Also check LM2611, which I ran across recently, though have not =20 personally. I like their parts due to low parts count. Cheers, -Neil. Quoting Oli Glaser : > Thanks for all the replies - some helpful stuff there.. > > I think I'm on the right track, just need to use a chip with lower output > resistance. > I'm liking the LT1611/7 option, as it looks like it's possible to get ver= y > low output ripple with it (~1mV compared to ~50mV with charge pump > variants), so I wouldn't need to double/regulate the voltage, saving at > least 2 chips. Haven't looked at the prices yet though... > Think I will probably order a selection, take my time and prototype a few > options (should have done so in the first place as it needs to be done > properly - defeats the object to have a well designed circuit powered fro= m a > badly designed supply..) > > > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .