ZHCS089G February 2011 – September 2017 TPS65185
PRODUCTION DATA.
The power good pin (PWR_GOOD) is an open-drain output that is pulled high (by an external pullup resistor) when all four power rails (CP1, CP2, LDO1, LDO2) are in regulation and is pulled low if any of the rails encounters a fault or is disabled. PWR_GOOD remains low if one of the rails is not enabled by the host and only after all rails are in regulation PWR_GOOD is released to HiZ state (pulled up by external resistor).