Raising the Bar on Intelligent Lighting Solutions

Arrow Electronics, National Semiconductor, and Cree and have combined strengths to bring you an unprecedented dimmable LED driver board solution. Until now, TRIAC LED dimmer solutions have produced a 120 Hz flicker and have not allowed for full-range dimming. Our new, flicker-free and full-range dimmable solution features white LEDs on a programmable board, and maintains ENERGY STAR® power factor requirements in a typical application. Intelligence behind the board allows for new levels of sophistication in applications such as sensing.

Arrow has brought together the right partners for the optimal solution. Cree’s renowned XLamp® LEDs, National’s TRIAC dimmable LED driver board, and Arrow’s unrivaled technical know-how, services, and solutions raise the bar on intelligent lighting solutions.

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Key Features of the LM3445 Off-Line TRIAC Dimmer LED Driver Board Solution:

• Dimmable
• Flicker-free
• White LEDs
• Input: 90–135 VAC
• Output: 350 mA
• Load: seven series LEDs (configured for seven Cree XLamp MC-E pure white LEDs)
• Switching frequency: 225 kHz
• Efficiency: Varies on line voltage, Iout, and loads (approximately 85% as configured)

Download Reference Design

Featured Products:

National Semiconductor LM3445
National's TRIAC dimmable LED driver offers best-in-class performance as it decodes the TRIAC chopped waveform to dim the LEDs, achieving a full, wide dimming range without flicker. Download Datasheet>

Features:

• Application voltage range from 80 VAC to 270 VAC
• Angle detector/decoder enables wide (100:1) full-range dimming
• Integrated 300Ω bleeder resistor ensures proper TRIAC signal decoding
• Patent-pending control architecture allows for constant ripple current, which extends the life of LEDs
• Scalable output current up to and greater than 1A
• Master/Slave control for uniform dimming across multi-channel applications

Cree XLamp MC-E
This multi-chip LED package from Cree offers four times the flux of the XLamp XR-E—in the same footprint and with the same lighting-class performance. Individually addressable chips allow for complete system design flexibility. The MC-E can reduce LED system cost by reducing the number of LEDs and optics required. Download Datasheet>

Features:

• Electrically neutral thermal path
• High maximum LED junction temperature (+150º Celsius)
• Reflow solderable JEDEC J-STD-020C compatible
• RoHS compliant

Applications:

• Retro-fit of existing lighting systems that are interfaced to a TRIAC wall dimmer
• Industrial and commercial lighting
• Architectural lighting
• Residential lighting
• Commercial lamps
• Lighting for building municipalities (indoor/outdoor)
• Motion sensor activated lighting
• Street lamps

*Live demo for potential Arrow customers with valid opportunities, qualified by Arrow representatives.