I am working on a new custom light and I decided to use TaskLED's excellent D2DIM circuit since my design will be powered by a "fat" 18650 LiIon cell

I will be driving "L" voltage, premium "U" bin 3W's, so I am testing with an UX1L here:

Here is the output of george's excellent D2DIM on its lowest level:

then a little bit higher output:

and of course, "turbo" mode:

I must say that I am really impressed with this circuit