Thanks yet again Grumpy Mike.
That Fscale looks like exactly what i was after!
Unfortunatly, i cant just use a resistor since im actually controlling a MOSFET which does the heavy switching for a few Amps of leds.
Maybe i could use a resistor and capacitor to the signal in of the MOSFET to reduce the lowest level or rather, smooth its transition. (it is a visible step from about 0-5 on the PWM range) or would the MOSFET not like that?