Thanks for the comments thus far! In this application, size matters, as does cost. Adding a bunch of extra parts around a 7805 seems to drive up cost and board space. I'm looking at the LM2940, which is $0.886 in 1k quantities. The LM2936 looks similar, but is 50mA instead of 1A and, according to http://www.findchips.com, looks a bit more expensive. THANKS for the comments! Harold -- FCC Rules Updated Daily at http://www.hallikainen.com - Advertising opportunities available! -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist