It depends on the current. How much current are you asking the 5V and 3.3V pins to supply when running on that 12V input? It is pretty easy to overheat the regulator with just one LCD backlight.
It depends on the current. How much current are you asking the 5V and 3.3V pins to supply when running on that 12V input? It is pretty easy to overheat the regulator with just one LCD backlight.