I'm looking for a driver chip to run several "high-current" (20-30mA) LEDs from a single MCU. I've got enough MCU pins for a 1:1 solution, but the current exceeds the MCU ratings for direct connection.
There's no shortage of advertisements for LED driver chips like Maxim's MAX6966, which could do the job (via SPI). I've got to think there's a simple multi-channel transistor package for this purpose, but Digikey searches on "buffer" or "driver" turn up too many hits to filter through.
What generic part number should I be searching for (and how does one find these generic numbers in the first place)?
Also, is there any trick to driving blue & white LEDs, or just additional current and higher forward voltage?
Thanks, Richard