SANTA CLARA, Calif.,
April 12, 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 AAT2870 lighting management unit
(LMU). Highly configurable, the device is capable of driving eight
independently programmed LEDs for backlighting and four low-dropout
(LDO) regulators for powering camera modules. The new LMU supports
the drive for cost efficiency in the smartphone market with
built-in support for low-cost photo diodes as ambient light
sensors. Automation of all backlight functions, including fading
and ambient light brightness adjustments greatly extends battery
runtime.
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"The increased adoption of cameras in smartphones and other
small, portable devices has placed new demands on LMUs for
next-generation products," said Raymond
Chan, Technical Marketing Manager of AnalogicTech.
"Implementing effective power management is critical for maximizing
battery runtimes and increasing user satisfaction. The AAT2870
builds on our LMU portfolio by adding support for photo diodes and
truly autonomous backlight control while surpassing the efficiency,
small footprint and ease of design-in of our existing LMU
products."
Offering complete ambient light sensor management, the AAT2870
provides automatic sensor bias, calibration and control of analog
ambient light sensors and low-cost photo diodes. The implementation
of these functions provides seamless ambient-light-controlled
backlight brightness, reduces calibration effort in production and
processor overhead during operation.
The AAT2870's tri-mode negative charge pump is capable of
independent current control of eight white LEDs up to 27.9 mA and
offers direct LED connection to the battery, further enhancing
efficiency and making it comparable to inductor-based conversion.
Independent load switches selectively connect LEDs with high
forward voltage (VF) to the charge pump for better management of VF
variations. The device also drives four I(2)C programmable LDO
outputs at up to 300 mA that are designed to provide power to
camera modules and other accessories.
The AAT2870 is packaged in a 3.1 mm x 2.6 mm - 30 pin WLCSP
providing a complete solution in a 9 mm x 10 mm footprint and at
0.7 mm thin to enable sleek form factor handsets. The AAT2870 is
priced at US$1.24 @10K units. For
more information, contact AnalogicTech or its distributors. The
AAT2870 is currently shipping.
Key Features:
- Eight independently programmable backlight channels with
automatic fading
- Ambient light sensing backlight control with automatic fading
between 128 dimming levels
- Four LDO regulators programmable from 1.2V to 3.3V
- Fully content adaptive brightness control (CABC) compliant
pulse-width modulation (PWM) dimming
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.