Method, computer program product, and apparatus are provided for identifying a graphic symbol within an image obtained by optical scanning. Control circuitry selects between a switching supply operating mode and a non-switching supply operating mode based on the output setpoint. The LED package can be coupled to a heat sink for dissipating heat from the LEDs. At least one end of an inner void extends outwardly beyond a dam bar to provide a flow under pathway for encapsulating material when the leadframe is engaged by a top mold.