Driving an LED with a LD1084V but not able to get more than 3A...
Hi, I just wrote my entire post and pressed the wrong damn button and it disappeared in a puff of frustration so please excuse me if I come across a bit cranky!
I am trying to get a red LED from a C*s*o projector, a PT54, to work in a flashlight build... a small project of mine.
OK so I have a beefy bench PSU, connected to a breadboard with a classic DDL circuit, using a LD1084V, but even when the ADJ resistance is dropped to almost zero, the current drawn by the LED does not exceed 3 amps. Doesn't matter how much I turn up the input volts.
Why is this? There are plenty of volts. There is no shortage of current... it seems like the LED is simply not drawing more current. But it's a diode! Surely it should take as much as it can get? So why stop at 3 amps? Is it a limitation of the regulator? Why 3A though, when it's supposed to handle 5?
If I'm doing something wrong, any ideas what? And if I am not and this is simply a limitation of the regulator, can I wire more than one LD1084V in parallel to get more amps out of it? I wanna drive this baby with like 6 or 7 amps! But there does not seem to be much info on how to wire two or more together to increase current... or if there is, I can't find it.