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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.
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2012-04-30 TI intros gate drivers for powers devices
The UCC27511 and UCC27517 drivers claim to improve efficiency, reliability and power-density in applications such as off-line isolated power supplies, telecom modules, air conditioner systems, UPS and portable power tools.
2002-01-04 TI dual MOSFET gate drivers provide more current
The UCC37323/4/5 series enhanced, industry-standard footprint dual MOSFET gate driver ICs feature higher current and improved noise immunity and are drop-in replacements for popular MOSFET driver ICs.
2004-09-27 TI dc-dc controller includes adaptive gate drivers
Texas Instruments has developed a multi-phase synchronous dc-dc buck controller with integrated adaptive gate drivers.
2003-02-03 TI buck drivers eliminate diode conduction losses
The company's pair of synchronous buck drivers provide system power designers up to four percent more efficiency and up to 40 percent improved dissipation.
2004-02-10 The importance of OLED drivers in TFT apps
The information display has become the visual interface between humans and systems with CRTs dominating the display market for tens of years.
2006-02-23 TFT LCD drivers use TSMC's 0.18m process
Sunplus Technology announced the availability of two system-on-a-chip TFT LCD drivers.
2007-07-25 System keeps drivers from the wrong lane
A new driver assistance function aimed at preventing motorists from driving inadvertently against traffic on motorways is under development at Siemens VDO.
2002-06-26 Synmo commences production of touchscreen panels, drivers
Synmo Optoelectronics Inc., a subsidiary of Pan Jit Int. Inc., has commenced production operations for touchscreen panels and drivers, with a current paid-in capital of $3.52 million.
2007-09-17 Switch drivers simplify design validation
Agilent Technologies Inc. has released attenuator/switch drivers designed for both bench-top and ATE environments.
2003-02-17 STMicro ships LCD drivers for XGA, SXGA displays
STMicro has introduced the ADE3700 family of analog input LCD display engines for XGA and SXGA resolutions.
2007-04-18 Stepper motor drivers feature auto start function
AMI Semiconductor's enhanced single-chip stepper motor driver and control ICs feature an automatic start function that allows a stepper motor to start automatically when powered up.
2007-03-20 ST's new column drivers target Asia's LCD OEMs
ST developed a cost-effective LCD column driver in its Asia-Pacific Design Center in Singapore, close to the center of major LCD-panel production to minimize time-to-market.
2013-01-16 ST sees power, sensors as technology drivers of 2013
STMicroelectronics EVP Francois Guibert forecasts that silicon advancements in 2013 and succeeding years will be focused on power and sensor technologies.
2005-06-28 ST rolls out new motor drivers
STMicroelectronics introduced a family of monolithic motor drivers that form the heart of an open, scalable solution for a wide range of motion control apps.
2002-02-27 SSL display ICs, drivers support i.250 platform
Solomon Systech Ltd has announced that its SSD18XX and SSD17XX series of display ICs offer support for Motorola's 2.5G Innovative Convergence (i.250) platform.
2004-11-29 Software drivers for the M59DR032E flash memory
This app note provides library source code in C for the M59DR032EA and M59DR032EB flash memories using the new STFL-I software driver interface V2.
2004-11-30 Software drivers for the M58LR128FT and M58LR128FB flash memories
This app note provides library source code in C for the M58LR128FT and M58LR128FB flash memories using the new STFL-I software driver interface V2.
2004-11-29 Software drivers for the M29KW064E LightFlash memory
This app note demonstrates how to use the library source code in C for the M29KW064E LightFlash memory using the new STFL-I software driver interface V2.
2004-11-29 Software drivers for the M29KW032E LightFlash memory
This app note demonstrates how to use the library source code in C for the M29KW032E LightFlash memory using the new STFL-I software driver interface V2.
2004-11-29 Software drivers for the M29KW016E LightFlash memory
This app note discusses library source code in C for M29KW016E LightFlash memory using the new STFL-I software driver interface V2.
2004-09-01 SMIC launches high-voltage process for LCD drivers
Chinese silicon foundry provider Semiconductor Mfg Int. Corp. (SMIC) on August 27 announced the development of a high-voltage process technology.
2007-09-06 Small WLED drivers tout 92% efficiency
Maxim Integrated Products had released the MAX8901A/MAX8901B claimed to be the smallest, highest efficiency white-LED (WLED) drivers, achieving up to 92 percent efficiency.
2007-05-11 Small LED drivers target portable apps
Micrel Inc. claims to have developed the industry's tiniest and most powerful LED driver for portable applications that enables designers to enhance integrated cameras with a high-brightness LED flash while keeping board space and battery life to minimum levels.
2004-04-19 Sipex transceiver includes 5 drivers, 3 receivers
The RS232 transceiver from Sipex is claimed by the company as an ideal solution for PC to cellphone data cables used to upload or download data.
2008-03-27 Single/dual MOSFET drivers feature adjustable LDO
Maxim's MAX15024/MAX15025 single/dual MOSFET drivers integrate an adjustable LDO that provides gate-driver amplitude control and optimization.
2008-03-10 Single-phase brushless DC motor pre-drivers blow fans
The first device in a series of single-phase brushless DC motor pre-drivers used to control high current fans, blowers or pumps, has been launched by Allegro MicroSytems.
2010-08-16 Single-coil latching relay drivers
A single-coil latching relay is a relay with memory, usually with a magnetic structure that provides two stable positions for the armature that holds the movable contacts.
2012-05-07 Single-chip drivers LIN-ready for BLDC motors, actuators
Melexis' new family of driver ICs claim highly efficient BLDC motor control from a single IC by combining the voltage regulator, LIN-transceiver, MCU, EEPROM, Flash, RAM and power FET pre-driver.
2011-01-19 Simple IC protects automotive video drivers from overvoltage
Here's a circuit that protects automotive video amplifiers from accidental exposure to the car's battery voltage.
2002-10-09 Silicon drivers for commercial IC products
This application note presents various CMOS chips utilized with GaAs IC switches and digital attenuators.
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