Hi all,

Time for a new dimmer project! Actually, this is to dim an Ikea Jansjo
LED lamp for reading. They're a great product, but can be a bit bright
for beside reading.

I'd like to make a simple PIC controlled dimmer for them. Should be a
fun project. But...most of my dimmers work at 12V or higher. So now
I'd like to find a MOSFET to use when dimming 3.3V to 5V loads. These
will be smallish loads, no more than 1A. I'm hoping to find an SOT23
package for compact size.

In the past I've used the Vishay Si2318DS, so I have some of those in
stock already. Datasheet here:
http://www.vishay.com/docs/72322/72322.pdf . What I'm having trouble
figuring out is whether 3V will be enough gate drive. I recognize that
at low voltage levels the Rds will be higher. I would prefer to not
use a separate gate driver if possile, again because of size.

So, does anyone have an parts suggestions? I'm happy to look to
different parts, I'm just not 100% sure what the most important
electrical characteristic is, so if anyone have experience I'd love to
hear about it.

Thanks!

Josh
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