Press Release Details

SUNNYVALE, Calif., July 29, 2010 (GLOBE NEWSWIRE) -- Alpha and Omega Semiconductor Limited (AOS) (Nasdaq:AOSL) expands its synchronous EZBuck^TM portfolio with four new next generation DC-DC step-down regulators. The AOZ103x series is designed to efficiently convert input voltages in the range of 4.5V to 18V down to lower voltage levels required to power latest generation microcontrollers, ASICs, DSPs, memory, and other IC chipsets. The new products feature improved efficiency at light loads and expanded output current ratings, which make them ideal for applications such as the latest generation of LCD TVs, BluRay players, set-top boxes, servers and high-end desktop PCs.

A photo accompanying this release is available at http://www.globenewswire.com/newsroom/prs/?pkgid=7795

The AOZ1031, AOZ1034, AOZ1036/AOZ1037 are 600kHz PWM current mode regulators rated at 3A, 4A, and 5A, respectively.  For maximum efficiency performance, the new AOZ103x family automatically adjusts between two modes of operation: a synchronous mode for heavy load current conditions, and a non-synchronous mode to save power in light load conditions. The light load mode provides up to 20% efficiency improvement at 100mA of output current. The products are offered in small size SO-8, exposed pad SO-8 and DFN5x4 package options.

"As today's consumer electronics products build in more features that require more processing power, designers are requiring DC-DC converters that offer more output current in the same or smaller solution size than with previous generations. At the same time the drive for 'Greener' products is requiring solutions with higher efficiency performance across a wider load range. The new AOZ103x series meets these design challenges by providing higher output current and higher efficiency in a compact area," said Alan Moore, Manager of Power IC Marketing at AOS.

Pricing and Availability

The AOZ103x family is available immediately. The table below shows brief specifications and pricing.

About AOS

Alpha and Omega Semiconductor Limited, or AOS, is a designer, developer and global supplier of a broad range of power semiconductors, including a wide portfolio of Power MOSFET and Power IC products. AOS seeks to differentiate itself by integrating its expertise in device physics, process technology, design and advanced packaging to optimize product performance and cost, and its product portfolio is designed to meet the ever increasing power efficiency requirements in high volume applications, including portable computers, flat panel TVs, battery packs, portable media players and power supplies. For more information, please visit www.aosmd.com.

Forward Looking Statements

This press release contains forward-looking statements that are based on current expectations, estimates, forecasts and projections of future performance based on management's judgment, beliefs, current trends and anticipated product performance. These forward-looking statements include, without limitation, references to the efficiency and capability of new products. Forward looking statements involve risks and uncertainties that may cause actual results to differ materially from those contained in the forward-looking statements. These factors include, but are not limited to, the actual product performance in volume production, the quality and reliability of the product, our ability to achieve design wins, the general business and economic conditions, the state of semiconductor industry, and other risks as described in the Company's SEC filings, including its registration statement on Form F-1 filed on March 31, 2010, as amended, and other filings with the SEC. Although the Company believes that the expectations reflected in the forward looking statements are reasonable, it cannot guarantee future results, level of activity, performance, or achievements. You should not place undue reliance on these forward-looking statements. All information provided in this press release is as of today's date, unless otherwise stated, and AOS undertakes no duty to update such information, except as required under applicable law.

The photo is also available via AP PhotoExpress.

CONTACT:  Alpha and Omega Semiconductor Limited
          Media Contact:
          Clara Chan
          408.789.3233
          cchan@aosmd.com

(C) Copyright 2010 GlobeNewswire, Inc. All rights reserved.