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.

National Semiconductor Corp. (NYSE:NSM) (Santa Clara, CA) has 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.  Additional features include:

• Dynamic hold circuitry, coupled with a programmable, intelligent dimming decoder, that ensures smooth, consistent illumination across the full dimming range. 
• Active power factor correction that ensures a high power factor that complies with residential and commercial Energy Star standards.
• An accurate output that maintains an excellent power factor at the input.
• A phase angle that is remapped to a 500 Hz PWM output to dim the LEDs. 
• 10 Watt to 100 Watt loads.
• An analog adjust input that allows for differentiation such as thermal foldback, interface to sensors, or dimmer range adjustability.
• Available in single- or 2-stage configurations.

For more information visit www.national.com.