Sorry for the OT message, but you guys are great at answering my questions, and pretty quick at it.

Right now I am using LM317 voltage regulators to power my mosfets because each color of my RGB LED requires a separate voltage. The LM317 is only 1.5 amps & I would love to go up to the LM350 which is 3 amps. My main problem is that the heat generated by either one is enough that it requires a heatsink. I am using an aluminum enclosure and would love to bolt to it as a heatsink, but the tab shares output voltage which would cause problems with the grounded case.

Could anyone recommend other adjustable voltage regulators that might solve these problems? I see that the LM2650 doesnt require a heatsink, but it is SOIC and right now I am prototyping with all through hole stuff.

Anyway, I have only been working in the IC world for a few months now, so if anyone could shine some light on other magic IC's It would be great. Diging through the Digi-Key and Mouser catalogs is pretty tedious.

much thanks

brian