SANTA CLARA, Calif.,
June 7, 2011 /PRNewswire/ -- Advanced
Analogic Technologies, Inc. (AnalogicTech™) (Nasdaq: AATI), an
analog semiconductor company focused on powering innovative
solutions in consumer, industrial, and communications markets,
today introduced the AAT1451, a high-efficiency white LED driver
for liquid crystal display (LCD) backlighting applications in
portable electronic devices such as the fast-growing tablet and the
established computer markets.
(Logo:
http://photos.prnewswire.com/prnh/20050829/SFTU089LOGO)
"Power management considerations for system designers vary
depending on the size of the display and the use-case scenarios
they are targeting," said Ray Chan,
Technical Marketing Manager of AnalogicTech. "With the AAT1451 we
bring to market the most comprehensive feature set available in an
LED driver that makes it possible for batteries to last longer, a
critical differentiator in the rapidly growing tablet market. As a
company, we now have LED drivers to support the entire range of LCD
screen sizes from cell phones to large form factor televisions, all
of which offer a wide variety of features and options to enhance
the end-user experience."
The new AnalogicTech AAT1451 LED driver offers many innovative
features that enable manufacturers to offer products with
comprehensive feature sets that address consumer demands. For
example, the AAT1451:
- Drives up to four light emitting diode (LED) strings at up to
93 percent efficiency, and extends this efficiency to low LED
brightness levels by automatic phase shifting, which further
increases battery life.
- Uses a 32 kHz pulse width modulation (PWM) operating frequency
to ensure silent operation.
- Has a high switching frequency (600kHz - 1MHz) to allow
original equipment manufacturers (OEMs) to select small passive
components resulting in lighter and smaller end products.
- Offers a wide selection of DC input voltages so that devices
can be powered from sources including cigarette lighter adapters
and multi-cell Li-Ion batteries.
- Incorporates comprehensive safety features to alert system
controller and take corrective action by disabling shorted and open
LED strings to prevent thermal fault conditions.
The AAT1451's proprietary PWM dimming reduces peak currents by
as much as 75 percent and the 256 LED brightness levels support the
Android operating system platform and Content Adaptive Brightness
Control (CABC) to further increase battery life.
To ensure accurate backlight color temperature and uniform
brightness across the entire display, the AAT1451 has four
precision current sinks that are programmable up to 30mA per string
at +/- 2 percent accuracy with +/- 1.5 percent matching between
strings to drive up to 48 white LEDs at 120mA total output
current.
The AAT1451 is priced at US$0.82
@10K units. For other quantities, contact AnalogicTech or its
distributors. The AAT1451 is currently shipping.
Key Features:
- Input Voltage Range: 2.7 to 26V
- Integrated 50V Boost Converter
- 32 kHz PWM frequency
- Fully adjustable switching frequency of 600kHz to 1MHz.
- Maximum I(out): 120mA
- Integrated Fault Protection for:
- Over-voltage
- Over-temperature
- Soft-Start
- Low Profile TDFN34-16 Package
- -40 C to + 85 degrees C Temperature Range
About Advanced Analogic Technologies, Inc.:
Advanced Analogic Technologies, Inc. (AnalogicTech™) (NASDAQ:
AATI) develops advanced semiconductor system solutions that play a
key role in the continuing evolution of feature-rich, energy
efficient electronic devices. The company focuses on addressing the
application-specific power management needs of consumer devices
such as mobile handsets, digital cameras, and netbooks/notebooks,
as well as devices in a broad range of industrial, medical and
telecom applications. AnalogicTech also licenses device, process,
package, and application-related technologies. Headquartered in
Silicon Valley, AnalogicTech has design centers in Santa Clara and Shanghai, and Asia-based operations and logistics. For more
information, please visit www.analogictech.com (AnalogicTech -
G).
The AnalogicTech logo is a registered trademark of Advanced
Analogic Technologies, Inc. AnalogicTech is a trademark of Advanced
Analogic Technologies, Inc. All other brand and product names
appearing in this document are registered trademarks or trademarks
of their respective holders.
SOURCE Advanced Analogic Technologies, Inc.