Peter wrote:
> I am looking for a simple circuit boost converter that will use a single
> Leclanche battery as source (down to 0.9V end of life or whatever passes for
> that) and provide 3.3 or up to 5.0V at a few mA for a microprocessor. I know
> that there are some Chinese parts that do this, in SOT123 or similar. They only
> use an external smd inductor and recovery diode (and two caps). Any pointers
> would be appreciated. Availability in small qty is a must. Low price would be
> nice.
>
> thanks,
> Peter
>
>
>   
Never used them, but try:

Linear Tech's LTC3400, LTC3429, or LTC3526 devices...

They don;t even need a diode.... but do require the inductor, some caps, 
and resistors. all for a 6-pin package.

Rolf
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