Driver for 10V+ LEDs

Flashlight Modding and DIY Parts
1

I am waiting to receive a few samples of Nichia NC3W121A, NC4W121A and NC5W121A LEDs. Each LED has a larger surface area, and they all operate at a maximum of 1.2A but at increasing voltages of 10.2V, 13.6V and 17V respectively. My power source is a 2 cell supply at 8.4V. I was told the only way to drive these LEDs with the current setup is through a CC/CV converter. I looked on ebay and there are a couple I found:

LX6009

CC4A10401

XL6009

MT3608

Has anyone worked with a CC/CV converter for driving a LED and is there any in particular that is good?

2

You will need a boost driver that will boost from 2 - cell input. Taskled HBflex

3

Thanks, I read more to understand how drivers works and so far I have the following candidates:

HBFLEX -$40
HBOOST - $40
BLUESHARK - $25

These provide enough output voltage to drive all the Nichia LEDs.

Also:

DX25516, Vout=10.8, 800mA, $3.73
DX26106, Vout=17.5, 800mA, 4.44
DX128093, Vout~10, 800mA-1A, $3.84

Basically any driver meant to drive 1A LEDs like XR-E2 or XQ-E in series from a two-cell power supply would be suitable for at least some of the LEDs. I’d prefer to start with the DX ones since there are cheaper and if results are not good then I would try the more expensive ones. If anyone used the DX ones and doesn’t recommend them let me know.