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From: Tam/WB2TT on 18 Jan 2007 09:42

"kikuzo" <kikuzo(a)gmail.com> wrote in message
news:1169104460.844728.16210(a)l53g2000cwa.googlegroups.com...
>I was not very specific... sorry !!
>
> The application is for measuring several accelerometer and
> magnetometers using low noise instrumentaion amplifiers. The input
> voltage range is from 9Vdc to 24Vdc. The circuit input current is
> about 0.5A and the most important, the output ripple should be
> something about 20UVrms (micro volts).
>
> I'm trying to find a DC-DC switching converter instead of a linear
> regulator for efficiency and lower power disipation. I used a LT1763,
> with excellent low noise output, but it was disipating too much heat.
>
> Thank you all for your comments.
>
> Hideo.
>
The 24V may be a problem as far as cheap modules go. Somebody suggested a
National buck regulator chip; that might be the best way to go. Also, check
out TI. They used to make regulators that looked like large DIPs that
included the inductor. For audio, you will want the switching frequency to
be above 100 KHz.

Tam


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