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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| 2005-02-07 | NJR LED driver provides 18V-output voltage The NJU6049 from NJR is a high efficient white LED driver that contains a high efficient step-up dc-dc converter and 20mA-output driver. |
| 2002-02-12 | Nichia white LED boasts increased brightness Nichia announced the development of surface-mount white LEDs that have a luminous intensity 50 percent higher than their current products. |
| 2010-12-08 | Nichia reigns over $10 billion LED market IMS Research reports that the LED industry has rapidly grown this year, driven by economic recovery, lighting and above all backlights, to reach about $10 billion. |
| 2002-03-07 | Nichia increases LED power by 10 times The company has announced the development of high-power InGaN LEDs that achieve 10 times the electrical power of current devices. |
| 2009-06-17 | New TSMC CEO eyes LED, solar markets Foundry giant Taiwan Semiconductor Manufacturing Co. Ltd has named Morris Chang as CEO, along with his current position as chairman, effective June 12. |
| 2005-06-27 | New system LED drivers tailored for compact LCDs in mobile apps Rohm developed new system LED drivers targeted for the backlight LEDs used in compact LCDs in mobile equipment such as PDAs, DSCs, DVCs and can also be used as supplementary light as a flash in mobile phone cameras. |
| 2005-05-16 | New solution from Macroblock targets high power LED apps Targeting the emerging market of high power LEDs, Macroblock announced the availability of its new MBI1802 that features an output current of up to 360mA. |
| 2005-02-11 | New RGB LED chip is 0.6mm thin BivarOpto has developed an ultra-thin [0.6mm) surface mount RGB (red, green, blue) device featuring individual addressable die for exact color mixing and matching. |
| 2005-11-25 | New LED-based light strips are plug-and-play ready American Bright Optoelectronics' new LED-based light strip assemblies is designed for use in a variety of lighting apps, including medical equipment, architectural lighting and other interior applications. |
| 2009-01-16 | New LED materials to boost solid-state lighting More efficient LEDs are increasingly being used for solid-state lighting and researchers say that technology advances could even expand their use. |
| 2005-09-02 | New LED driver from austriamicro austriamicrosystems extended its LED driver family with the release of the AS3691 4x400mA LED driver, designed for the fast-growing high and ultra high brightness LED application market. |
| 2006-07-18 | New LED display offers alternative to plasma module Designed as a drop-in compatible replacement for the popular APD-128G032 plasma display module, Vishay's LED-128G032 promises high brightness and superior viewing characteristics in a slim package. |
| 2005-11-29 | New LED chips from SDK Showa Denko K.K. launched gallium-nitride-based near ultraviolet and green LED chips for use in general white lighting and backlighting of large LCD screens. |
| 2005-11-03 | New GPIO and LED drivers from Maxim Maxim Integrated Products expanded its serial-bus-controlled GPIO and LED drivers with MAX7319-MAX7329. |
| 2006-01-23 | New charge pumps for cellphone LED displays Linear Tech released low noise, high efficiency 1x/1.5x/2x multimode charge pumps for driving main, camera and auxiliary LED displays in cellphones. |
| 2008-04-16 | NCP101x LED flasher with Luxeon V Star LED This application note describes how to easily design simple, isolated AC/DC converter for powering Luxeon V Star LED in flashing mode. |
| 2005-05-06 | National rolls out new 'no-programming-required' LED driver National unveiled a "no-programming-required" Boomer audio-synchronized LED driver that gives designers the option of using I²C compatible pattern control or choosing automatic audio-synchronized pattern generation. |
| 2004-11-16 | National LED IC drivers suit handheld apps National announced a new family of LED IC drivers designed for portable handheld devices such as cellphones, smart phones, GPS and PDAs. |
| 2006-10-23 | National intros LED drivers for high-brightness LEDs National Semiconductor has introduced a new family of LED drivers designed to power the new generation of 1W to 5W, high-brightness LEDs found in automotive, industrial and general illumination applications. |
| 2004-12-23 | National dc-dc converter tailored for white-LED apps The new step-up dc-dc converter from National is designed for use in white-LED apps such as color display backlighting, cellular phones and PDAs. |
| 2012-10-29 | Nanorods pave the way for better LED displays Collaborative work between researchers from the University of Florida and CHESS has resulted in a novel way to make colloidal "superparticles" from oriented nanorods of semiconducting materials. |
| 2005-11-10 | NanoMarkets: HB-LED market to hit $10.8B by 2010 The combined market for high-brightness LEDs (HB-LEDs) will grow from $5.0 billion in 2006 to $10.8 billion in 2010 and reach $17.4 billion in 2013 |
| 2007-04-11 | Multitier LED indicator assemblies suit SMT apps Bivar has introduced a multitier LED indicator assembly, considered the first of its type for surface-mount applications. |
| 2007-09-25 | Multistring white LED driver has 91% efficiency Semtech has released two integrated, multistring white LED drivers that feature 91 percent efficiency at maximum load for improved thermal conditions and longer battery life in portable apps. |
| 2000-05-30 | Multiplexing LED Drive and a 4x4 Keypad Sampling This application note describes a method that uses only 16 I/O pins of a PIC16C5X microcontroller to sample a 4-by-4 keypad, and directly drive four seven-segment LEDs. |
| 2006-06-05 | Multiplexer module targets LED projection apps Bookham's multiplexer module is designed for RPTV and pocket projectors that use LED instead of UHP lamps. |
| 2007-02-26 | Multimode white LED driver delivers 400mA Linear Technology has announced the LTC3218, an inductorless high-current white LED driver that delivers up to 400mA of LED current. |
| 2008-12-09 | MultiLEDs eye LED video displays Osram Opto Semiconductors Inc. has launched two new MultiLEDs for LED video displays. The new MultiLEDs are targeted at high-resolution video display applications that require high brightness and high color fidelity from all viewing angles. |
| 2011-06-01 | Multifunction connector supports LED apps Hirose has developed a compact 2mm pitch, multifunctional connector system that provides wire-to-board, board-to-board joint and short-circuit sockets. |
| 2007-11-13 | Multi-SMD high-brightness LED offers separate RGB control A multi-SMD tri-color LED with a wide luminous intensity range and independent color control has been released by Vishay Intertechnology, Inc. |
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