17 Jun
2002
17 Jun
'02
8:14 p.m.
If you poke around in the DigiKey catalog a little bit
I'll be you can find
the TO-220 switchers that somebody or other sells.
Yeah, Powertrends (now owned by TI) makes them. I prefer the NatSemi
simple switchers over the all-in-one one Powertrend units, which are
are largish chunks of epoxy and metal on the end of three TO-220 legs.
Another problem is that the small switchers still only
put out about
a half to maybe one ampere, and I've got a few S-100 boards that have two or
three three three-amp regulators on them.
The 150kHz and 250kHz NatSemi units are 5-legged TO-220's and do 3A and
5A quite comfortably. You need room for the inductor, of course, but
small ones are very readily available.
Tim.