LED Driver equalizes brightness of LCDs in portable devices.March 29, 2010 -
Model FAN5341 offers 32 linear dimming steps and drives 3-5 white LEDs in series, with same current for each, at 83% efficiency. Boost LED driver operates at 1.2 MHz switching frequency and includes Schottky diode to minimize size of external passive components and board space. Its single-wire interface lets designers control brightness levels of LEDs by transmitting digital pulses from MCU to driver. Unit is contained in 2 x 2 mm UMLP package.
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
Original Press release
Fairchild Semiconductor Corp.
82 Running Hill Rd.
South Portland, ME, 04106
USA
Fairchild Semiconductor Addresses Customers' Need for a Compact Backlighting Solution in Portable Designs
SAN JOSE, Calif. - Fairchild Semiconductor (NYSE: FCS), continues to meet customers' needs for a compact, flexible solution that saves power while enabling more features in today's battery-operated, portable electronics. The FAN5341 is a highly efficient LED driver solution that improves brightness and resolution in portable designs, while offering 32 linear dimming steps and driving up to five white LEDs in series. By driving the LEDs in series this device ensures that all the LEDs used in applications such as mobile handsets, digital still cameras, GPS devices, MP3 players and other applications using small LCD displays have equal brightness.
This boost LED driver operates at 1.2MHz switching frequency, and integrates a Schottky diode to minimize the size of the external passive components and overall board space. With the FAN5341's simple single-wire interface, a designer can easily control the brightness levels of the LEDs by transmitting digital pulses from the microcontroller to the FAN5341. And since this lighting solution drives three to five LEDs in a series, the same current flows through each LED to ensure equal brightness. This LED driver also addresses space and power considerations in portable designs since it offers up to 83 percent efficiency, minimizing power consumption. The FAN5341 is assembled in a compact, low profile 2mm x 2mm UMLP package.
The FAN5341 is the newest addition to Fairchild's portfolio of lighting solutions for portable applications. Fairchild continues to drive innovation in the lighting area by developing market-driven products that lower the overall solution cost, while providing excellent performance.
Price (each 1,000pcs): $0.72
Availability: Samples available now
Delivery: 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.
For a datasheet in PDF format, please go to: http://www.fairchildsemi.com/ds/FA/FAN5341.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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Fairchild Semiconductor:
Louise Merriman
Corporate Marketing
1-(800) 341-0392 X 8761
Email: louise.merriman@fairchildsemi.com
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