Recom lighting rcd 48 lightline buck led driver dcdc constant current recom lighting rcd 48 120m a constant current 1200ma step down dc to dc converter with an input voltage range of 9 to 60v dc and an output voltage of 2 to 56v dc the very high efficiency device is designd to drive a number of high power leds and features both digital pwm and analogue voltage dimming typical applications for these units include 48v bus lighting systems or high voltage led arrays eg high bay lights