National Semiconductor Introduces LM3450, New LED Driver with Phase-Based Dimming Performance
National Semiconductor introduced LM3450, 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.
The LM3450 LED driver integrates hold circuitry to dynamically adjust the current through the phase dimmer. The dynamic hold circuitry, coupled with a programmable, intelligent dimming decoder, ensures smooth, consistent illumination across the full dimming range. This combination of features provides the most efficient and uniform dimming performance in the industry. The LM3450 LED driver also provides active power factor correction, ensuring a high power factor that complies with residential and commercial Energy Star® standards.
The LM3450 LED driver regulates an accurate output while maintaining excellent power factor at the input. The integrated phase dimming decoder interprets the phase angle and remaps it to a 500 Hz PWM output to dim the LEDs. This combination of features is ideal for implementing a phase dimmable off-line LED driver for 10 Watt to 100 Watt loads.
The LM3450 LED driver is available now in a 16-pin TSSOP package and priced at $1.85 in 1,000-unit quantities.
LM3450 LED Driver with Industry’s Best Dimming Performance
(Photo from National Semiconductor Website)
More information about LM3450 LED Driver can be found at National Semiconductor Website
