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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.
total search3151 articles
2008-01-16 CCFL backlight inverter drivers rid of up to 30 external parts
Fairchild's new CCFL backlight inverter driver ICs eliminate up to 30 external components in four lamp circuit inverter designs compared to similar devices on the market.
2005-08-25 Cathode-row display drivers simplify design of A/V apps
Maxim Integrated Products released new compact cathode-row display drivers that interface microprocessors to 8 x 8 dot- matrix red, green and yellow (R, G, Y) LED displays through a high-speed 4-wire serial interface.
2011-01-14 CAN PHY transceiver, MCU tip on-chip CANopen drivers
NXP's LPC11C22 and LPC11C24 SiP integrates a CAN transceiver, reducing board space by 50 percent.
2012-01-13 Board mounted LED drivers feature 5, 7, 14, 20W
The LDU series of PCB mount DC input constant current LED drivers tout typical efficiency of 93 percent for the 5-14W models and 95 percent for 20W devices.
2010-09-22 Barrier rectifier raises efficiency of LED drivers
Diodes Inc. recently introduced their SBR1U400P1 super barrier rectifier which is designed to increase the efficiency of off-line LED drivers.
2007-12-27 Backlight control algorithm targets LCD drivers
MagnaChip Semiconductor Ltd says it has developed the technology for Smart Mobile Luminance Control, a low power consuming backlight control algorithm for LCD driver chips.
2000-02-25 AVPro 5001 Quad A/V Drivers
This application note describes the AVPro 5001 device, an audio/video driver IC that supports four video inputs and two audio inputs for multimedia applications. This application note describes the AVPro 5001 device, an audio/video driver IC that supports four video inputs and two audio inputs for multimedia applications.
2013-06-18 Automotive LED drivers boast rating of up to 40V
The TLC6C598-Q1 and TLC6C5912-Q1 are monolithic, medium-voltage, low-current 8bit/12bit shift registers designed for use in systems that require relatively moderate load power, such as LEDs.
2004-10-01 Auto-biasing white LED drivers reduce overall power
The current-controlled boost converter consumes less power than a standard circuit high-voltage step-up converter with fixed-output voltage.
2005-01-03 Atmel laser diode drivers target PC drives, DVD recorders
Atmel's ATR084x family is designed for digital versatile disk with read/write function (DVDRW)/CD-RW combo drives.
2003-05-14 ARC releases new OTG device drivers
ARC Int'l has announced the availability of a new class of device drivers for Hi-Speed USB OTG apps.
1999-10-09 Applying modern clock drivers to MOS memories
This paper covers the practical aspects of using modern clock drivers in MOS memory systems. Information includes selection of packages and heat sinks, power dissipation, rise and fall time considerations, power supply decoupling, system clock line ringing and crosstalk, input coupling techniques, and example calculations.
2009-06-18 Applications of zero voltage crossing optically isolated triac drivers
This application note describes the operation of a basic driving circuit and the determination of circuit values needed for proper implementation of the triac driver.
2008-12-18 Applications of random phase crossing triac drivers
The MOC30XX family of random phase (non-zero crossing) triac drivers consist of an aluminum gallium arsenide infrared LED, optically coupled to a silicon detector chip. These two chips are assembled in a 6-pin DIP package, providing 7.5KVAC(PEAK) of insulation between the LED and the output detector.
2014-04-03 Apple eyes 55% stake in Renesas SP Drivers
Apple has reportedly offered Renesas Electronics $479 million for its stake in the LCD driver chip joint venture, with Sharp and Powerchip holding the 25% and 20% stakes respectively.
2010-03-24 Analysts highlight IC growth drivers
From their recent trips in Asia, Barclays Capital analysts enumerate growth areas to watch this year.
2007-09-12 AMD supports open-source drivers for Radeon GPUs
AMD announced that it has partnered with Novell's SuSE Linux engineering team on major strategic initiative to support open-source development community for ATI Radeon graphic processor.
2010-11-30 ALT Software drivers find place in avionics
Lockheed Martin has signed a contract with ALT Software Inc. for its embedded graphics display drivers and hardware support.
2002-01-15 ADI laser diode drivers enable dual-loop capability for 3.3V apps
The ADN2847 and ADN2848 laser diode drivers extend dual-loop capability to 3.3V applications.
2008-03-25 ADI debuts 'first' gate drivers with isolated power
ADIhas rolled what it claims to be the first isolated half-bridge gate drivers that incorporate isolated power and isolated gate drivers in one package.
2009-02-04 ADC drivers claim highest accuracy conversion
Texas Instruments has released a differential amplifier family, which is claimed to drive the highest accuracy data conversion across single- and multi-channel SAR and delta-sigma ADCs in a wide range of applications.
2007-02-27 ADC differential drivers tout 'lowest' distortion
The ADA4937-1 and ADA4938-1 ADC drivers from ADI combine the low noise and distortion levels required to drive the high-speed ADCs found in today's wireless infrastructure and instrumentation equipment.
2008-05-08 AAT3192/93: Low-cost, 2/3-channel charge-pump LED drivers
AnalogicTech's AAT3193 evaluation board demonstrates the functionality of the AAT3193 and its application as a white LED driver.
2013-02-15 60V DC/DC LED drivers target solid state lighting systems
The ILD6070/ILD6150 from Infineon offers the flexibility to produce multiple products using the same drivers, based on wide input voltage range and adjustable output current of up to 0.7A or 1.5A.
2007-10-22 600V gate drivers target three-phase applications
IR has introduced the IRS2336xD protected 600V three-phase gate driver ICs with integrated bootstrap functionality for appliance motor control, servo drives, micro-inverter drives and a wide range of general-purpose applications.
2012-01-12 4A, 5A MOSFET drivers protect from 100V surges
TI's two-output gate drivers can be used in motor drive systems and can improve efficiency and reliability in telecom, server and industrial power supply designs.
2006-10-24 3-phase motor drivers integrate PWM capability
Toshiba America Electronic Components Inc. is announcing three high-voltage three-phase motor drivers with built-in power management circuits for direct current brushless motors, air conditioner fans and pump motors.
2009-09-10 16-channel LED drivers provide high ESD protection
Toshiba has released a new family of integrated constant current LED drivers that offer very high levels of ESD protection while significantly reducing component count and board space.
2005-01-12 100-pin 8bit MCU eliminates need for external LCD drivers
Toshiba expanded its family of high-performance CMOS 8bit MCUs with a device that integrates 32KB of flash memory, an LCD driver circuit, and key peripherals and interfaces.
2006-05-05 'Intelligent' LED drivers enhance video signal processing
Macroblock's PWM-embedded LED drivers increase refresh rate and provide 16-bit color depths for better image and color processing of video display panels.
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