The description of the first one says “linear regulator” but I think that is a mistake. I’m fairly positive it is resistored/direct drive. It looks like a PWM mode controller (ATMEL chip) some resistors, and a capacitor. The chip to which blue lead is soldered appears to read “AOAz1(?)” but no way is it a 2.5A linear regulator. It’s certainly not going to regulate/control output current like a Nanjg-105c/AMC7135 driver, if that’s what you want to know.
The second one is DD as well (for all modes, not limited to just High). It originated in the HD2010.
I have ordered the smaller driver and this here http://www.fasttech.com/products/1143103
It uses the same transiststor(a real big guy) as the other one but can be used without blinky modes and has a under voltage protection. But 2$ more and thicker.
So neither is regulated. The problem I have is space. I need a driver that is about 2mm thick, but can give 2500mA or better. The 8x7135 drivers are about 5mm thick, when all is said and done. Too thick for what I need. That's why I am looking for one that is thinner.
Yah, direct drive and fingers crossed. 2mm? It could be done with wires and no board. You’d have to use a smaller guage on the Vdd input to leave room for a larger guage on the output and ground. Maybe a disc ring of copper sheet for the ground. Outputs to the center, inputs to the perimeter. I think Justin would hate to do something like that. PM me the details and I’ll look into it. Is there any place to put an IC?
Well, there's as much room as you would find on a 4x7135 driver board, but that only puts out 1.4A, so, no, there's not any room really. I can fit an 8x7135 driver in, but I just wanted that extra couple mm of space for more heat sink. It's not really a big deal. I was just looking for a thin, single sided driver, that put out more than 2 amps.