Jonathan Hallameyer wrote:
> It
> takes 1.5A @2v. Now for driving that, could I get away with using a
> 2A peak mosfet gate driver?

The current the MOSFET is driving and the current requirement of the gate
driver are not much related.  2A is on the high end for gate drivers, and
should be able to overcome whatever gate capacticance there is quickly.  You
have rather low voltage and current requirements for the FET, so you can use
one with relatively low gate charge.  A much lower current driver should be
fine.

The IRLML2502 N channel FET can easily do this job, and can often be run
straight from a PIC pin.

> I was going to put a 28ish uF capacitor
> in series to keep from damaging anything if it got stuck on, and a
> diode in anti-parallel with the LED to discharge the dc block cap on
> the off cycle.

That's the wrong place for the diode to discharge the cap.


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