Voltage regulation circuit 12V to 5V in 5A range

[richard]

i would start with a 100R resister between each cathode and vss , if the backlight is not brite enough
drop the R incrementally .

[richard]

you should have specs on max current for the backlight, the actual R used should limit to that value or less at 100% pwm modulation at 5v. imo

[Demon]

you should have specs on max current for the backlight, the actual R used should limit to that value or less at 100% pwm modulation at 5v. imo

Roger, Richard.

Specs say 90mA. Gonna have to test to see if that's into the "overbright" range with pixels bleeding through.

I remember setting this "by eye" at an intensity that was "aesthetically pleasing". I was also trying to save on AMPS too since I was initially thinking of running off USB power.