The FLT pin is open drain and can report a fault signal to the DSP/MCU when overcurrent and short circuit faults are detected through the OC pin. The FLT pin is pulled down to GND, and is held in a low state unless a reset signal is received from RST/EN. The device has a fault mute time, t_FLTMUTE, within which the device ignores any reset signal.

RST/EN is pulled down internally. The device is disabled by default if the RST/EN pin is floating. The pin has two purposes:

• Resets the overcurrent and short circuit fault signaled on the FLT pin. The RST/EN pin is active low. If the pin is set and held in a low state for more than t_RSTFIL, the fault signal is reset and FLT is reset back to the high impedance status at the rising edge of the RST/EN pin.
• Enables and shuts down the device. If the RST/EN pin is pulled low, the driver is disabled and shut down by the regular turn off. The pin must be pulled up externally to enable the part; otherwise, the device is disabled by default.