LED Drivers
Power Integrations Expands Popular LinkSwitch-PH Family of LED Driver ICs for General Lighting
Power Integrations today announced seven new members of its popular LinkSwitch-PH family of LED driver ICs. Optimized for industrial and commercial settings where high efficiency and system longevity are dominant requirements, the new devices (LNK413-LNK419) are suitable for lighting applications ranging from 3 W bulbs to 55 W replacements for fluorescent lighting fixtures. The devices, which can achieve up to 88% efficiency, feature a PWM-dimmable single-stage controller with both power factor correction (PFC) and accurate constant current (CC) power conversion functionality. The integrated PFC and CC functions allow multiple drivers to be connected in parallel to drive exterior and street area lights efficiently and with functional redundancy.
Maxim's LED solution enables drop-in replacements for halogen MR16 lamps
Maxim introduced the MAX16840, an LED driver that employs a proprietary architecture to ensure flicker-free, dimmable operation with electronic transformers and cut-angle dimmers. Maxim's patent-pending approach enables the design of retrofit LED lamps that can replace halogen MR16s without any changes to the existing electrical infrastructure. This removes an important obstacle to commercial viability, allowing end users to enjoy all the benefits of LED lighting with substantially lower deployment costs.
LD015D AC-DC Constant Current LED Driver Power Supply
Power Sources Unlimited, Inc. announces the LD015D Series AC-DC Constant Current LED driver power supply. Fully potted, suitable for dry and damp locations. UL1310 Class 2 Safety Standards (110VAC) or CE compliant (230VAC). Compact size maximizes design flexibility, 3.35" (L) x 2.13" (W) x 1.28" (H) form factor 16.8Watts, dual wire AC Input and DC output connections.
Power Integrations Introduces Reference Design for 5 W LED Lamps with PFC and Flicker-Free TRIAC Dimming
Power Integrations today announced a new reference design (RDK-251) for a 5-watt offline LED driver that includes flicker-free TRIAC dimming and single-stage power factor correction (PFC). The reference design is based on Power Integrations' LNK457DG, a member of the innovative LinkSwitch-PL family of LED driver ICs optimized for compact, non-isolated installations.
LED drivers from ERG are drop in replacements for CCFL inverters
Display power supply specialist Endicott Research Group (ERG) Inc. has announced new package configurations that offer footprint-compatibility with their existing CCFL inverter designs.
Renesas - R2A20134 LED Driver IC for LED Lighting Applications Offers Reduced System Cost, High Efficiency and a High Power Factor
Renesas announced the availability of its R2A20134 LED driver IC that supports LED lighting applications with high efficiency and a high power factor at low cost. The market scale of the LED lighting field is expected to grow substantially, spurred mainly by the adoption of LED lighting as a replacement for incandescent light bulbs. Since LEDs use direct current drive, it is necessary to convert the commercial alternating current power supply to direct current.
National Semiconductor - LED Driver with Industry’s Best Dimming Performance
National Semiconductor introduced a new LED driver with the industry's best phase-based dimming performance for high-brightness light-emitting diode (LED) applications. The LM3450 LED driver integrates active power factor correction (PFC) and phase dimming decoding to provide uniform, flicker-free illumination across a wide, programmable dimming range. A member of National's PowerWise® energy-efficient product family, the LM3450 is well-suited for use in high-performance, phase dimmable, 10 Watt to 100 Watt LED fixtures.
Toshiba Electronics expands range of constant current LED drivers with highly integrated and accurate 16-channel device
Toshiba Electronics Europe has announced a new high-accuracy, highly integrated LED driver that incorporates sixteen channel constant-current outputs. Ideal for LED panel displays requiring brightness consistency across multiple LEDs, the TC62D776 maintains constant currents of between 1.5mA and 90mA. High-accuracy control is guaranteed as a result of channel-to-channel and IC-to-IC output tolerances of ±1.5%.
AMLD-Z: DC/DC LED driver with Pout up to 48watts
With the release of AMLD-Z, Aimtec launches the third series in its line of DC/DC LED Drivers. Offered in a DIP24 packages, the AMLD-Z are feature rich LED drivers that meet the rigorous demands for environment friendly LED lighting solutions.
austriamicrosystems announces first 4-channel LED driver IC with dedicated 3D TV features and unique power feedback regulation
austriamicrosystems (SIX: AMS), a leading global designer and manufacturer of high-performance analog ICs, has announced the AS3696, a new 4-channel LED driver IC that ensures the brightest and most brilliant video images. Designed for edge lighting in LCD televisions, the AS3696 is the first to include a special control mechanism for 3D effects and extends austriamicrosystems' portfolio of LED BLU (backlight unit) drivers for the next generation of LCD TVs.
