Shenzhen Oneic Microelectronics Co., Ltd., headquartered in Shenzhen, China, is a domestic semiconductor company established in the early 2010s. It specializes in the design and sales of power management integrated circuits and discrete components. The company's core product lines include linear voltage regulators, DC-DC converters, battery charging management ICs, and MOSFETs. Its product series, branded under 'ONEIC', are known for cost-effective solutions targeting the consumer electronics, home appliances, and industrial control markets. Oneic's LDO series (e.g., ON1117, ON78Lxx) are widely used in set-top boxes, routers, and power adapters. The company has developed a comprehensive portfolio of power MOSFETs covering low to medium voltage applications. With a focus on domestic replacement demand, Oneic has gained traction in the highly competitive Chinese market. Although not ranked globally, it is recognized as an emerging brand offering reliable performance at competitive prices. The company leverages local market understanding to rapidly iterate products and provide responsive technical support. Oneic continues to expand its product roadmap into AC-DC controllers and protection devices.