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USB Regulator in Host Mode

Question asked by TerryMcHenry on Jun 11, 2014
Latest reply on Jun 12, 2014 by TerryMcHenry

I would like to run the USB on a KL25 in host mode, so I don't need the on-chip linear regulator.  If I look in the reference manual, figure 36-2, I see that the regulator powers "other modules" and then goes to an output pin.  What are these "other modules"?  The ultimate question is, I have 3.3V available so I don't need the regulator, can I leave it unconnected or is there something internal to the chip that needs to be powered by the output of the regulator?