I was just wondering how hot the two voltage regulators on the STK500 are allowed to get.
I'm talking about the two near the DC jack, sitting on large gnd planes.
I'm powering the stk500, a mega32, a DS1631 and a backlit 16x2 LCD and the regulators are running too hot to touch.
I am sitting in the middle of an Australian summer without air conditioning so ambient temperature is about 28 degrees C.
Is it ok to let them run hotter than I can touch? Should I add a heat sink?
Nigel (aka Dingo)