[linux-cirrus] Re: Guide me please
- From: from_free_linux2p6cirrus@xxxxxxxxxxx (David Collier)
- To: linux-cirrus@xxxxxxxxxxxxx
- Date: Mon, 14 Feb 2005 09:45 +0000 (GMT Standard Time)
Switching regulators work fine these days. Life moves on :-)
Your mobile phone and PDA are full of them. Strangely they don't
take nearly as much space as you'd expect, a TO220 package is
not much different from the whole switching reg ...
look at an LTC3440 - just a tiny chip, a 1206 coil, 2 0805 high
-value ceramics, and a few Rs and Cs.... 2.7V to 5.5V in, 3V3
out at 600mA, 80%+ efficient...
They may even have a fixed 3V3-out version
If you are running from a battery they make sense. If you want
the thing to stay cool, the same.
If you're running from a big source of 5V, and don't care about
these things - then linear is simple, and great....
David Collier
Postmaster.
Dexdyne Ltd - see www.Dexdyne.com and www.netrixdemo.com
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