2008/5/25 Electron <electron2k4@infinito.it>:
>
> At 11.18 2008.05.24, you wrote:
>>Mario,
>>
>>How about using a switchmode chip as a pre-regulator to 5.5 or 6V or
>>so and then a low quiesent LDO linear for the final reg? (If needed).
>>
>>The switchmode part could operate with a largish storage cap in burst
>>mode so it's average current could also be very low.
>>
>>I can't quote part numbers but there should be a wide rage to select
>>from , even if you just stick to a couple of maufacturers. (eg Nat
>>Semi, TI )
>>
>>RP
>
> Hello,
> I thought about it, but all switchmode "pre"regulators draw mA's of
> quiescente current, so they're out. Thanks anyway.
>


Not the ones I'm thinking off, although I can't remember the type
numbers.  Similar to those used in cellphones & MP3 players, but with
a higher input voltage capability.

RP
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