Analog.com EngineerZone AnalogDialogue Log In Wiki Resources and Tools Education Content Wiki Help Wiki Tools search wiki This version (07 Jun 2018 17:46) was approved by Brandon. The Previously approved version (07 Jun 2018 08:16) is available. CftL-LED-Bar Table of Contents Description The CftL-LED-Bar is a boards that contains LED's with 3 different spectral outputs (627nm, 530nm and 470nm). Each of the three channels contains a string of four LED's in series able to handle currents of up to 1A. CftL-LED-Bar Description Connectors Screw Terminals 3 Pin Headers LED Ratings Red Channel Green Channel Blue Channel Schematic, PCB Layout, Bill of Materials Related Hardware Recommended LED's Lumileds Red LED- LXM5-PD01 Lumileds Green LED- LXML-PM01-0080 Lumileds Blue LED- LXML-PB02 Lumileds Datasheet Connectors Screw Terminals Screw terminals P1, P5 and P9 are connectors for the anode and cathode for each of the red, green and blue channels of the CftL-LED-BAR. Pin 1 is the anode and is to be connected to the positive terminal of the source while pin 2 is the cathode and is to be connected to the negative terminal of the source. 3 Pin Headers The 3 pin header is used to add LED's to series string of each channel. Placing a shunt on +XLEDN, where X is for the channel to be controlled and N refers to the LED number, adds the next LED on the string and placing the shunt on GND position terminates the string, connecting the last LED to the negative terminal. LED Ratings Red Channel Each LED on this string has a typical forward voltage of 2.9V and tested with 500mA of current. Adding LED's to the string of LED's in series will result in a higher forward voltage. Please see below table for reference: No. of LED's Minimum Forward Voltage Required 1 2.9V 2 5.8V 3 8.7V 4 11.6V Green Channel Each LED on this string has a typical forward voltage of 3.21V and tested with 500mA of current. Adding LED's to the string of LED's in series will result in a higher forward voltage. Please see below table for reference: No. of LED's Minimum Forward Voltage Required 1 3.21V 2 6.42V 3 9.63V 4 12.84V Blue Channel Each LED on this string has a typical forward voltage of 2.95V and tested with 500mA of current. Adding LED's to the string of LED's in series will result in a higher forward voltage. Please see below table for reference: No. of LED's Minimum Forward Voltage Required 1 2.95V 2 5.90V 3 8.85V 4 11.80V Schematic, PCB Layout, Bill of Materials CFTL-LED-BAR Design & Integration Files Schematics Bill of Materials Gerber Files Assembly Files Related Hardware CN0410 3-Channel LED Driver End of Document resources/eval/user-guides/circuits-from-the-lab/cftl-led-bar.txt * Last modified: 07 Jun 2018 17:46 by Brandon Ahead of What's Possible 15,000 4,700+ 125,000 50+ Problem Solvers Patents Customers Years ADI enables our customers to interpret the world around us by intelligently bridging the physical and digital with unmatched technologies that sense, measure and connect. We collaborate with our customers to accelerate the pace of innovation and create breakthrough solutions that are ahead of what's possible. See the Innovations Analog Devices. Dedicated to solving the toughest engineering challenges. SOCIAL QUICK LINKS LANGUAGES NEWSLETTER Interested in the latest news and articles about ADI products, design tools, training and events? Choose from one of our 12 newsletters that match your product area of interest, delivered monthly or quarterly to your inbox. About ADI Analog Dialogue English Careers Contact us Investor Relations News Room Quality & Reliability Sales & Distribution cc Sign Up (c) 1995 - 2015 Analog Devices, Inc. All Rights Reserved ICP09046653 Sitemap Privacy & Security Terms of use