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LED driver What is an LED driver? Search results

What is an LED driver?
Regardless of type, size, or power, all LEDs work best when driven with a constant current source since LED color changes with small variations in driving current. LEDs often support varying system voltages and forward voltages, which can cause variations in LED brightness and color.
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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2005-02-17 LED driver offers consistent LED brightness, extended battery life
The new SC606 charge pump white/color LED driver from Semtech can power up to six LEDs in a configuration that is suitable for advanced PDAs and cellphones.
2007-12-18 LED driver offers alternative to '604 standard
Catalyst's quad-mode fractional charge pump LED driverthe CAT3604Vprovides an alternative to the industry-standard '604 with similar functionality.
2006-09-11 LED driver needs no external MCU, switch-mode converter
Maxim said its new LED driver has a unique architecture that eliminates the need for external controllers.
2006-12-07 LED driver maximizes power transfer
Power Analog Microelectronics has launched a family of LED drivers comprised of the PAM2701, PAM2800 and PAM2801
2006-04-19 LED driver maximizes battery life
Catalyst expanded its family of LED drivers with the CAT3612, a fully programmable, 300mA camera flash LED driver.
2010-04-27 LED driver LSI enables highly flexible designs
Panasonic Semiconductor Co. has developed a LED driver LSI that provides high flexibility in design.
2007-11-19 LED driver lights up your photos
Catalyst's LED driver drives LED strings up to 22V, making it suitable for digital photo frames and other backlighting applications where high LED countsup to 40 LEDsare used.
2010-02-26 LED driver integrates power factor correction
The ICL8001G LED driver from Infineon enables up to 90 percent efficiency and is the only primary controlled off-line LED drive with integrated Power Factor Correction.
2005-02-04 LED driver includes PWM controller, oscillation circuit
The NJU6061 RGB LED driver from NJR includes a PWM (pulse width modulation) controller, LED drivers, oscillation circuit and 8bit serial interface.
2005-01-24 LED driver includes all necessary components in one package
Vishay unveiled what it claims as the smallest fully integrated universal constant-current control one- and two-channel LED driver that includes all necessary components in a single package.
2010-05-31 LED driver improves high-brightness lamp reliability
Diodes Inc. has introduced a multi-topology LED driver IC designed to increase the reliability of high brightness lamps in automotive, industrial, and commercial lighting systems.
2009-03-30 LED driver IC touts voltage, current protection
Infineon Technologies AG has introduced a low-cost LED driver IC that features precise current control, thermal protection, and over-voltage and over-current protection functions. The IC produces no electromagnetic radiation and is well-suited for applications sensitive against EMI.
2010-11-11 LED driver IC supports automotive head, tail lights
NXP Semiconductors N.V. has just announced the availability of fully integrated, highly flexible driver IC solutions designed for vehicle LED headlights and tail lights, based on automotive-qualified technology.
2010-12-13 LED driver IC reduces switching power loss for improved performance
Improved efficiency offered by Renesas' R2A20134 LED driver IC
2011-11-17 LED driver IC come in 2mm package
The 2mm package allows the driver board to be placed behind the LED PCB, enabling the illumination along the entire length of the lighting tubes.
2008-01-21 LED driver has silent error detection feature
Macroblock has expanded its line of constant current LED driver with silent error detection with the MBI5039 device aimed at LED panel applications.
2007-09-03 LED driver has on-chip oscillator for brightness control
Allegro MicroSystems Inc. has introduced a three-channel constant-current LED driver with an on-chip oscillator for programmable brightness control.
2006-10-04 LED driver has error-diagnostic feature
Bringing new functionality to traditional LED driver chips, austriamicrosystems' AS1109 integrates LED error-diagnostic readback circuitry for detecting open and shorted LEDs and thermal anomalies.
2008-11-12 LED driver handles up to 60 white LEDs
Linear Technology announces the LT3598, a 45V, 2.5MHz DC/DC boost mode converter designed to operate as a constant current LED driver for up to 60 white LEDs.
2010-02-19 LED driver handles high-brightness, mid-size displays
Endicott Research Group has developed a new range of Smart Force plug-and-play LED driver solutions with enhanced features for high-power, high-brightness mid-size LED-backlit displays.
2013-03-04 LED driver for LCD TVs touts intelligent digital control
The iW7011 from iWatt is a 6-channel LED driver that claims to reduce BOM cost and simplify design of edge-lit and direct-lit LCD TVs.
2011-04-08 LED driver features DOT Correction
Linear Technology introduces the LT3746, a 32-channel LED driver integrated with a 55V step-down controller.
2007-02-27 LED driver features advanced error diagnostics
The AS1110 16-channel constant current LED driver austriamicrosystems has advanced error diagnostics that's easy and intuitive to use.
2009-02-12 LED driver extends battery life in mobiles
Advanced Analogic Technologies Inc. has launched the AHK3292 two-channel LED driver for LED indicators and LCD or keyboard backlighting in entry level mobile products.
2010-05-24 LED driver equipped for outdoor, tunnel lighting apps
XP Power is rolling out the DLA series of AC input LED drivers with IP67 rating making them suitable for outdoor apps such as street, tunnel, stage or architectural lighting and traffic signals
2010-04-05 LED driver ensures equal brightness in portable apps
Fairchild Semiconductor has introduced the FAN5341 highly-efficient LED driver solution that improves brightness and resolution in portable designs.
2007-07-03 LED driver enables real-time automatic luminance control
Seiko Epson Corp. has developed the S1F87110, a new automatic luminance controller IC that allows automatic control of backlight luminance in real time.
2010-12-08 LED driver enables phase-based dimming for high-bright apps
National Semiconductor introduced the LM3450, a new LED driver that enables phase-based dimming performance for high-brightness LED applications.
2008-03-18 LED driver eases interface control for backlighting
The new CAT3637 from Catalyst addresses the requirements for high-efficiency and easy LED programming in portable products, with 10-percent higher efficiency and a simple, 1-wire EZDim interface control
2010-09-30 LED driver dynamically adjusts supply voltage
National Semiconductor's LED driver boasts array of features to reduce system cost
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