SLVSEE8B November 2019 – May 2021 DRV8899-Q1
The nFAULT pin has an open-drain output and should be pulled up to a 5-V or 3.3-V supply. When a fault is detected, the nFAULT pin is logic low. nFAULT pin will be high after power-up. For a 5-V pullup, the nFAULT pin can be tied to the DVDD pin with a resistor. For a 3.3-V pullup, an external 3.3-V supply must be used.