AnalogicTech(TM) Launches Family of Direct and Edge LED Backlighting Drivers; Unveils Strategic Roadmap for LED Backlit LCD Tele
November 18 2009 - 8:00AM
PR Newswire (US)
SANTA CLARA, Calif., Nov. 18 /PRNewswire-FirstCall/ -- As part of
its market expansion and diversification strategy, Advanced
Analogic Technologies, Inc. (AnalogicTech) (NASDAQ:AATI), an analog
semiconductor company focused on powering innovative solutions in
consumer, industrial, and communications markets, today made its
official move into the LED backlit LCD television market with the
first chip set families in a series of innovative power management
semiconductor systems designed to significantly enhance energy
efficiency and user-experience for LED backlit LCD televisions.
(Logo: http://www.newscom.com/cgi-bin/prnh/20050829/SFTU089LOGO)
"The launch of these new products for the LED backlit television
market represents our continued drive to offer innovative solutions
that conserve power and deliver a better end-user experience,"
stated Richard Williams, CEO of AnalogicTech. "We have a wealth of
experience seamlessly integrating our ModularBCD(TM)-based LED
drivers into tier one handset manufacturers' high-end handset
designs. This technology allows us to deliver the same
high-performance and energy efficiency to innovative solutions in
the LED backlit LCD television space." The intelligent control of
LED current sinks in direct/matrix backlight applications can
provide precise brightness of individual segments based on image
content and can give the consumer truer blacks and improved
contrast for a significantly better, more natural viewing
experience. Dynamic LED backlighting also makes it possible to meet
the increasingly stringent energy consumption specifications for
large panel TVs such as the state of California is considering.
"The unique design and process advantages of our proprietary
ModularBCD(TM) process allow the effective integration of low
voltage digital circuitry with high-voltage analog circuitry. This
combination enables the dynamic management of high current, high
voltage LED current sinks and results in significant power
savings," added Williams. As its initial entry point into the LED
television market, AnalogicTech announced 7 new products: -- LED
Driver Chipset with Integrated Boost converter for Direct/Matrix
Backlighting -- AAT2400 (8ch Master) & AAT2401 Unlatched (8ch
Slave) Chipset -- AAT2402M (8ch Master) & AAT2402S Latched (8ch
Slave) Chipset -- Dedicated LED Driver for Direct/Matrix
Backlighting -- AAT2403 (16ch) Latched LED Driver -- Dedicated LED
Driver for Edge Backlighting -- AAT2405 PWM with phase shift (6ch)
LED Driver -- AHK2417E Latched (8ch) LED Driver -- AHK2418E Latched
(16ch) LED Driver -- DC/DC Boost Controller -- AAT2404 High Voltage
Boost Controller These devices utilize AnalogicTech's patent
pending Multiple Chip Voltage Feedback technique that ensures the
proper LED supply voltage is simultaneously regulated across up to
16 chipsets (or 256 channels) allowing precise control of up to
2560 LEDs for direct or dynamic backlighting solutions or up to 16
channels for Edge. AnalogicTech's Direct/Matrix Backlighting
Solutions The AAT2400/01 and AAT2402M/S chipsets produce a
16-channel high current LED driver capable of driving up to 10 LEDs
in a single string. Each master and slave contains 8 high-voltage
current sinks capable of sinking up to 100mA/channel. Using a SPI
interface, up to 16 chipsets (or 256 channels) can be sequentially
addressed and controlled. Each channel features 8-bit DOT
correction, 12-bit grayscale, 12-bit delay time and on/off control.
Protection against over-voltage, short or open circuit LEDs,
over-temperature and over-current is included, with the information
reported via the SPI bus and a fault flag. To provide the power for
the LED strings, the AAT2400 and AAT2402M includes a boost
converter with an integrated lateral TrenchDMOS output device,
which uses the current sink information from each channel to ensure
that the output voltage can correctly bias all LED strings
regardless of LED forward voltage. The AAT2403 is a dedicated
16-channel high current LED driver capable of driving LEDs in a
single string powered from an external Step-up or Step-down
converter. Each current sink is capable of sinking up to
100mA/channel. Utilizing a SPI bus interface, up to 16 chipsets (or
256 channels) can be sequentially addressed and controlled. Each
channel features 8-bit DOT correction, 12-bit grayscale control,
12-bit delay time and on/off control. As with the AAT2402 Master
and Slave, protection against over-voltage, short or open circuit
LEDs, over-temperature and over-current is included, with the
information reported via the SPI bus and a fault flag.
