Philip wrote:
>Much more of a programmer guy than a hardware guy, and still a bit
>new to PICs, so sorry if this is a trivial question...
>
>I am working on using 4 hardware PWM outs on a 18F-something to drive
>4 LEDs using pulse-width to control brightness.  And I need to make
>them as bright as possible when they are full on.
>
>I think I may run up against current limitations sourcing/sinking the
>LEDs straight from the pins, so I could use some transistors to drive
>the LEDs.
>
>But rather than using discreet transistors is there a single DIP
>package of some sort I could substitute?  4 independent drivers would
>be optimal...

Check out the UCNxxxx or ULNxxxx from Allegro and other manufacturers.
The ULN2804 is 8 open collector outputs I think. There's probably smaller
ones. Have a look at: http://www.allegromicro.com/
David...

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