I don't know much about drivers. I saw this on DX. How well will it work? $2.60 - 3.6V 5-Mode 3W Circuit Board for Flashlights (1000mAh 3.7V Output) - Flashlight Parts and Tools
How well will it work for what?
For a 445nm it doesn't output enough voltage for the diode's full potential.
For any other diode, 1000mA is so much current it ill die instantly.
It looks like a 1000mA fixed linear driver with pulsed modes.
Depends on how much current you want to drive it with and the efficiency of your particular diode, but somewhere around 3.7~4.3V.
Don't you know?
You should, you've build one if IIRC.:thinking:
if IIRC.
If I Recall Correctly.