AnalogicTech's Edge Backlighting Solutions The AAT2405 (6-channel),
edge lighting driver can be paired with the AAT2404 high voltage
boost controller to deliver a configurable solution for Edge LCD
Backlighting. With simple adjustable phase delay, the AAT2405 can
be configured as a 2- ch, 3- ch, 4-ch or 6-ch driver, dependant on
the number of LED strings per light bar. Utilizing internal current
sensing, the AAT2405 eliminates high tolerance, high cost external
sensing resistors. Each output can regulate up to 150mA/channels
with +/-2.5% accuracy and matching. These devices can be cascaded
for multiple LED strings, with communication between the ICs
maintaining the correct PWM and Phase information. Also released
for edge applications are the AHK2417E (8-channnel) and AHK2418E
(16-channel).This solution is for systems with up to 100mA/channel
LED output current with +/-2.5% accuracy and matching. The chipset
features integrated fault protection for shorted & open circuit
LEDs, over-current, over-voltage and over-temperature protection
with fault reporting via the SPI bus. DC-DC Boost Controllers The
AAT2404 is a DC-DC boost controller IC which can operate from a 12V
or 24V input supply and boosts the voltage dependent upon the
number of LEDs in the string. Integrating a high speed, low
impedance gate driver IC, the AAT2404 uses externally connected
MOSFETs to provide up to 3.2A of output current. The AAT2404
directly connects to the current sink feedback pin of the LED
backlight drivers to provide the correct string voltage. Powering
Innovative Solutions in the TV Market In addition to a family of
new LED backlight driver products, AnalogicTech outlined plans to
deliver a total power management solution for TVs including, for
example, enhancements to AnalogicTech's existing Class D Audio
power amplifier products. Product development is underway and
products will be rolled out over the next several months. "Adoption
of these new technologies will be driven by three key factors:
Environmental mandates to eliminate the mercury CCFLs used in
today's backlighting, the continued price reduction of white LEDs
bringing the cost of LED backlighting to parity with CCFLs, and the
consumers' desire for a better viewing experience," stated Phil
Dewsbury, Product Line Director, Display and Lighting Products.
"With the products announced today and the pipeline of
enhancements, we have the best system solution for the TV market to
deliver on the promise of power conservation and enhanced
user-experience." Availability The AAT2400/01 and AAT2402M/S
direct/matrix driver chipsets, the AAT2403 dedicated direct/matrix
driver and AAT2405 and AHK2417/18 edge drivers as well as the
AAT2404 DC/DC boost controller are all available for design-in.
More information: http://www.analogictech.com/ 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
http://www.analogictech.com/ (AnalogicTech - G). ModularBCD(TM)
Process The AAT24xx and AHK24xxfamilies are manufactured in
AnalogicTech's ModularBCD process technology. Unlike linear-IC
legacy fabs or generic digital CMOS foundries, the ModularBCD
process represents the first of a new generation of analog, power
and mixed-signal IC technologies especially created for high-tech
wafer fabrication and optimized for manufacture in ex-DRAM fabs.
This process makes single-chip, mixed-signal and system ICs both
more technically and economically feasible by monolithically
integrating fully-isolated CMOS at 3V, 5V, and 12V with high-speed
complementary bipolar transistors and robust 30V and up DMOS power
devices without resorting to highly complex and expensive
techniques such as epitaxy or high-temperature diffusion. As a
result, devices manufactured in ModularBCD offer higher efficiency,
smaller size, and higher levels of integration than devices
fabricated in traditional processes, and can better manage power
and extend battery life in a wide range of mobile consumer
electronics products such as cell phones, portable media players,
tablet and laptop computers and digital cameras. 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. http://www.newscom.com/cgi-bin/prnh/20050829/SFTU089LOGO
http://photoarchive.ap.org/ DATASOURCE: Advanced Analogic
Technologies, Inc. CONTACT: Headquarters, Karolien Cools-Wittry of
AnalogicTech, +1-408-737-4600, ; Agency, Dave Richardson of Impress
Public Relations, +1-415-994-1423, , for Advanced Analogic
Technologies, Inc. Web Site: http://www.analogictech.com/
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