TN3050H-12WY

TN3050H-12WY is a high-performance power management IC manufactured by STMicroelectronics, designed for efficient voltage regulation in compact and energy-sensitive applications. It operates as a low-dropout (LDO) linear regulator, delivering a stable 12V output with excellent load and line regulation. The device supports an input voltage range from 14V to 28V, making it suitable for automotive and industrial environments where wide input variations are common. This IC features a maximum output current of 500mA, enabling reliable operation under moderate load conditions while maintaining low quiescent current—typically less than 1.5mA—which contributes to improved system efficiency and reduced thermal dissipation. Its robust protection mechanisms include over-current protection (OCP), over-temperature shutdown (OTSD), and short-circuit protection, ensuring safe operation even under fault conditions. These protections enhance reliability in harsh operating environments such as those found in automotive electronics or industrial control systems. The TN3050H-12WY is packaged in a thermally enhanced TO-220-3L package, facilitating effective heat transfer and allowing operation at elevated ambient temperatures without performance degradation. This makes it ideal for applications requiring long-term stability and minimal maintenance. Additionally, the device exhibits low dropout voltage—less than 1.2V at full load—which allows efficient use of input power, particularly in battery-powered systems where maximizing runtime is critical. Key applications include automotive lighting, sensor power supplies, embedded control units, and industrial equipment requiring a stable 12V rail from a higher input voltage. It is also used in consumer electronics such as smart home devices and portable instrumentation where space constraints and power efficiency are paramount. The device’s ability to deliver consistent performance across varying input voltages and environmental conditions makes it a versatile solution for modern power management needs. Engineered for compliance with AEC-Q100 standards, the TN3050H-12WY meets stringent automotive qualification requirements, ensuring durability and reliability in vehicle systems. Its design supports both continuous and intermittent operation modes, offering flexibility for diverse application scenarios. Overall, this LDO regulator combines high efficiency, robust protection, and ease of integration into existing designs, making it a preferred choice for engineers seeking dependable power solutions in demanding environments.