The FAULT output is push-pull output indicating the readiness and fault status of the driver. This pin is logic high in normal operation.

FAULT is held low when starting up until the series Si FET is turned on. During operation, if the power supplies go below the UVLO thresholds or the device temperature go above the OT thresholds, power device is disabled and FAULT is held low until a fault condition is no longer detected. If RDRV is open, FAULT is also held low. In a short-circuit or overtemperature fault condition, FAULT is held low until the fault latches are reset or fault is cleared. The FAULT pin is also held low if there is a cycle-by-cycle overcurrent fault, and gets reset when IN pin goes high. Please note: internal protection happens regardless of the connection of the pin outputs, which means that the protection features continue to operate even if fault reporting is ignored.