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DIY Driving Luxeon High Current LEDs
If you want to design yourself a circuit for driving a very bright high current LEDs, say Luxeon LEDs you may consider to read the 
following information. It will describe you with the using of PWM controller such as LM5020 from the National Semiconductor with fast turn ON and turn OFF times so that the LED light output can be synchronized to a system timing control function.
The figure illustrates the circuit for driving the Luxeon LEDs and the connection for all components. The component are listed as follow : 150uF 0.21 Ohms Sanyo 50CV150AX (C2), 100pF Vishay VJ0805A101KXAAT (C4), 1uF TDK C2012X7R1H105K (C5), 0.1uF Vishay VJ0805Y103KXAC (C7), 0.5 V Diodes B240 (D1), 68uH 0.2 Ohms Coilcraft DO3316P-683 (L1), SI3458DV Vishay (M1), 150k Ohms Dale (R1), 1 Ohms Dale (R2), 10k Ohms Dale (R2,R3,R4), 1 Ohms Dale(R5), 100 Ohms Dale (R6), and LM5020 National Semiconductor (U1).
