Dec 30, 2011 #1 R robert576 Newbie level 1 Joined Dec 30, 2011 Messages 1 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,286 Hi all... My question is can we stack two or more uln2803 ICs on top of each other(i.e. in parallel) to increase the max current capability? I want around 600mA in each of the 8 channels at 50% duty cycle (to drive two steppers in full step mode). Thanks in advance!
Hi all... My question is can we stack two or more uln2803 ICs on top of each other(i.e. in parallel) to increase the max current capability? I want around 600mA in each of the 8 channels at 50% duty cycle (to drive two steppers in full step mode). Thanks in advance!
Dec 30, 2011 #2 FvM Super Moderator Staff member Joined Jan 22, 2008 Messages 52,409 Helped 14,749 Reputation 29,780 Reaction score 14,095 Trophy points 1,393 Location Bochum, Germany Activity points 298,048 Can we? - Yes. Can we expect equal current share between both chips? - Hopefully yes, but not guaranteed by specification. You also should consider, that total thermal resistance isn't much reduced by stacking the chips.
Can we? - Yes. Can we expect equal current share between both chips? - Hopefully yes, but not guaranteed by specification. You also should consider, that total thermal resistance isn't much reduced by stacking the chips.