8.3.6.3 Short-to-Battery Detection

Short-to-battery has the same detection mechanism and behavior as open-load detection, in both the on-state and off-state. See Table 2 for more details.

In the on-state, 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.

• If V_OUTx – V_VS < V_(F) (body diode forward voltage), no reverse current occurs.
• If V_OUTx – V_VS > V_(F), reverse current occurs. The current must be limited to less than I_R(1). Setting an INx pin high can minimize the power stress on its channel. Also, for external reverse protection, see Reverse-Current Protection for more details.