Fairchild Semiconductor’s LED Drivers Enable Design Flexibility and Extend Battery Life in Mobile Handsets
June 02 2010 - 11:01AM
Business Wire
Fairchild Semiconductor (NYSE: FCS) brings designers of mobile
handsets, gaming devices, MP3 players and other small display
applications LED drivers that deliver 92 percent peak efficiency,
extending battery life. The FAN5701 and FAN5702 are 1x to1.5x
charge pump-based 180mA, 6-channel LED drivers that backlight TFT
LCD displays in mobile electronics. Their low transition voltage
from 1x to 1.5x mode allows them to operate in 1x mode for a longer
time period, achieving higher efficiency. Both LED driver products
can be configured to support clamshell form factor mobile handsets
that have both main and secondary displays.
The FAN5702 is a configurable, 180mA, 6-channel LED driver with
I2C interface and provides:
- Design flexibility, enabling it
to be used in different lighting applications beyond backlight LCD
displays such as Red-Green-Blue (RGB) indicator/fun lights.
- An I2C interface, allowing the
designer to control the LED outputs individually (2,1,1,1,1 format)
and group them together or separately depending upon the design
requirements.
- Greater brightness control by
having each LED output supporting 64 logarithmic-dimming steps and
eliminating distortion especially at lower brightness levels.
- An enable pin, providing the
baseband chipset direct control to turn it on or off.
- A PWM signal input to support
dynamic backlight control (DBC). DBC is a feature that
automatically adjusts the brightness of the LEDs depending upon the
image content, which, in turn, helps reduce power consumption.
- A DBC feature with an ambient
light sensor providing both dynamic backlight and ambient light
control, saving up to 50 percent in power consumption.
The FAN5701 is a cost-effective LED driver that uses two PWM
inputs to control the brightness of a grouping of four and two LED
outputs. It is ideal for applications where there is a requirement
to backlight two LCD displays or to drive a high brightness LED for
low power camera flash in mobile handsets.
The FAN5701 and FAN5702 are housed in compact 16-bump WL-CSP and
16-lead UMLP packages to accommodate the slimmer and smaller form
factor of today’s portable designs. In WL-CSP form factor the
FAN5701 and FAN5702 occupy 2.56mm2, which is one of the smallest
lighting solutions available in the market today and are
instrumental in conserving PCB space. These LED drivers are part of
Fairchild’s comprehensive offering of solutions for the mobile
space. These solutions are instrumental in conserving power, space
and supporting the rich functionality in mobile applications.
Price (each 1,000pcs):
FAN5701 = US$0.72 FAN5702 = US$0.95
Availability: FAN5701 and FAN5702 in WL-CSP form factor
is in production now while the UMLP package version will be
available in June 2010.
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.
Note to Editor: For a datasheet in PDF format, please go
to:
http://www.fairchildsemi.com/ds/FA/FAN5701.pdf
http://www.fairchildsemi.com/ds/FA/FAN5702.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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