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2009-09-03 Using RGB LEDs for multicolor sign applications
This technical article deals with the latest RGB LED package approaches for full-color indoor and outdoor displays, and technical considerations when designing these large full color displays.
2005-09-02 Sipex LED driver drives multiple LEDs from 16V input voltage rail
Sipex unveiled a linear constant current LED driver that is designed to drive multiple LEDs in series from a high input voltage rail (16V max).
2008-07-02 Find the right balance for multiple LED strings
There are many LED lighting applications for individual LEDs as well as multiple LEDs. The multiple LEDs can be placed in series, in a single string, or in two or more parallel strings. With multiple parallel strings, some current balancing techniques may be required to allow for LED parameter variations
2007-09-04 Control power and cost for multiple LEDs
TI's Brant Johnson discusses a power-efficient and cost-effective method for controlling multiple LEDs.
2005-09-01 Brighter LEDs drive automotive lighting
LEDs undergo further in innovations as the industry embraces this technology to meet car requirements
2015-12-17 1608-sized LEDs claim 75% reduction in brightness variation
The SML-D15 series from ROHM makes it possible to provide a single rank of brightness, significantly lightening design load for applications such as industrial equipment and automotive systems.
2015-02-09 Utilising LEDs for LCD backlighting (Part 1
Learn about the types of LED LCD backlight units, the market trends and technological developments, the advantages of LED LCD televisions, and the key points in the optical design of LED backlights.
2002-11-05 Thinner, brighter LEDs shine for PDAs
Two LED lines from Sharp Microelectronics of the Americas tout advances in package sizes, luminosity, and color reproducibility.
2006-09-11 RGB LEDs produce all colors in visible spectrum
TT electronics Optek Technology has developed a comprehensive range of discrete RGB LEDs to enable design engineers to create colors along the entire visible spectrum
2013-04-25 Prevent colour from becoming a problem in LEDs
Modern solutions nowadays are the application of colour sensors to achieve the feedback control loop.
2014-05-09 Optical channel model taps LEDs for positioning
The Epsilon system uses the most practical of materials for its infrastructure: visible LED lights and smartphone. It implements trilaterationtri-angulating the position of devices with a light sensor using LED lights.
2016-04-25 Novel sensor solution able to control LEDs
MAZeT's JENCOLOR line claims to be the first to include a true-colour filter function, integrated signal amplification based on charge-to-digital conversion, and an on-chip temperature sensor.
2003-02-13 Microsemi IC drives >100 RGB LEDs
The LX1991 six-channel LED sink driver from Microsemi Corp. is capable of controlling the brightness of >100 standard green, red, or yellow LEDs
2007-07-24 Medium size backlight NCP5050: Drive up to 120 LEDs
This application note illustrates how the NCP5050 white LED driver can be configured to drive multiple LED strings for LCD backlighting and how to expand the output voltage rating beyond its 20V rating
2012-02-22 Lenses geared for Cree's white LEDs
LEDiL released 33 lenses qualified for use with Cree's XLamp XT-E white LEDs that claim to deliver twice the lumens-per-dollar of other LEDs
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
2012-09-24 LED driver boasts multiple dimming control
TI's LM3463 is a six-channel LED driver that claims to maximise system efficiency and reduces complexity in LED area lighting applications, such as street, high-bay and ceiling lights.
2007-11-01 LCDs turn to LEDs for lighting
A change is likely to have occurred behind the scenes in display sizes below about 15-inches: the CCFL lighting system for the LCD is rapidly being replaced by LEDs
2007-11-01 Key-switch controller detects multiple press/release events
Maxim Integrated Products has released the MAX7359 2-wire interfaced, low-EMI key-switch controller that detects multiple key press and release events on up to 64 keys
2014-06-02 Identify electrically overstressed LEDs (Part 3
Here's a continuation of the discussion on the conditions that can induce electrical overstress and catastrophic failure. It focuses on the different types of failure mechanisms.
2014-05-27 Identify electrically overstressed LEDs (Part 2
This second instalment continues to look at the conditions that can induce electrical overstress and catastrophic failure. It also tackles some ways to minimise the potential for EOS.
2014-05-22 Identify electrically overstressed LEDs (Part 1
Understand the transient conditions that are benign to LED components and those that can induce electrical overstress and catastrophic failure, and know some ways to minimise the potential for EOS.
2008-07-16 Hysteretic converters for multiple LED lighting
Hysteretic converters are used to drive LEDs in lamp replacement and emerging lighting applications. The ease of use and inherent stability of the topology make it a first choice for efficient inductive switching regulator solutions. The simple topology can be used in different configurations or other unintended external applications
2007-10-25 High-voltage driver lights up 72 white LEDs
A LED driver capable of driving up to 72 white LEDs has been developed by Power Analog Microelectronics
2007-08-28 HB LED driver powers common-anode LEDs
Maxim Integrated Products claims that it has introduced the MAX16821 synchronous HB LED driver with rapid current pulsing, said to be the first to drive common-anode LEDs
2015-07-13 Drives LEDs efficiently with constant-voltage topology
Here is a look at an AC/DC single-stage driver for dimmable LEDs that combines digital control techniques with embedded algorithms
2006-09-26 Driver module loads up to 60W for high bright LEDs
Applied Concepts' I-DRIVE Series of LED driver modules provide up to 60W for high bright LEDs
2009-12-22 Driver IC handles up to 80 white LEDs
From a 12V input, the device drives 8 channels, each with up to 10 100mA white LEDs in series at 92 percent efficiency
2012-07-04 Converter drives LEDs in low voltage apps
ZMDI's ZSLS7025 boost LED driver for high-brightness LEDs is suited for driving multiple white LEDs connected in series from a low voltage supply.
2008-04-09 Controller drives high-brightness LEDs in series
Texas Instruments Inc. has introduced a 4.5-52V wide-input voltage, non-synchronous boost controller, intended for applications where the output is a regulated current instead of a regulated voltage.
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