Jun 21, 2016 #1 K Kamal Sonani Newbie level 1 Joined Aug 3, 2014 Messages 1 Helped 0 Reputation 0 Reaction score 0 Trophy points 1 Activity points 7 recently i build led board that works on 5v. and as simple i use 7805 for prototype.but what about higher amount of current? i have option for 5v-10_or_20amp SMPS. but i have already 12v with enough current source.so how to regulate them?
recently i build led board that works on 5v. and as simple i use 7805 for prototype.but what about higher amount of current? i have option for 5v-10_or_20amp SMPS. but i have already 12v with enough current source.so how to regulate them?
Jun 21, 2016 #2 W Warpspeed Advanced Member level 5 Joined May 23, 2015 Messages 2,366 Helped 773 Reputation 1,548 Reaction score 789 Trophy points 1,393 Location Melbourne, Australia Activity points 20,317 If you are regulating 12v down to 5v there will be a lot of heat. Its not so bad with a 1 amp regulator. You could replace it with an LT1038 regulator which is 5v 10 amp, but it will require a much larger heat sink. Another alternative might be an LM396 which is an adjustable 10 amp regulator.
If you are regulating 12v down to 5v there will be a lot of heat. Its not so bad with a 1 amp regulator. You could replace it with an LT1038 regulator which is 5v 10 amp, but it will require a much larger heat sink. Another alternative might be an LM396 which is an adjustable 10 amp regulator.
Jun 21, 2016 #3 KlausST Advanced Member level 7 Joined Apr 17, 2014 Messages 25,173 Helped 4,868 Reputation 9,757 Reaction score 5,541 Trophy points 1,393 Activity points 168,428 Hi, I´d use a step down regulator. https://www.linear.com/products/Internal_Power_Switch_Buck You may also look for regualtors with external power switch. Klaus
Hi, I´d use a step down regulator. https://www.linear.com/products/Internal_Power_Switch_Buck You may also look for regualtors with external power switch. Klaus