What is an LED driver?
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Regardless of type, size, or power, all LEDs work best when driven with a constant current source since LED colour changes with small variations in driving current. LEDs often support varying system voltages and forward voltages, which can cause variations in LED brightness and colour. An LED driver is a self-contained power supply that has outputs matched to the electrical characteristics of your LED or array of LEDs. There are currently no industry standards (as of 2009), so understanding the electrical characteristics of your LED or array is critical in selecting or designing a driver circuit. Drivers should be current-regulated (deliver a consistent current over a range of load voltages). Drivers may also offer dimming by means of pulse width modulation (PWM) circuits. Drivers may have more than one channel for separate control of different LEDs or arrays. |
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| 2008-11-13 | RGB LED drivers manage 7 LEDs in series Tokyo Electron Device Limited has launched TE7118PF, an RGB LED control driver ideal for LED control applications such as LCD backlights, indoor LED lighting, and LED illumination lights. |
| 2007-07-20 | RGB LED driver suits fun lighting in portable apps ON Semi has designed a triple-output LED driver for tricolor RGB LEDs, ideal for fun lighting and enhanced LCD backlighting in portable applications. |
| 2006-06-26 | RGB LED devices enable light of any color TT electronics Optek Technology has expanded its Lednium LED assemblies to include RGB devices capable of producing any color light. |
| 2006-05-25 | RGB LED backlights target handheld devices Displaytech Ltd offers a series of RGB LED backlights for its chip-on-glass (COG) LCDs with composite red, green and blue LEDs. |
| 2011-04-28 | Researchers enhance green LED light output Researchers at Rensselaer Polytechnic Institute have developed a new method that they claim will aid in manufacturing green-colored LEDs with greatly enhanced light output. |
| 2010-02-22 | Report: LED backlight costs dropping fast DisplaySearch's Quarterly LED & CCFL Backlight Cost Report found that 40-inch edge LED backlight unit cost in Q1 10 is $118 and will fall to $100 by Q4 10, driven by increasing production volumes. |
| 2009-05-20 | Reference design for a 3S3P Rear Combination Lamp (RCL) LED Driver This application note presents a reference design for a rear combination lamp (RCL) LED driver in a 3-series, 3-parallel (3S3P) configuration. |
| 2009-11-27 | Ref design eases high-efficiency LED apps dev't ON Semiconductor GreenPoint reference designs that will speed and simplify the development of high-efficiency LED-based lighting applications. |
| 2006-10-27 | Rectangular LED chips enable thinner displays The elongated chips from BridgeLux, available in 0.254-by-0.457mm and 0.254-by-0.584mm sizes, feature a rectangular shape, enabling thinner displays for mobile phones, PDAs, digital still cameras, MP3 players and notebook PCs. |
| 2012-10-04 | RECOM reveals high power LED drivers Aimed at street and outdoor lighting, the RACD100 and RACD150 series feature dual mode operation for either constant current or constant voltage. |
| 2007-09-17 | Recognize high-power LED thermal problems Designers attempting to create high-power LED systems are well served by understanding the thermal problems associated with LEDs. Smart thermal management will increase the operating temperature range, and thermal monitoring will maintain the accuracy of LED products. |
| 2006-12-05 | Receptacles ease LED replacement The LED receptacles from Mill-Max Mfg make it easier to replace LEDs by simply unplugging the header connector from the receptacle and replacing the LED unit. |
| 2004-07-06 | Ramtronics LED modules last 100,000h Ramtronics has expanded its product coverage with the release of the e-life 0001 LED module that is available in five colors. |
| 2006-10-10 | Radiant to invest $6M in LED supplier Radiant Opto-Electronics Corp. will invest at least $6 million in Bright View Electronics Co. Ltd, as well as establish a new plant in Donguan, Guangdong in mainland China. |
| 2010-09-22 | Quad-mode LED driver powers ultra-low-power applications New LED driver features quad-mode charge pump for high peak efficiency |
| 2009-05-28 | PWM intensity control for the MAX6964 LED driver This application note describes the unique features of the MAX6964 LED driver and how these features can be used properly in applications requiring intensity control. The application note also provides example programming routines showcasing the intensity-control selections for both master and individual port selections of the MAX6964. |
| 2006-08-28 | Pushbutton switch includes LED lighting The new single-station lighted pushbutton switch from Electro-Mech Components features a bright bi-color LED light source with a Fresnel lens button for high visibility and installation into small spaces. |
| 2008-05-09 | Pushbutton LED switches present multiple options NKK Switches has expanded the KP series of illuminated pushbutton switches with devices that include silent or audible actuation with shorter strokes, making it suitable for A/V applications. |
| 2008-01-30 | Programmable HB LED drivers enable greater versatility Maxim's MAX16816 is a high-voltage, high-power HB LED driver that provides many user-programmable features through on-chip non-volatile EEPROM registers. |
| 2003-06-06 | PROCOMP begins white-light LED production PROCOMP Group has commenced the mass production of white-light LEDs. |
| 2004-05-13 | Prime View, RiTdisplay collaborate on active-matrix LED R&D Prime View Int. Ltd is collaborating with OLED maker RiTdisplay Corp. in the development of 2.2-inch active-matrix OLED panels. |
| 2013-03-12 | Price drop boosts LED application High power LED ASP has fallen by 6-9 per cent, which LEDinside believes is not only due to the medium power LED price cut, but also agent conversion and the manufacturers' inventory reduction plans before the Chinese New Year Holiday. |
| 2005-08-25 | Prema serial 12V-LED driver handles up to three LEDs PREMA Semiconductor offers the new constant current driver PR4130 controlling up to three LEDs in series. |
| 2010-12-07 | Pre-wired LED arrays simplify integration for luminaire manufacturers Bridgelux Inc. is offering alternative wiring selections for its rectangular ES and RS Array Series solid state light sources, which simplifies LED light source integration for luminaire manufacturers. |
| 2011-05-09 | Powering LED-backlit LCDs using DC-DC topology (Part 2) Know the approaches and tradeoffs in supply topologies and configurations when powering LED arrays. |
| 2011-05-09 | Powering LED-backlit LCDs using DC-DC topology (Part 1) Learn about the approaches and tradeoffs in supply topologies and configurations, when powering LED arrays. |
| 2012-01-06 | Power supply geared for LED moving signs The HDP-190 with fanless design provides up to 3.8V/40A and 2.8V/22A at each output channel while HDP-240 with built-in DC fan provides up to 3.8V/50A and 2.8V/27.5A. |
| 2006-05-08 | Power saving tech boosts efficiency in white LED apps CMD's new power saving technology and PhotonIC products were designed to increase efficiency in white LED apps at the lowest BOM and the smallest footprint. |
| 2008-08-11 | Power LED emitters are efficient for lighting apps Avago Technologies has introduced a 1W warm white Moonstone power LED emitter for use in a variety of architectural, commercial, spot light, task, backlighting, and decorative lighting applications. |
| 2011-06-15 | Power IC allows low cost, small size LED driver Exclara has released the Exclara HVX family that enables low cost, small size LED driver solutions while improving efficiency, power factor and quality. |
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