Hi
I want to drive 1w RGB LED(300mA) with ws2801. Acording to ws2801 datasheet Vref=0.6v , Res_FB=Vref/Iout=0.6/0.3=2 ohm, but ws2801 can max drive 50mA. For this reason, I draw this circuit but when I increase V_variable, current increase too!
When I connect a 0.6v to RFB ws2801 operate correctly and disconnect output, but with my circuit don't operate correct. please help me...
Thanks
