HT1632 Pin 8 says GND above it, that's why I asked.
Not sure if it fits your needs but this thing produces virtually no heat and can be dropped in place of a 7805, same size and pinout. And for how cool it is it's not very expensive either.http://www.newark.com/jsp/search/productdetail.jsp?sku=72R3616
I bought a bunch recently myself. They have pretty good prices.I don't know who in the forum identified them as a source.Great price on MAX7219s also.