DC/DC Controller Patent Continuation Issued to O2Micro


GEORGE TOWN, Grand Cayman, June 14, 2006 (PRIMEZONE) -- O2Micro(R) International Limited (Nasdaq:OIIM) (SEHK:0457), a leading supplier of innovative power management and security components and systems for the Computer, Consumer, Industrial and Communications markets, was issued 19 claims under United States patent number 7,031,174 for its Direct Current-to-Direct Current (DC/DC) Converter with improved transient response; a continuation of the invention issued January 2004 under United States patent number 6,678,178.

This patented architecture provides for a broad range of simple, power efficient, cost-effective DC/DC converter controller solutions resulting in benefits such as fewer parts, PCB space savings, and higher reliability. Product applications include notebooks and servers.

"This patented design is suitable for both single phase and active current balance multi-phase implementations. It responds well to both input voltage transients and output current transients," commented Dr. Alex Hartular, vice president, O2Micro.

About O2Micro

Founded in April 1995, O2Micro develops and markets innovative power management, and security components and systems for the Computer, Consumer, Industrial, and Communications markets. Products include Intelligent Lighting, Battery Management, Power Management, SmartCardBus(R) and Security products, such as VPN/Firewall system solutions.

O2Micro International maintains an extensive portfolio of intellectual property with 4,973 patent claims granted, and over 7,000 more pending. The company maintains offices worldwide. Additional company and product information can be found on the company website at www.o2micro.com.

O2Micro, the O2Micro logo, SmartCardBus, and combinations thereof are registered trademarks of O2Micro.

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.


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