The PG pin is an output indicating if the LDO is ready to provide power. This pin is implemented using an open-drain architecture. During the start-up phase, the PG voltage threshold is set by the REF voltage when the fast soft-start is ongoing and is set by the NR/SS voltage when the fast soft-start is completed and the switch between REF and NR/SS is closed.

As shown in the Section 7.2, the PG pin is implemented by comparing the SNS pin voltage to an internal reference voltage and, as such, is considered a voltage indicator reflecting the output voltage status.

For PG pin implementation, see the Section 8.1.13 section.