At 01:16 AM 03/12/2009, you wrote:
>Use a P Channel FET... connect it such that the body diode is in the
>same direction as a traditional diode would be, and then connect the
>gate to ground.  You'll need one with appropriate ratings - probably Vgs
>would be the most worrisome, but you would need to look at the whole
>picture.
>
>-forrest

There are even more worrisome things going on with the whole picture. ;-)

It's not appropriate for the OP's application (presumably, s/he has not
mentioned the voltage, but presumably ~3.6V), but y'all might want to
look at how the Linear Technology LTC4358 internally does its thing.

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the reward"
speff@interlog.com             Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com



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