On Wed, Dec 15, 2010 at 8:17 AM, Olin Lathrop <olin_piclist@embedinc.com>wr=
ote:

> V G wrote:
> > 1. I have selected a power diode to drop the voltage of the initial
> > 5.8 volts to something less than 5.5 volts.
>
> I guess I missed something in the flurry of messages, but I thought you
> were
> now using a switcher so the input voltage above 5.5V is not a problem, in
> fact desirable.  Certainly a switcher can be set to deliver pretty close =
to
> 5V out, so what's 5.5V got to do with anything now?
>

Update: I'm looking at a new switching supply:
http://www.linear.com/pc/productDetail.jsp?navId=3DH0,C1,C1042,P132453

<http://www.linear.com/pc/productDetail.jsp?navId=3DH0,C1,C1042,P132453>The
LTC3112

It has very high (95%) efficiency at 1 A draw, which is perfect for my
application. Reasonable package as well. Now the only thing is a matter of
getting the sample.
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