O2Micro's Multi-cell Battery Monitoring Invention Receives Patent

O2Micro's Multi-cell Battery Monitoring Invention Receives Patent

GEORGE TOWN, Grand Cayman, Feb. 6, 2013 (GLOBE NEWSWIRE) -- O[2]Micro^®
International Limited (Nasdaq:OIIM), a global leader in the design,
development and marketing of high-performance integrated circuits and
solutions, today announced that it was issued 20 claims under United States
patent number 8,253,383 for its Multi-cell Battery Pack Monitoring systems and
methods.

This invention provides a current-mode voltage detection circuit and
methodology to protect a multi-cell, rechargeable battery pack from
over-voltage or under-voltage fault conditions.

Bill Densham, strategic marketing director, O[2]Micro, remarked "This patented
invention protects battery packs using a low power topology to extend battery
life for PDAs, notebook computers, power tools, electric vehicles (EVs) and
hybrid EVs (HEVs)."

About O[2]Micro

Founded in April 1995, O[2]Micro develops and markets innovative power
management components for the Computer, Consumer, Industrial, Automotive and
Communications markets. Products include LED General Lighting, Backlighting,
Battery Management and Power Management.

O[2]Micro International maintains an extensive portfolio of intellectual
property with 22,390 patent claims granted, and over 24,000 more pending. The
company maintains offices worldwide. Additional company and product
information can be found on the company website at www.o2micro.com.

The O2Micro International Limited logo is available at
http://www.globenewswire.com/newsroom/prs/?pkgid=6567

O[2]Micro, the O[2]Micro logo, and combinations thereof are registered
trademarks of O[2]Micro. All other trademarks or registered trademarks are the
property of their respective owners.

Statements made in this release that are not historical, including statements
regarding O[2]Micro'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 O[2]Micro's
products due to adverse economic conditions in general or specifically
affecting O[2]Micro'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: Scott L. Anderson
         Director of Investor Relations, O2Micro
         Phone: 408.987.5920, x8888
         Email: scott.anderson@o2micro.com

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