>The CES2310 FEt that I have mentioned previously would work OK there.
>Zetex do some very low Vgson (low gate voltage ) FETs.
>There aren't a vast number that are happy at 1 volt.

But do they come as TH parts (requirement 5 from the OPs list)?

>A good trick is to use Vout to provide the gate drive voltage
>thereby allowing a far wider range of FETs to be used.

I guess a couple of bootstrap components are not going to eat into the 
couple bucks budget he gave, that much.

But I am wondering how well Bob Blicks circuits would meet the budget. There 
is a reasonable number of components on those. 

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