ZMDI energy-efficient low-voltage LED driver ICs “light up” battery-operated devices in ultra-small package
ZMD AG, a global supplier of energy- efficient analog and mixed-signal solutions for automotive, industrial, consumer, and medical applications, launches the second wave of its ZLED family of LED control solutions with two new low-voltage ICs designed for battery-powered handheld devices. The ZLED7012 and ZLED7022 incorporate low-noise, constant-frequency charge pump DC/DC converters that can efficiently drive up to four (ZLED7012) or six (ZLED7022) strings of LEDs. The devices come in the ultra-small UTQFN package (2mm x 2mm) and require only three external components for operation thus enabling a very low bill of material.
High-efficiency fault-tolerant LED driver with wide input voltage range
High-efficiency fault-tolerant LED driver with wide input voltage range- Fully integrated solution provides 240 mA total current across two channels
Intersil's New LED Driver Family Features Ultra-Low Dimming to Maximize Battery Life in Portable Products
A new family of innovative multi-channel LED drivers from Intersil Corporation, provides an ultra-low dimming capability that can significantly extend battery life in notebook, netbook and tablet computers.
ROHM LED Driver Targets Automotive Headlamp Cluster Functions
ROHM Semiconductor announced the availability of the Model BD8381EFV-M high-brightness LED driver for automotive forward illumination applications. With this new flexible IC, designers can now specify the same driver for use in high-beam, low-beam and daytime running light (DRL) circuits.
Four-channel constant-current LED driver ICs
A new family of constant-current LED driver ICs designed to address the emerging requirements of internal and external illumination applications in the automotive market is now available from Allegro MicroSystems Europe.
Compact LED driver range features TRIAC dimming option and easy installation
Sunpower (UK)'s new indoor range of LED drivers makes LED lighting more than ever the natural choice for domestic, commercial and industrial installations. Key to this new range is the AC Dimming (or phase cut) LED Driver product, which features compatibility with ordinary TRIAC dimmers. This makes 1 – 100% dimmable LED lighting as easy to install as traditional conventional dimming lights. Unlike earlier designs, these drivers require just a simple leading edge dimmer for dimming control, eliminating the need for external DC control circuits and additional installation rewiring. The dimming LED Driver's output voltage and current variants give contractors a wide choice of easy to install LED driving options.
AnalogicTech LED Backlight Drivers with CABC Save Power and Smooth Brightness Transitions in Handheld Devices
Advanced Analogic Technologies today introduced the AAT2868 and AAT2869 LED backlight drivers. The AAT2868 and AAT2869 are 1x/1.5x dual-mode, high-efficiency charge pump based white LED backlight drivers that drive four constant current LED channels and now offer content adaptive brightness control (CABC) or dynamic backlight control (DBC) to further reduce power consumption by up to 50 percent. To form a complete lighting solution, both devices include two linear low drop-out (LDO) voltage regulators.
Diodes' multi-topology LED driver raises performance of high brightness lighting systems
Diodes Incorporated has announced a multi-topology LED driver designed to increase the performance of high brightness automotive, industrial and commercial lighting systems. Operating in buck, boost and buck-boost modes, the ZXLD1374 LED driver with integrated 60V power MOSFET switch is capable of producing a maximum LED current of 1.5A. The IC uses high-side current sensing and patent pending control loops to achieve high accuracy current control of LED strings.
Toshiba Electronics- High-speed 16-channel constant current LED drivers with wide, high accuracy outputs
Toshiba Electronics Europe has launched two new LED drivers that deliver highly accurate constant currents of between 1.5mA and 90mA and offer high-speed serial data transfer rates up to 25MHz. The 16-channel TC62D748 and TC62D749 are ideal for high accuracy control of LED modules and LED displays built around multiple LED strings.
Ultra compact 60 Watt open frame AC LED Driver Series
RECOM has added a new series of 60 Watt open frame AC input LED drivers to its range of "LightLine" constant current LED drivers. The new products are approx. half the size of their competitors. The RACD60-Series offers a wide range of output currents and is available in five different versions to meet the current needs of any lighting system from 700mA up to 4.2Amps. The output current can be adjusted with an internal potentiometer to match any non-standard requirements.
New AnalogicTech LED Backlight Drivers with CABC Save Power and Smooth Brightness Transitions in Handheld Devices
Advanced Analogic Technologies, Inc. today introduced the AAT2868 and AAT2869 LED backlight drivers. The AAT2868 and AAT2869 are 1x/1.5x dual-mode, high-efficiency charge pump based white LED backlight drivers that drive four constant current LED channels and now offer content adaptive brightness control (CABC) or dynamic backlight control (DBC) to further reduce power consumption by up to 50 percent. To form a complete lighting solution, both devices include two linear low drop-out (LDO) voltage regulators.
