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AnalogicTech's New Inductive Boost DC/DC Converter With Single-Wire, Digital Brightness Control Powers Series-Connected White LEDs

25 July 2006

SUNNYVALE, Calif., July 24 /PRNewswire-FirstCall/ Advanced Analogic Technologies Incorporated (AnalogicTech) (Nasdaq: AATI), a developer of power management semiconductors for mobile consumer electronic devices, today announced the AAT1231, a high frequency, high efficiency inductive boost DC/DC converter for controlling white LEDs in portable systems operating from single-cell lithium-ion/polymer batteries. Delivering 50mA up to 24V, this new device is capable of driving up to six white LEDs in series or up to 12 white LEDs in a parallel/series configuration using AnalogicTech's digital Simple Serial Control(TM) (S(2)Cwire(TM)) single-wire interface.

(Logo: http://www.newscom.com/cgi-bin/prnh/20050829/SFTU089LOGO )

"The former de facto standard PWM techniques to control series-connected LEDs produce variations in current and therefore LED brightness. In addition, PWM control methods consume microcontroller processing resources, require GPIO interfaces, and demand a large number of additional components," said Adolfo Garcia, Product Line Director for AnalogicTech. "With the AAT1231, designers can use a single wire to digitally control the LEDs, which provides flicker-free light output, reduces MCU clock cycles, saves GPIO resources, and builds a complete solution with fewer components."document.write('');

Consistent Brightness

LED output current on the AAT1231 is controlled using AnalogicTech's S(2)Cwire interface in 16 linear steps. By changing the feedback voltage with the SEL pin, designers can extend the output voltage another 16 levels. This allows designers to 'set and forget' the output across a total of 26 steps (after overlap) from 7.5% to 100%. Digital control improves display readability by providing constant flicker-free LED output.

The AAT1231's high 2MHz switching frequency provides fast response to load transients and permits the use of small external components including a 2.2uH inductor. The AAT1231 delivers overall efficiency up to 82%.

True Load Disconnect

The AAT1231 also adds a true load disconnect feature which completely isolates the load from the power source. By reducing leakage current to less than 1uA, this function extends battery life and system standby time.

The AAT1231 also offers a wide variety of standard protection features, including integrated soft-start, current limit, over-temperature, and over-voltage protection.

Price and Availability

Specified over the -40 degrees C to +85 degrees C temperature range, the AAT1231 is immediately available in a Pb-free, 12-pin TSOPJW package. The device sells for $0.94 each in 1000-piece quantities.

About AnalogicTech

Advanced Analogic Technologies Incorporated (AnalogicTech) is a supplier of Total Power Management(TM) semiconductor solutions for mobile consumer electronic devices, such as wireless handsets, notebook and tablet computers, smartphones, digital cameras, wireless LAN, and personal media 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 also develops and licenses device, process, package, and application-related technology. AnalogicTech is headquartered in Sunnyvale, California, with offices in South Korea, Taiwan, Hong Kong, Macau, Shanghai, Shenzhen, Beijing, Japan, Sweden, UK, and France, as well as a worldwide network of sales representatives and distributors. The company is listed on the NASDAQ exchange under the ticker symbol AATI. For more information, please visit the AnalogicTech website: www.analogictech.com. (AnalogicTech - G)

"Safe Harbor" Statement Under the Private Securities Litigation Reform Act of 1995

Statements contained in this release that are not historical facts are forward-looking statements, as that term is defined in the Private Securities Litigation Reform Act of 1995. Forward-looking statements, including financial projections and forecasts, involve risks and uncertainties that could cause AnalogicTech's actual results to differ materially from our current expectations. Factors that could cause AnalogicTech's results to differ materially from those set forth in these forward-looking statements include customers' cancellation or modification of their orders; our failure to accurately forecast demand for our products; the loss of, or a significant reduction in orders from, any of our significant customers; fluctuations in our operating results; our inability to develop and sell new products; defects in or failures of our products; the expense and uncertainty involved in our customer design-win efforts; the financial viability of the distributors of our products; consumer demand for cellular phones and other mobile consumer electronic devices; worldwide economic and political conditions, particularly in Asia; fluctuations in our costs to manufacture our products; our reliance on third parties to manufacture, test, assemble and ship our products; our ability to retain and attract key personnel; our ability to compete with our competitors; and our ability to protect our intellectual property rights and not infringe the intellectual property rights of others. Other factors that may cause our actual results to differ from those set forth in the forward- looking statements contained in this press release and that may affect our prospects in general are described in our filings with the Securities and Exchange Commission, including our Registration Statement on Form S-1 related to our initial public offering and our Annual Report on Form 10-K for the year ended December 31, 2005. AnalogicTech undertakes no obligation to update or revise forward-looking statements to reflect subsequent events or changed assumptions or circumstances.

NOTE: AnalogicTech and the AnalogicTech logo are trademarks of Advanced Analogic Technologies Incorporated. All other brand and product names appearing in this document are registered trademarks or trademarks of their respective holders.

SOURCE Advanced Analogic Technologies Incorporated (AnalogicTech

Source: dmnnewswire