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LM3445 TRIAC Dimmable LED Driver

Provides full range, flicker free dimming

LED Driver for TRIAC Dimmers

National's industry-leading TRIAC dimmable offline LED driver solution is perfect for any application where an LED driver must interface to a standard triac wall dimmer. National’s new TRIAC dimmable LED driver delivers a wide, uniform dimming range free of flicker, best-in-class dimming performance, and high efficiency—all while maintaining ENERGY STAR® power factor requirements in a typical application.

Conventional TRIAC dimmers are designed to interface to a resistive load (halogen or incandescent bulb), while today’s LED driver solutions interfaced to a standard wall dimmer produce 120 Hz flicker of the LED and/or do not allow 100:1 dimming. National's LM3445 LED driver decodes the TRIAC chopped waveform and translates the signal to dim the LEDs, to achieve a full, wide dimming range, without flicker.

LM3445 TRIAC Dimmable LED Driver

• Application voltage range from 80 VAC to 270 VAC
• Integrated 300Ω bleeder resistor to ensure proper TRIAC signal decoding
• Patent-Pending control architecture allows for constant ripple current which extends the life of the LEDs
• Scalable output current up to and greater than 1A
• Master/Slave control for uniform dimming across multi-channel applications
• Ideal dimming solution for MR16 & PAR20, PAR25, PAR30, PAR38 LED bulbs

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