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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| 2007-11-22 | TFFC LED shines 200 lumens in cool-white Philips Lumileds announced its cool-white Luxeon K2 LED with thin-film flip-chip technology. |
| 2012-12-28 | Temperature sensing sol'n geared for LED MOCVD LumaSense Technologies' UV 400 and UVR 400 pyrometers help manufacturers using MOCVD improve efficiency and reduce waste in their LED manufacturing process. |
| 2011-01-19 | Temp sensor IC enables efficient LED lighting Seiko Instruments Inc. (SII) launches the S-5855A Series of pulse width modulation (PWM) output temperature sensor IC for LED lighting designs. |
| 2005-06-21 | TEL led display equipment rankings in '04 Japan's Tokyo Electron Ltd (TEL) was the world's top equipment supplier for flat-panel displays in a market dominated by Japanese vendors in 2004, according to VLSI Research Inc. (See rankings table below). |
| 2005-06-13 | Taiwan unveils plug-in ready ac LED, blue laser DVD PUH The Industrial Technology Research Institute's Optoelectronics & Systems Laboratories (OESL) in Taiwan has developed an LED that can operate under 110V AC. |
| 2008-04-23 | Taiwan LED makers shine in the market The total operating revenue of Taiwan LED companies this March hit $188 million, up 18.4 percent m-o-m compared to the prior month's $161 million and up 17.17 percent y-on-y. |
| 2004-08-11 | Taiwan LED makers report mixed July results Taiwan LED makers Opto Tech Corp., Epistar Corp. and Unity Opto Technology Co. Ltd have posted mixed revenue results in July 2004. |
| 2004-02-09 | Taiwan LED makers push expansion plans According to Photonics Industry & Technology Development Association (PIDA), Taiwan has produced about 4.3B units of super bright blue LEDs, reaching a market value of $830M, in 2003. |
| 2002-12-24 | Taiwan LED lamp makers to increase production capacities Everlight Electronics Co. Ltd, Harvetek Corp. and Bright Led Electronics Corp. have announced plans to boost their production capacities for surface-mount LED lamps. |
| 2012-07-13 | Taiwan LED industry to face challenges in 2H12 Due to the combined effects of the European debt crisis and the lukeware economic outlook, Taiwan's LED industry faces serious challenges moving toward the end of 2012. |
| 2004-03-16 | Taiwan LED industry on track to reach $1B threshold Production value of LEDs manufactured in Taiwan is forecast to cross the $1 billion mark this year, according to the Industrial Technology Intelligence Services (ITIS). |
| 2006-04-26 | Taiwan LED companies post strong growth last month Taiwan LED makers posted robust sales last month, with South Epitaxy leading the line with an almost 300 percent year-on-year growth. |
| 2011-06-22 | Taiwan 2012 LED revenues to surge to $6.8B Taiwan's LED industry revenues are likely to surge by 32 percent next year to reach $6.8 billion from this year's projected $5.2 billion revenues. |
| 2006-04-12 | Tact switch features two LED's in any color combination Knitter-Switch's TSSL 3W illuminated tact switch is ideal for use in applications where tactile response, small size and LED illumination is required. |
| 2006-03-09 | Switches feature LED illumination Designed for front-panel applications, Lumex's Chroma LED family of switches feature LED illumination in a variety of colors and styles including toggle, rocker and pushbutton. |
| 2008-02-05 | Survey confirms LED lighting market growth A survey taken at the recent 2007 Hong Kong International Lighting Fair validated the strong global growth for LED lighting applications, according to Cree Inc. |
| 2007-09-18 | Surface-mount white LED achieves 30 lumens flux Toshiba America Electronic Components Inc. (TAEC) has expanded its family of white LEDs with a new device that can provide a typical flux of 30 lumens from a driving current of 250mA. |
| 2004-02-05 | Supra Opto develops ZnSe-based white light LED lamps Supra Opto Inc. has completed the development of a Zn-Se-based white light white light in cooperation with Sumitomo. |
| 2005-08-25 | Supertex LED driver with PFC simplifies street lighting Supertex' HV9931, an off-line driver for single high-brightness LEDs, includes a power factor correction stage that suits the chip to traffic signal, street lamp and decorative lighting applications. |
| 2005-12-05 | Supertex LED driver IC with wide input voltage range Supertex unveiled a new LED driver IC designed to provide high LED current accuracy and a very wide input voltage range of 9V to 250V. Target applications include RGB backlighting, automotive lighting, and battery powered LED lamps. |
| 2005-08-05 | Supertex LED driver IC delivers 30mA regulated output current The new 3-pin switch-mode LED driver IC with a regulated output current of 30mA from Supertex can be operated from either a rectified universal AC line range of 85Vac to 264Vac or 20Vdc to 400Vdc. |
| 2013-04-29 | Supertex intros high brightness LED driver The HV9910C is an open loop, current mode, universal LED driver IC geared for general and decorative LED lighting, flat panel display backlighting and other DC/DC or AC/DC input based applications. |
| 2007-11-23 | Super-bright LED achieves 250 lumens Osram Opto Semiconductors plans to launch its Diamond DRAGON super-bright LED in January 2008, which achieves brightness of up to 250 lumens. |
| 2004-03-10 | Super Vision obtains LED lighting patent Super Vision Int. Inc., a fiber optic and LED lighting manufacturer, has acquired from High End Systems Inc. of Austin, Texas the exclusive rights covering the invention of a "Variable Color Lighting System." |
| 2009-01-26 | Sunon unveils low-noise LED cooling module Sunon has developed a LED indoor lighting cooling module solution combining elastic designs of fans and cooling modules. |
| 2004-05-21 | Sumitomo to buy $160M LED chips from Cree Sumitomo Corp. has agreed to purchase $160 million worth of Cree Inc. LED products in June 2005. |
| 2012-04-23 | Subsidies in China boost LED outdoor lighting The government will offer 30 percent subsidy that will drive outdoor LED lights to reach one million units this year, and the orders generated by it are expected to go to major companies. |
| 2008-12-24 | Study: LED lighting could reap $1.8T savings The emerging solid-state lighting that replaces incandescent and fluorescent bulbs with LED can reap enormous savings in cost, natural resources and pollution, according to a study by Rensselaer Polytechnic Institute. |
| 2002-06-28 | STMicro LED driver suits automotive light clusters The STLC1 LED cluster driver from STMicroelectronics integrates input buffers, individual low-side drivers, and a remote indicator for lamp failure. |
| 2004-11-15 | STMicro boost converter drives white LED with high efficiency STM disclosed that they have developed a special part to drive the white LEDs that are becoming popular for color LCD backlighting or portable devices. |
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