Texas Instruments

LM2678SD-5.0  

DC Switching Voltage Regulators

LM2678SD-5.0 Description

The LM2678SD-5.0 is a fixed output voltage buck regulator from Texas Instruments, part of the SIMPLE SWITCHER® series. This IC is designed to provide a stable 5V output at a maximum current of 5A, making it suitable for a wide range of power management applications. It operates within an input voltage range of 8V to 40V, ensuring compatibility with various power sources. The regulator features a switching frequency of 260kHz, which allows for the use of smaller inductors and capacitors in the design, reducing the overall footprint and cost of the power solution.

The LM2678SD-5.0 is housed in a 14-pin VSON package, which is ideal for surface mount applications. This package type offers excellent thermal performance and is suitable for high-density PCB layouts. The regulator is designed for positive output configuration and does not employ synchronous rectification. It is important to note that the LM2678SD-5.0 is currently in an obsolete product status, meaning that while it is still available, it may not be recommended for new designs.

LM2678SD-5.0 Features

• Fixed Output Voltage: The LM2678SD-5.0 provides a stable 5V output, which is ideal for applications requiring a consistent power supply.
• Wide Input Voltage Range: With an input voltage range of 8V to 40V, this regulator can handle a variety of input sources, making it versatile for different power management needs.
• High Output Current: Capable of delivering up to 5A of output current, the LM2678SD-5.0 is suitable for applications requiring high power delivery.
• High Switching Frequency: The 260kHz switching frequency allows for the use of smaller passive components, which can reduce the size and cost of the overall power solution.
• Surface Mount Package: The 14-pin VSON package is designed for surface mount applications, offering excellent thermal performance and high-density PCB compatibility.
• Positive Output Configuration: The regulator is designed for positive output, which is commonly required in many electronic systems.
• Obsolete Product Status: While the LM2678SD-5.0 is still available, it is considered obsolete. Engineers should consider this when planning for long-term availability and support.

LM2678SD-5.0 Applications

The LM2678SD-5.0 is well-suited for applications that require a reliable and efficient power supply with a fixed 5V output. Some specific use cases include:

• Consumer Electronics: Ideal for powering devices such as smartphones, tablets, and other portable electronics that require a stable 5V supply.
• Industrial Equipment: Suitable for industrial applications where a robust and efficient power solution is needed, such as in control systems and instrumentation.
• Telecommunications: Can be used in telecom equipment where a stable power supply is critical for reliable operation.
• Automotive Electronics: Applicable in automotive systems where a wide input voltage range and high output current are necessary.

Conclusion of LM2678SD-5.0

The LM2678SD-5.0 is a robust and efficient buck regulator from Texas Instruments, offering a stable 5V output at up to 5A. Its wide input voltage range and high switching frequency make it a versatile choice for various power management applications. The 14-pin VSON package ensures excellent thermal performance and compatibility with high-density PCB layouts. While the product is currently obsolete, it remains a reliable option for existing designs. Engineers should consider the availability and support implications when incorporating the LM2678SD-5.0 into new projects.

LM2678SD-5.0 Documents

Download datasheets and manufacturer documentation for LM2678SD-5.0

Datasheets :

LM2678      

HTML Datasheet :

LM2678