> The MC34063 needs 3 volts minimum, and the datasheet lists an 
> operating current of 4mA @5v.  The supercap has a maximum working 
> voltage of 2.3volts which makes the Motorla a non-starter for this 
> application.

Unless you power it off its own boot straps ;-).
But, I agree that LT1615 is a far far far better solution technically.


        RM



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