giantsfan3:
Got it. Didn't know that VIN was shorted to the pre-regulated Power supply input voltage.
LOL, I would have worded it 'wired to' rather then 'shorted to' 
I like to reserve the worded 'shorted' for more dynamic and dramatic situations, that usually involved magic smoke and cursing.
Lefty
PS: Looks like the S.F. Giants have shorted out and about to go up in smoke.