red led 1.9v - 2.2v driver

[Barry_Scott]

Hi,

I have a project were i want to use these, Red CREE LED Emitter (20mm 1.9~2.2V) but i currently don't have a way of driving them. any suggestions?

Matt

 

[baterija]

Nothing special about the different Vf range if you are using a constant current driver. It's just matter of picking based on your input voltage and the Vf range. What input were you looking to use?

 

[Barry_Scott]

I was looking at 6.3 to 8.4 as in 2 lipo cells. it is for a rear back light for a bike. I am thinking of non modal version so i can flash the light by interrupting the power.