[Diy_efi] switch mode replacement for to-220 7805?

[Marteney, Steve]

What about National Semiconductor's simple switcher series?  I've used a few
in TO-220-like packages (5 or 6 pins, don't remember) with good success.
The only thing I warn against is proper grounding and design or these things
ring like a teenage girl's telephone.

Steve

-----Original Message-----
From: Chris Conlon [mailto:synchris at speakeasy.org]
Sent: Tuesday, August 13, 2002 5:58 PM
To: diy_efi at diy-efi.org
Subject: [Diy_efi] switch mode replacement for to-220 7805?


Has anyone seen a switching regulator which is a suitable
drop-in replacement for a TO-220 package 7805? Power Trends
(now TI) lists a couple, the PT5100 series and the 78SR100
series, but both are considerably larger and much more
expensive (~$15/qty 1). They are also good up to ~1.5 amps,
while I'd be happy with something in the 200-250ma range,
which would hopefully be smaller and cheaper.

   Thanks in advance,
   Chris C.


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