Texas Instruments

LM2673SX-12

LM2673SX-12 Description

The LM2673SX-12 is a fixed output voltage regulator from Texas Instruments, designed to deliver a stable 12V output at a maximum current of 3A. This device is part of the SIMPLE SWITCHER® series, known for its high efficiency and ease of use. The LM2673SX-12 operates within an input voltage range of 8V to 40V, making it suitable for a variety of power supply applications. It features a switching frequency of 260kHz, which allows for the use of smaller inductors and capacitors, reducing the overall footprint of the power supply design.

The regulator employs a buck topology, which is highly efficient and provides excellent transient response characteristics. The LM2673SX-12 is available in a surface-mount package, specifically Tape & Reel (TR), which is ideal for automated assembly processes. Despite its obsolescence status, the LM2673SX-12 remains a reliable choice for applications requiring a compact, high-performance voltage regulator.

LM2673SX-12 Features

• Fixed Output Voltage: The LM2673SX-12 provides a stable 12V output, ensuring consistent power delivery to connected devices.
• Wide Input Voltage Range: With an input voltage range of 8V to 40V, this regulator can accommodate a variety of power sources, enhancing its versatility.
• High Current Capability: The regulator supports a maximum output current of 3A, making it suitable for applications with high power demands.
• High Switching Frequency: Operating at 260kHz, the LM2673SX-12 allows for the use of smaller passive components, reducing the size and cost of the power supply.
• Buck Topology: The buck topology ensures high efficiency and excellent transient response, making it ideal for applications where power efficiency and quick response times are critical.
• Surface-Mount Package: The surface-mount package type facilitates easy integration into modern PCB designs and supports automated assembly processes.
• Moisture Sensitivity Level: With an MSL rating of 3 (168 Hours), the LM2673SX-12 is suitable for environments with moderate humidity levels.
• REACH Compliance: The regulator is REACH unaffected, ensuring compliance with environmental regulations and standards.

LM2673SX-12 Applications

The LM2673SX-12 is well-suited for a range of applications that require a compact, high-efficiency voltage regulator. Some specific use cases include:

• Telecommunications Equipment: Providing stable power to various components within telecommunication systems, ensuring reliable operation.
• Industrial Automation: Powering control systems and sensors in industrial environments where high efficiency and reliability are paramount.
• Consumer Electronics: Used in power supplies for consumer devices, such as gaming consoles, routers, and other electronics that require a stable 12V supply.
• Automotive Electronics: Suitable for automotive applications where a wide input voltage range and high efficiency are necessary to handle the varying electrical loads.
• Medical Devices: Providing power to medical equipment where consistent voltage and high reliability are crucial for patient safety and device performance.

Conclusion of LM2673SX-12

The LM2673SX-12 from Texas Instruments is a robust and efficient fixed output voltage regulator, ideal for applications requiring a stable 12V supply. Its wide input voltage range, high current capability, and high switching frequency make it a versatile choice for various power supply designs. Despite being marked as obsolete, the LM2673SX-12 remains a reliable option for engineers seeking a compact, high-performance regulator. Its compliance with environmental standards and suitability for automated assembly processes further enhance its appeal in modern electronics manufacturing.