This shows the evaluation board for the low voltage application. Notice that the evaluation board is connected to a carrier board for the LEDs allowing you to string multiple LEDs in series. At the center of the square board is a round area. This is the actual area required for the circuit as it has been optimized and laid out. The components on the outside of the circle in the lower right hand corner of the board are the multiple sense resistors and the jumpers used to select the output current. In a real application, you would select the appropriate sense resistor and replace the single sense resistor on the board so these components would not be necessary. On the back of this board, we have installed a full bridge rectifier made up of discreet diodes so that this board can be used for either an AC input or a DC input.