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O2Micro International Limited, a fabless semiconductor company, designs, develops, and markets semiconductor components for power management and security applications. It offers mixed signal integrated circuits (ICs) that provide battery management for mobile applications, such as notebook PCs, power tools, electric bikes, electric vehicles, hybrid electric vehicles, and uninterruptible power supply systems, as well as supplies battery charge controllers. The company’s products also comprise security-based ICs, which include SmartCardBus, E-Guardian, MemoryCardBus, and Pre-Boot Security that protect against undesired product use and enable PKI-based secure e-commerce supported by Power Switch ICs. In addition, it provides intelligent lighting backlight CCFL, EEFL, FFL, and LED controllers for various sizes of LCD display applications, comprising desktop monitors, televisions, notebooks, global positioning system, and other mobile applications. Additionally, the company develops intelligent security software solutions, and silicon products and other engineered multi-layered structures for integrated circuits, as well as provides semiconductor assembly and testing services. Further, O2Micro International licenses its intellectual property to third parties. It serves the electronics manufacturers of communications, computer, consumer, industrial, and automotive products. The company sells its products through direct sales offices; sales representatives in China, Hong Kong, Singapore, Taiwan, and the United States; and distributors in Japan and China. O2Micro International was founded in 1995 and is headquartered in George Town, the Cayman Islands.

GEORGE TOWN, Grand Cayman, Sept. 23, 2009 (GLOBE NEWSWIRE) -- O2Micro(R) International Limited (Nasdaq:OIIM - News), was issued 17 claims under United States patent number 7,583,067 for its Variable Power Output Regulator; a continuation of the invention issued August 2006 under United States patent number 7,095,217.

This architecture not only significantly increases safe operation, but also, raises the maximum output power. Applications include cellular phones, portable computers, PDAs, and more.



"This power control circuitry offers efficient and cost effective solutions for safe operation of DC Power Sources within rated limits for output current and power," said Dr. Alex Hartular, vice president, O2Micro.



About O2Micro



Founded in April 1995, O2Micro develops and markets innovative power management, and security components for the Computer, Consumer, Industrial, and Communications markets. Products include Intelligent Lighting, Battery Management, Power Management, and SmartCardBus(R) products.



O2Micro International maintains an extensive portfolio of intellectual property with 12,700 patent claims granted, and over 15,000 more pending. The company maintains offices worldwide. Additional company and product information can be found on the company website at O2Micro - Welcome.



The O2Micro International Limited logo is available at GlobeNewswire, Inc.



O2Micro, the O2Micro logo, SmartCardBus, and combinations thereof are registered trademarks of O2Micro. All other trademarks are the property of their respective owners.



Statements made in this release that are not historical, including statements regarding O2Micro's or management's intentions, hopes, beliefs, expectations, representations, projections, plans or predictions of the future, are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements involve risks and uncertainties that may cause actual results to differ materially from those set forth in these statements. Factors that could cause actual results to differ materially include risks and uncertainties such as reduced demand for products of electronic equipment manufacturers which include O2Micro's products due to adverse economic conditions in general or specifically affecting O2Micro's markets, technical difficulties and delays in the developments process, and errors in the products. You are also referred to the Form F-1 in connection with the company's initial public offering in August 2000, Form F-3 in connection with the company's public offering in November 2001, and the annual reports on Form 20-F, which identify important risk factors that could cause actual results to differ from those contained in the forward-looking statements. The company assumes no obligation to update or revise any forward-looking information, whether as a result of new information, future events or otherwise.

Contact:
O2Micro International LimitedGary E. Abbott, Director of Investor Relations408.987.5920, x8888gary.abbott@o2micro.com