Diodes' versatile 9-Channel LED drivers improve LCD backlighting performance with 93% efficiency and 1% channel matching
Diodes Incorporated announces two, 9-channel LED drivers with internal charge-pumps for backlighting of small-LCD screens, keypads and LED lights. Working from 2.7V to 5.5V and driving 20mA, the applications include mobile phones and other portable consumer devices. Driving three groups of three LED channels and its three independent PWM dimmable control inputs the AL3158 provides a simple drive for RGB LEDs. The AL3159 with its versatile 3-wire logic decoding of LED current control simplifies the driving of 9-LEDs for illuminating LCD screens and LED indicator control.
uModule LED String Drivers with 40VIN Transient Protection
Linear Technology introduced the LTM8042 and LTM8042-1, DC/DC uModule LED drivers for strings of up to 8 white LEDs or 9 red LEDs. Capable of operating as boost, buck or buck-boost with 3V to 30V input voltage range, each device is a complete LED driver solution in a 9mm x 15mm x 2.8mm LGA (land grid array) package. The LTM8042 and LTM8042-1 boast 0.5% output current line regulation accuracy and can withstand up to 40V input transients. The LTM8042 sources up to 1A of current, whereas the LTM8042-1 sources up to 350mA.
National Semiconductor - LED Driver with Dynamic Headroom Control for Automotive LCD Backlight Applications
National Semiconductor today announced the LM3492 LED driver with dynamic headroom control that accurately and efficiently drives current to two independently dimmable strings of LEDs. The LM3492, a member of National's PowerWise energy-efficient product family, maximizes system efficiency and reduces system complexity and cost in automotive LCD backlight applications.
RECOM launches new LightLine AC Input LED Drivers
After the success of its DC LED driver modules, RECOM has developed a new series of constant current LED drivers with universal AC inputs, power factor correction and UL certification. The first two products in the all inclusive RACD series are a 12W and a 20W solution to meet the needs of the high brightness LED lighting market. With universal AC input and constant current output of 350mA or 700mA, the RECOM AC input LED driver modules are suitable for driving almost any LED manufacturer's products and almost all LEDs systems in the industry as they have a very wide output voltage range over which the constant current regulation works. They can be used with single LEDs or with strings of up to 16 LEDs.
austriamicrosystems announces new high-precision LED driver ICs with lowest power consumption for next-generation TVs
austriamicrosystems has announced two new LED driver ICs that ensure the brightest and most brilliant video images. With the AS3695A -- a 16-channel white LED driver for direct lighting -- and the AS3695C -- a 16-channel white LED controller for edge lighting -- austriamicrosystems extends its portfolio of LED BLU (backlight unit) drivers and controllers for the latest generation of LCD TVs.
ON Semiconductor Introduces Low Power LED Driver Optimized for Coin Cell Powered Backlighting Applications
ON Semiconductor today introduced the CAT3661 - a new one-channel Quad-Mode™ LED Driver for ultra low power LED applications such as portable handheld medical equipment. "High efficiency and small size are often top of the agenda for designers of handheld electronics equipment," said Anthony Russell, director of LED Power Products, ON Semiconductor. "The CAT3661 low power Quad-Mode LED driver utilizes patented technology to fully address these needs and supports customers in launching new battery powered product designs that meet the needs of end users by combining small form factor and long battery life."
Super barrier rectifier from Diodes raises efficiency of LED drivers
With a forward voltage some 25% lower than standard p-n diode alternatives, the SBR1U400P1 super barrier rectifier from Diodes Incorporated has been designed to increase the efficiency of off-line LED drivers. This 1A, 400V rated part suits both bridge, with a 120VAC input, and buck stages of driver circuits. Applications include LED light bulbs, lighting ballasts, signage and street lighting.
LED driver from Diodes Incorporated simplifies low voltage low cost lighting design
Diodes Incorporated has announced an LED driver tailored to fit low voltage illumination products operating at between 6V and 30V. The AL8805, a 1A rated buck mode constant current switching converter, will support up to ten 3W LEDs connected in series, suiting a range of low cost 'safe electrical' designs including the ubiquitous MR16 lamp.
Synchronous Step-Down LED Driver Delivers Over 20A of Continuous LED Current
Linear Technology just announced the LT3743, a synchronous step-down DC/DC converter designed to deliver constant current to drive high current LEDs. The device's 5.5V to 36V input voltage range makes it ideal for a wide variety of applications, including industrial, DLP projection and architectural lighting. The LT3743 provides up to 20A of continuous LED current from a nominal 12V input, delivering in excess of 80 Watts. In pulsed LED applications, it can deliver up to 40A of LED current or 160 Watts from a 12V input. Efficiencies as high as 95% eliminate any need for external heat sinking and significantly simplify the thermal design. A frequency adjust pin enables the user to program the frequency between 100kHz and 1MHz so designers can optimize efficiency while minimizing external component size. Combined with a 4mm x 5mm QFN or thermally enhanced TSSOP-28 package, the LT3743 offers a very compact high-power LED driver solution.
