Help identifying a sot-223 ldo voltage regulator
It's a Burr-Brown/TI/AMS/NatSemi LM1117 regulator. 

Normally, LM1117/AMS1117 family has a wide range of members having fixed outputs (e.g. 1.2V, 1.8V, 3.3V). But probably, this one is the adjustable one. To be sure, look for a resistor pair connected to the 1st (leftmost) pin or put a bigger picture showing wider area.