O2Micro Receives Patent Grant For New Battery Charging IC Architecture

SANTA CLARA, Calif. and GEORGE TOWN, Grand Cayman--(BUSINESS WIRE)--Jan. 2, 2003--O2Micro® International Limited (Nasdaq:OIIM - News), a leading supplier of innovative power management and security ICs to mobile computer and communications manufacturers, was granted 28 claims under United States patent number 6,498,461 for its voltage mode battery charging IC architecture.

"This patent describes a new core architecture for a complete family of O2Micro charger IC solutions for notebook computers," remarked Daryl Nees, Marketing Manager for O2Micro's Intelligent Power business unit. "With this new technology, O2Micro provides the design community with higher charge accuracy, simplified loop compensation, and a lower solution parts count than other available battery charge controllers."


O2Micro's patented voltage mode architecture features:


Only one compensating point for all control loops, minimizing external capacitor count and simplifying feedback loop compensation

An enhanced current sense amplifier that improves accuracy

A sense resistor feedback circuit that eliminates a filter capacitor and improves full-charge accuracy

About O2Micro


Founded in April 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 on line e-commerce, Intelligent Inverter® and Battery Management IC's.


O2Micro International maintains an extensive portfolio of intellectual property with 859 patent claims granted, and over 3600 more pending. The company maintains offices worldwide. Additional company and product information can be found on the company website at www.o2micro.com.