TI’s Dual-output 200-ma Power Supply Improves Picture Quality In AMOLED Displays
Texas Instruments introduced a new 200-mA dual output power supply designed to provide improved picture quality for active matrix OLED (AMOLED) displays that require positive and negative supply rails. The TPS65137 uses a low dropout (LDO) post regulator for line and load transient response with minimum output voltage ripples to provide stable picture quality.
AnalogicTech Introduces Powerful, High-Efficiency Multi-String Backlight
Advanced Analogic Technologies, Inc. today introduced its AAT1409/7/5 family of multi-string LED backlight drivers. Offering integrated boost converters and precision current sinks that can support up to 88 LEDs at 360mA total LED current, the AAT1409/7/5 drivers are among the most powerful in the marketplace. These new drivers bring to market a fully featured solution that reduces the number of backlight PCBs, reducing costs, yet is capable of driving high brightness LEDs and ensuring uniformity across the display by precisely controlling the backlight intensity.
Fairchild Semiconductor Delivers High Conversion Efficiency for Smartphone Backlighting Applications
As the mobile handset market continues to grow and smartphone usage and market growth become significantly more prevalent, designers are challenged to add functionality while reducing the form factor and components in the overall design. Responding to customer needs and these trends, Fairchild Semiconductor developed the FDZ3N513ZT – an N-Channel and Schottky diode combination in a small 1mm x 1mm footprint.
Fairchild Semiconductor’s Linear LED Drivers Conserve Space in Portable Backlighting Applications
Space-constrained applications, such as handsets, glucometers and other portable devices that require illumination of LCD displays and keypads, now have a linear LED driver option that can save up to 60 percent board space compared to alternate solutions. The design of Fairchild Semiconductor's (NYSE: FCS) FAN5622/24/26 reduces overall component count by eliminating additional passive components used in charge pumps and series boost LED drivers. Fairchild's linear LED drivers simplify design with an easy-to-use control interface and a minimal amount of components.
Semtech Takes LED Driver Platform Offering to New Level with Its First 10-Channel Device in Ultra-Small, Low-Profile 4x4x0.6mm Package
Semtech today announced the SC442, its first 10-channel white LED driver with an integrated 3A boost power switch. The device is capable of driving up to 120 LEDs at up to 30mA per channel and is packaged in an ultra-small, low-profile 4x4x0.6mm, 28-pin MLPQ package. The high-density package, small external filter components, wide operating voltage range and high efficiency satisfy space constrained LED backlights serving LCD monitors and LCD-TVs. The high density LED driver is also ideal for ultra-bright displays exceeding 500Nits which serve medical, industrial, avionics and navigation markets, as well as digital signage applications.
Rugged high-voltage LED driver family wins UL safety approval
Sunpower's Power LED PLEC-120SxxxDT driver family has been approved to the UL 8750 safety standard. This international standard underwrites the family's LED lighting role, as it is specifically written for solid state lighting in a wide range of applications, many in demanding environments. The units have a -35˚C to +65˚C operating temperature range with no output derating.
45V, 750mA LED Driver for Boost, Buck or Buck-Boost High Current LED Applications
Linear Technology announced the LT3519, a 45V, high side current sense DC/DC converter designed to drive high current LEDs. The LT3519's 3V to 40V input voltage range makes it ideal for applications such as automotive and industrial lighting. The combination of an internal 45V, 750mA switch, Schottky diode and internal compensation provides a highly compact LED driver solution.
MAX16833: High-voltage HB LED driver enables more reliable, fault-tolerant automotive LED driver applications with lower EMI noise
Maxim Integrated Products announces the MAX16833, a high-voltage HB LED driver for boost, buck-boost, and buck configurations. The device's unique architecture offers comprehensive short-circuit protection, single-wire connection to LEDs, and internal frequency dithering. These features make it easier for designers to meet the demanding reliability requirements of high-power automotive lighting applications such as DRLs (daytime running lights), position lights, turn signals, and high-/low-beam assemblies.
Toshiba Electronics announces 9-channel constant current LED driver with I2C bus interface
Toshiba Electronics Europe has expanded its range of high-accuracy LED drivers with a nine-channel device that features an I2C bus interface and a constant current output drive capability of up to 50mA per channel.
ON Semiconductor’s New Integrated LED Driver Improves System Efficiency for Low Bay, Street and Architectural Lighting Applications
ON Semiconductor today announced the further expansion of its solutions for LED lighting with the introduction of an offline LED driver that integrates power factor correction (PFC) and isolated step-down AC-DC power conversion in a single stage. By eliminating the need for a dedicated PFC boost stage, the NCL30001 offers a reduced component count, lower cost solution that supports higher overall system efficiency in LED power supplies for applications such as LED-based street, low bay, wall packs, and architectural lighting.
