ZHCSD91B January 2015 – January 2022 TPS65251-1 , TPS65251-2 , TPS65251-3
PRODUCTION DATA
The PGOOD pin is an open-drain output. The PGOOD pin is pulled low when any buck converter is pulled below 85% of the nominal output voltage. TI recommends to use a pullup resistor from the PGOOD to the output of Buck 1. The PGOOD is pulled up when all three buck converters’ outputs are more than 90% of its nominal output voltage.
The reset time of the PGOOD pin varies according to the part:
The polarity of the PGOOD pin is active high.