On Thu, 1 Oct 1998, Matt Bonner wrote:

> > > I need to be able to switch power to a section of my circuit off and on
> > > under PIC control. I've been looking at analog switches, but they all
> > > have fairly high "on" resistance (tens of ohms or more). The problem is
> > > that I need to provide a nicely regulated 5V at a widely varying current
> > > (fraction of a mA up to 100 mA) when the power is on. Even a 10 ohm
> > > resistance will drop the voltage significantly at those high currents.
> >
> > I think that you want a VFET. Try a BSS (BSS 170 etc).
> >
> > Peter

The neat thing with this BSS VFET is, you need NOTHING to switch 5V with
it. Check the specs, guys, It turns ON in the proper Vgs range for direct
drive from a CMOS output. I don't remember the exact type number. It may
have been 175 ?

Peter