Fairchild Semiconductor’s Smart LED Lamp Driver IC Solves Small-Space Dimming Challenges for Designers
October 20 2011 - 11:00AM
Business Wire
As LED lighting continues to grow in popularity, especially in
residential lighting applications, designers are looking for
efficient dimming solutions – when compared to TRIAC methods – that
also fit within existing sockets. Additionally, these solutions
need to work reliably in a small space while providing high
efficiency.
To help designers meet this challenge, Fairchild Semiconductor
(NYSE: FCS), a leading global supplier of high performance power
and mobile products, developed the FL7701 Smart Non-isolated Buck
LED Driver with power factor correction (PFC). The device uses a
digital technique that allows it to automatically detect the AC
input voltage condition, allowing it to create a special internal
reference signal that results in high power factor correction. The
FL7701 will also work from a DC input voltage condition,
automatically sensing AC versus DC input voltage conditions. The
traditional technique of using a transformer in an MR application
incurs additional losses with the transformer conversion; this
traditional inefficient method can now be replaced using the FL7701
connected directly to a DC or AC off-line input.
The FL7701 combines high functional density in a small form
factor that provides designers up to 20 percent lower bill of
material (BOM) costs and up to 60 percent board space savings. This
combination creates a solution suitable for the space-constrained
PCB sizes found in LED lighting applications and supports analog
dimming.
The high degree of integration designed into the FL7701 provides
the high reliability required to increase the luminary lifespan to
more than five years, compared to the three years achievable by
current solutions. Reliability is also improved since no
electrolytic capacitors for the input, output, or the FL7701 VDD
supply are required.
Digital power factor (PF) realization (>0.9) and lower total
harmonic distortion (THD), along with the 90% electrical efficiency
results in increased energy savings for the end system. Combined,
these features allow the FL7701 to provide energy savings that meet
the most stringent worldwide regulations, such as Energy Star®.
Fairchild’s IC design technology results in high power
efficiency (>90 percent) and provides high light quality
required for residential applications. Available in an SOP-8
package, the FL7701 is ideal for interior decorating/ornamental
lights; LED light bulbs or down lights in PAR, Reflector, MR or
classic styles E26/E27 or Bi-Pin base, as well as LED lamps for low
power lighting fixtures.
Fairchild offers a total solution portfolio for low- (50W) LED
driver applications. Our highly integrated PWM and PFC controller
solutions reduce component BOM counts to enable smaller lamp sizes
and eliminate design complexities, while improving overall lighting
efficiency. Fairchild’s extensive product portfolio ranges from
discrete devices to integrated solutions that contain PFC
controllers, high voltage gate drivers and MOSFETs. With commitment
to energy savings and meeting the most stringent regulations,
Fairchild has developed innovative products that maximize
performance while reducing board space, design complexity and
system costs. In addition, Fairchild’s Global Power ResourceSM
Center comprised of online tools, FAEs and regional centers staffed
by power engineers, is the industry standard for customer design
support.
Fairchild Semiconductor: Solutions for Your Success™
Price: US $1.27 in 1,000 quantity pieces
Availability: Samples available upon request.
Delivery: 8-12 weeks ARO
Contact Information:
To contact Fairchild Semiconductor about this product, please go
to: http://www.fairchildsemi.com/cf/sales_contacts/.
For information on other products, design tools and sales
contacts, please visit: http://www.fairchildsemi.com.
Note to Editor: For a datasheet in PDF format, please go
to:
http://www.fairchildsemi.com/ds/FL/FL7701.pdf
About Fairchild Semiconductor:
Fairchild Semiconductor (NYSE: FCS) – global presence, local
support, smart ideas. Fairchild delivers energy-efficient,
easy-to-use and value-added semiconductor solutions for power and
mobile designs. We help our customers differentiate their products
and solve difficult technical challenges with our expertise in
power and signal path products. Please contact us on the web at
www.fairchildsemi.com.
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View product and company videos, listen to podcasts and comment
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