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Driver Family Extension Meets Demands of Next Generation LEDs

The RCD series of constant current LED Drivers from Recom has been extended to a maximum of 1200mA to provide the higher currents needed by the next generation of high brightness LEDs.

The RCD-24-1.0 and RCD-24-1.2 DC/DC converters deliver a stable maximum current of 1A or 1.2A respectively from a wide input voltage range of between 5V and 36VDC. The modules measure only 22mm x 12.5 x 8.5mm and yet are fully complete plug-n-play units requiring no external components, thus reducing the circuit footprint compared with alternative discrete solutions by up to 50%.

The RCD series have two independent dimming inputs: a PWM control that allows simple interfacing with microprocessors and digital controllers and an analogue voltage input that is suitable for lighting controllers or rheostat dimmers. Both dimming inputs are linear and the dimming range covers 0%-100%. The PWM input can also be used to shut down the converter to draw only 200µA from the supply.

The sophisticated feedback control circuit used in the RCD family of LED drivers ensures excellent load and current regulation, resulting in LED current stability of ±1%, a residual output ripple of less than 200mV and efficiencies of up to 96%. The low internal power dissipation of only 800mW permits the ambient operating temperature range of -40°C to +71°C for the 1000mA version and -40°C to +65°C for the 1200mA version. The drivers also feature short circuit protection and thermal shutdown.The drivers have been designed to be as reliable as the LEDs they are driving and contain no electrolytic or tantalum capacitors.

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