A huge potential market of untapped cell phone users in regions like India, China, Russia, South America and Africa want cell phone service, but can only afford very basic, entry-level, reduced-feature-set phones. With AnalogicTech’s AAT3193, designers building cell phones for these new markets can provide basic illumination for low-cost TFT-LCD panels in an extremely small footprint while requiring just two external components; a 1µF capacitor for the charge pump and a single external resistor to set the full-scale LED current.
The AAT3193 is the first in a family of two and three channel charge pump-based WLED drivers. Targeted at a new generation of highly affordable handsets, these new devices offer excellent performance in an extremely space-efficient 2x2mm package.
Despite its no frills approach, the AAT3193 does not sacrifice performance. It drives up to three LEDs at up to 30mA each to support the illumination of lower cost, monochrome and highly opaque TFT-LCD panels. The next member in the product family, the AAT3192, will drive two LEDs. Both devices offer part-to-part current accuracy better than 10 percent and channel-to-channel current matching better than 3 percent. These charge pump-based devices automatically switch between 1x and 2x mode to maximise efficiency and to minimise the number of external components required.
Using the AAT3193, each LED can be programmed either using traditional linear PWM techniques or via AnalogicTech’s proprietary, patented single-wire S2Cwire interface. Designers using the S2Cwire interface can program each WLED up to 30mA each in 16, 8 or 4 steps. The device also features integrated thermal protection and automatic soft start.
The AAT3193 is qualified across the -40 to +85 degrees C temperature range and comes in a Pb-free, 10-lead, 2x2-mm SC70JW package.
For further information and reader enquiries:
Phil Dewsbury, Advanced Analogic Technologies, Inc., Europe, Liberty House, The Enterprise Centre, Newgreenham Park, Newbury, RG19 6HW
Tel: +44 (0) 1189 657763 E-mail: firstname.lastname@example.org
Fax: +44 (0) 1189 657764 Web: http://www.analogictech.com/
Advanced Analogic Technologies Incorporated (AnalogicTech) is a supplier of power management semiconductors for mobile consumer electronic devices, such as wireless handsets, notebook and tablet computers, smartphones, digital cameras, and digital audio players. The company focuses its design and marketing efforts on the application-specific power management needs of consumer, communications, and computing applications in these rapidly evolving devices. AnalogicTech is headquartered in Sunnyvale, California, with offices in Beijing, Hong Kong, Japan, Shanghai, Shenzhen, South Korea, Sweden, UK, France, and Taiwan, as well as a worldwide network of sales representatives and distributors. For more information, please visit the AnalogicTech website: www.analogictech.com.
Note: The above text is the public part of the press release obtained from the manufacturer (with minor modifications). EETimes Europe cannot be held responsible for the claims and statements made by the manufacturer. The text is intended as a supplement to the new product presentations in EETimes Europe magazine.