At 07:11 AM 10/16/2009, Olin Lathrop wrote:
>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.

Hi there, Olin.

I may be wrong, but I think that what the original poster was asking 
was: Can he use a Mosfet gate driver chip to drive his LED 
directly?  In other words, the gate driver chip is being used to 
drive the load directly without an intervening Mosfet.

dwayne

-- 
Dwayne Reid   <dwayner@planet.eon.net>
Trinity Electronics Systems Ltd    Edmonton, AB, CANADA
(780) 489-3199 voice          (780) 487-6397 fax
www.trinity-electronics.com
Custom Electronics Design and Manufacturing

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