Fairchild LED driver FL7701 to deal with smaller spatial dimming challenges

With LED lighting applications, especially the application of residential lighting is becoming more and more popular, designers are seeking more efficient than the TRIAC method and is suitable for the existing socket lighting solutions. In addition, these solutions must be able to work reliably in small spaces with high efficiency.

In order to help the designers to deal with this challenge, the Fairchild company developed with FL7701 intelligent power factor correction for non isolated buck LED driver. The device uses a digital technique to automatically detect the AC input voltage condition to generate a special internal reference signal to achieve high PF correction. The FL7701 can also operate at DC input voltage and automatically detect AC or DC input voltage mode. In the application of MR lighting, the traditional transformer technology will cause additional loss due to the converter efficiency. Now, the use of DC or AC with the direct input of the FL7701 connected directly, it can replace the traditional low efficiency method.

FL7701 LED drive with small size and high density function, allows the designer to save up to 20% of the total bill of material cost and board space of up to 60%. These features provide a solution for PCB space limited LED lighting applications, and support analog dimming.

Provide high reliability required high integration design FL7701, compared to the current service life of three years, can make the lighting to extend the service life of more than five years. Since the input, output or Vdd power supply of the FL7701 does not require an electrolytic capacitor, the reliability is further improved.

The digital distortion power factor and lower total harmonic, and 90% electrical efficiency, more energy saving for the terminal system. Together, these features allow FL7701 to save energy and meet the world's toughest regulatory requirements, such as the magnitude of the energy.

IC design technology Fairchild improves power efficiency (>90%), to provide high quality lighting required for residential applications. FL7701 uses SOP-8 package delivery, especially suitable for indoor decorative lamp; LED lamp or PAR lights under the spotlights, reflector lamps, MR lamps or mainstream E26/E27 or double pin socket, and LED lamp for low power lighting equipment.

Fairchild series provides a complete solution for medium and small power range of LED drive applications. Our highly integrated PWM and PFC controller solutions can reduce the total number of material lists in order to achieve smaller sizes of lamps, simplify product design, while improving the efficiency of the overall lighting.