I saw this thread from several months ago and have a similar question, though I don't see a definitive answer in the original thread.
I will try to state my question in a more restricted fashion. In our configuration of TPS65217(D), LDO2 and LDO4 are configured for 3.3V output. According to the datasheet, the drop-out voltage specification for these LDO's is 200mV (max). My question is do these LDO's have defined behavior below this 3.5V input level? I.e. will they transition to an "Unregulated Pass-Through" mode? Is there a chance they may become unstable or have anomalous behavior?
Regards