I'm making a stepper driver with ULN2803. It's working, but the IC heats up very quickly. I'm not using microstepping. I'm using two outputs paralleld together, totaling one ULN IC per driver (8 outputs / 2 = 4 outputs, as needed for uniploar driving).
Is it safe to operate the ULN in high temps?Or should I get some cooling? Is there cooling for DIP packages?
No it is not safe to operate at high temperatures.....
Also u soulh use heat sink...probably u`r motor has high amp(ic has
500 mA)....and that is why
the ic get hot.I attach pdf for ic maybe it helps.