREF) is pulled up internally or externally to a voltage which is higher than the target value as per the recommended I_OCP or I_LIM calculations, preventing the primary circuit-breaker, active current limit, and short-circuit protection from getting triggered even if there is significant current flowing through the device. The device relies on an internal overcurrent detection mechanism to provide some protection as a backup. If the device detects that the backup overcurrent threshold is exceeded but at the same the primary overcurrent or short-circuit detection on ILIM or IMON pin fails, it triggers single point failure detection and latches a fault. The FET is turned off and the FLT pin is asserted.

IREF pin shorted to GND: In this case, the V_IREF threshold is set to 0 V, causing the part to perform active current limit or circuit-breaker action even if there is no significant current flowing through the device.