controlling High power leds with XPpower DC/DC converters and arduino

Hi I am a beginner at using the arduino but want to use it to control some high power leds for a bike project. I plan to use some XPpower led drivers which have a pin for PWM. However looking at the data sheet the maximum voltage for this pin is 1.25 volts. The arduino output pins are 5 V. My question is how can I safely interface the output pins of the arduino to the PWM pin of the XPpower led driver? Any help would be much appreciated.

Regards

John

Use a voltage divider (i.e 2 resistors in series with a central tap) to reduce the voltage down to 1.25

Just google resistor divider

Thanks for that, that sounds quite easy. I will give it a go.

Regards

John

paler31: I plan to use some XPpower led drivers which have a pin for PWM. However looking at the data sheet the maximum voltage for this pin is 1.25 volts.

It would be useful to link to the data sheet. What are the electrical characteristics of the pwm pin i.e. what voltage signal does it need and how much current will it draw? Presumably you wouldn't plan to drive it right on the limit of its voltage toleration.