Hi,
Sorry for the late reply. This was an issue with a power supply farther down the chain. I have four supplies powered by 12V input, the first being the +5V mentioned. Each PGOOD is tied to the next EN in the chain. The last supply was a MPM3515 with a bad resistor value on the pull down for the feedback pin. That supply was going into condition where it was causing the 12V input to hit a current limit state. Once I fixed the resistor, all four supplies operate as documented. The output of the first supply was masking the real issue.
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