SBVS342A February 2019 – March 2019 TPS7A16A-Q1
The power-good (PG) pin is an open-drain output and can be connected to any 5.5-V or lower rail through an external pullup resistor. When no CDELAY is used, the PG output is high-impedance when VOUT is greater than the PG trip threshold (VIT). If VOUT drops below VIT, the open-drain output turns on and pulls the PG output low. If output voltage monitoring is not needed, the PG pin can be left floating or connected to GND.
To ensure proper operation of the power-good feature, maintain VIN ≥ 3 V (VIN_MIN).