The data sheet says you can have up to a 17v LED supply, that's maybe 7-8 LEDs depending on the forward voltage of the LEDs you're using, so what is your LED supply? If it's 5v that may explain the problem.
The data sheet says you can have up to a 17v LED supply, that's maybe 7-8 LEDs depending on the forward voltage of the LEDs you're using, so what is your LED supply? If it's 5v that may explain the problem.