Introduction: Micrel was founded in 1978 and is located in California, USA. It is a leading manufacturer of integrated circuit solutions for the global analog, Ethernet, and high bandwidth markets. The company's chip manufacturing factory is located in San Jose, California, with regional sales, support offices, and advanced technology design centers located throughout the Americas, Europe, and Asia. In addition, the company also has a wide global network of sales representatives and distributors. In 1981, Micrel acquired its first independent semiconductor processing equipment. Initially focused on custom and professional manufacturing, other IC manufacturers such as McRae eventually expanded to develop their own semi custom and standard products of intelligent power integrated circuits. Micrel utilizes its world-class wafer manufacturing facility, which includes a range of process technologies, to enable rapid development and introduction of the most advanced products by Micrel Semiconductor. Mairui Semiconductor's manufacturing technology and world-class design team, combined with their professional knowledge, develop and produce these high-performance products to provide our customers with the solutions they need, competing in today's fast-paced technology industry. Micrel products include: high-speed logic& Clock IC, high-speed communication IC, linear and interface IC, power IC, protective power switch, RF IC, and other semi customized products. These products address a rapidly growing terminal market across a wide range, including mobile phones, portable and enterprise computing, enterprise and home networks, wide area and metropolitan area networks, and industrial equipment. Today, in addition to its strength in innovative processes and testing technologies, Micrel has expanded its business diversification and become a recognized leader in the high-performance analog power control and management market.