O2Micro Introduces OZ8022VM LED Driver Controller for Single-SKU Universal, Global LED Bulbs

Wed Mar 6, 2013 8:30am EST

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GEORGE TOWN, Grand Cayman, March 6, 2013 (GLOBE NEWSWIRE) -- O2Micro® International Limited
(Nasdaq:OIIM), a global leader in the design, development and marketing of high-performance
integrated circuits and solutions, today extended the Company's General Lighting product portfolio
with the introduction of the OZ8022VM LED Driver Controller. The OZ8022VM is designed to address
the high volume, non-dimming incandescent bulb replacement market, which includes PAR lamps, A
bulbs and BR bulbs.

About the OZ8022VM LED Driver Controller

The OZ8022VM supports universal 85V to 265V operation, enabling a single LED bulb to address the
global marketplace, reducing SKUs and increasing operational efficiencies resulting from economy
of scale. World-class LED current regulation and accuracy over the entire universal input range
ensures consistent lumen output globally, regardless of varying line input conditions.

The OZ8022VM features a built-in, high voltage power MOSFET in a cost-effective, small footprint,
8-pin SOP package. The high integration enables a very low BOM count and the absolute lowest cost
at the system BOM level, as well as compact design, accommodating space-constrained applications.

Integrated power factor correction ensures high power factor (>0.9 over the universal 85-265V
input range) and low THD (<20%), enabling bulbs that incorporate the OZ8022VM to meet worldwide
residential and commercial requirements and regulations, such as EPA Energy Star. Industry-leading
efficiency of greater than 88% is maintained across the entire universal voltage range, reducing
energy consumption and simplifying thermal management. During light load conditions, minimum
off-time control maximizes operating efficiency. Low start-up current and operation current also
maximize conversion efficiency.

The OZ8022VM is designed for non-isolated buck converter applications, utilizing quasi-resonant
conversion technology. The OZ8022VM features fast turn-on to meet end-user expectations.
Integrated over-temperature, over-voltage, cycle-by-cycle current limiting, LED open circuit and
LED short circuit protection, with auto-recovery, provide safe and reliable operation.

Product Availability and Additional Information

The OZ8022VM is available in a cost-effective 8-pin SOP package and is in high volume production
now. Samples and evaluation boards are available now for qualified customers.

For additional information, contact O2Micro sales representatives via our website at

About O2Micro

Founded in April 1995, O2Micro 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.

O2Micro 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

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

CONTACT: Scott L. Anderson
         Director of Investor Relations, O2Micro
         Phone: 408.987.5920, x8888
         Email: scott.anderson@o2micro.com

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