O2Micro Issued Key Battery Power Patent

O2Micro Issued Key Battery Power Patent

SANTA CLARA, Calif. & GEORGE TOWN, Grand Cayman--(BUSINESS WIRE)--Sept. 17, 2001--O2Micro International Limited (Nasdaq:OIIM - news), a leading supplier of innovative power management ICs to mobile computer and communications manufacturers, has been granted 21 claims under United States patent number 6,285,161 for its Balanced Battery Cell Charging Circuit.


O2Micro's Balanced Battery Cell Charging IC monitors voltages on each individual lithium ion (LiIon) or lithium polymer (LiPolymer) cell in a 3- or 4-cell battery pack. By individually adjusting the current to each cell, this new integrated circuit


Enhances safety and reliability

Ensures no overcharging of battery cells

Increases battery operating time

Enables faster charging

This technology is ideal for notebook computers or any system that uses multiple-cell rechargeable batteries.


``This patented invention solves the drawbacks of prior techniques used to charge systems that use LiIon or LiPolymer rechargeable batteries,'' stated Jack Shyr, Vice President of O2Micro's Intelligent Power Group. ``This technology advances O2Micro in its goal to develop more efficient charging ICs for next-generation battery-operated systems.''


About O2Micro


Founded in March 1995, O2Micro designs, develops and markets innovative power management and security components for mobile communication, computer, Information appliance, and LCD products. Products include AudioDJ®, SmartCardBus® for secure online e-commerce, LCD Backlight Inverters and Battery Management ICs.


O2Micro maintains an extensive portfolio of intellectual property with 331 patent claims granted, and over 500 more pending. The company maintains offices worldwide. Additional company and product information can be found on the company Web site at www.o2micro.com.


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 development process, and errors in the products. You are also referred to the documents filed by O2Micro with the SEC from time to time, including but not limited to the Form F-1 in connection with the company's initial public offering in August 2000, which identify important risk factors that could cause actual results to differ from those contained in the forward-looking statements.






Grace Louh, 408/987-5920 x8051

Email: grace.louh@o2micro.com