STMicroelectronics

L4973D5.1

L4973D5.1 Description

The L4973D5.1 is a high-performance, adjustable output voltage DC switching voltage regulator from STMicroelectronics, designed for applications requiring precise voltage regulation and efficient power management. With a fixed output voltage of 5.1V and a maximum output current of 3.5A, this Buck regulator offers exceptional performance in a wide range of electronic devices.

L4973D5.1 Features

• Adjustable Output Voltage: The L4973D5.1 features an adjustable output voltage, allowing for precise voltage regulation tailored to specific application requirements.
• Wide Input Voltage Range: With an input voltage range of 8V to 55V, this regulator can handle a wide variety of power sources, providing flexibility in system design.
• High Frequency Switching: Operating at a switching frequency between 100kHz and 300kHz, the L4973D5.1 offers efficient power conversion with minimal power loss.
• Single Output Configuration: This Buck regulator features a single positive output, simplifying the design of power supply systems.
• Surface Mount Package: The L4973D5.1 is available in a 20-pin SOIC surface mount package, making it suitable for space-constrained applications.
• RoHS Compliance: This regulator is compliant with the RoHS3 directive, ensuring environmental responsibility and compatibility with green electronics manufacturing processes.

L4973D5.1 Applications

The L4973D5.1 is ideal for a variety of applications where efficient power regulation and management are critical. Some specific use cases include:

• Telecommunications Equipment: Providing stable power supply to communication devices, ensuring reliable operation and performance.
• Industrial Automation Systems: Powering control systems and sensors in industrial environments, where consistent power supply is essential for system stability.
• Portable Electronics: Used in battery-powered devices such as laptops, tablets, and smartphones, where efficient power management is crucial for extended battery life.

Conclusion of L4973D5.1

The L4973D5.1 is a versatile and efficient DC switching voltage regulator, offering adjustable output voltage, a wide input voltage range, and high-frequency switching capabilities. Its single output configuration and surface mount package make it suitable for a wide range of applications, from telecommunications to industrial automation and portable electronics. While the product is now considered obsolete, its unique features and advantages make it a valuable option for legacy systems and applications where this specific regulator is still required.