8.3.6.4 Reverse Polarity Detection

Reverse polarity detection has the same detection mechanism and behavior as open-load detection both in the on-state and off-state. See Table 2 for more details.

In the on-state, the reverse current flows through the FET instead of the body diode, leading to less power dissipation. Thus, the worst case occurs in the off-state. The reverse current must be limited to less than I_R(2). Set the related INx pin high to keep the power dissipation to a minimum. For external reverse-blocking circuitry, see Reverse-Current Protection for more details.