My question is related to thread http://www.edaboard.com/thread244722.html. but since the thread is old i am starting a new one.

I want to build a sensor using LED so i need a constant brightness and temperature compensating driver (so no drift in wavelength with T) with a good precision. I have come across the CL2 series from Microchip (previously Supertex). They look good from the datasheet but seems to be for high voltage applications up to 90 or 220V. I want to use ThorLab LED with vf ~3.3V and current <50mA.

please advise me if there is a more appropriate driver or if you have experiance with the CL2 and if they are good for low voltage applications.

Thank you very much in advance.