I had 2 options originally:

- stay under 500mA and use USB power
- use a wall adapter and add a voltage regulator component.


USB power is no longer an option with the 4 LCDs. I don't have any "simple" design for a SMPS that would have noisy power.

The LM1084 "should" be as clean as the 7805 (I hope).

I can use the TO-220 package with cooling fins, and even add a tiny cooling fan. Tests will confirm how much heat I will generate with everything.