Texas Instruments

LM2678SDX-3.3

LM2678SDX-3.3 Description

The LM2678SDX-3.3 is a fixed output voltage regulator from Texas Instruments, part of the SIMPLE SWITCHER® series. This buck converter is designed to provide a stable 3.3V output at a maximum current of 5A. It operates within an input voltage range of 8V to 40V, making it suitable for a wide variety of power supply applications. The regulator features a switching frequency of 260kHz, which allows for the use of smaller external components while maintaining high efficiency. The LM2678SDX-3.3 is available in a surface-mount 14-pin VSON package, which is ideal for compact designs. Despite being marked as obsolete, it remains a reliable choice for applications requiring a robust and efficient power solution.

LM2678SDX-3.3 Features

• Fixed Output Voltage: The LM2678SDX-3.3 provides a stable 3.3V output, ensuring consistent power delivery to connected devices.
• Wide Input Voltage Range: With an input voltage range of 8V to 40V, this regulator can handle a variety of input sources, enhancing its versatility.
• High Output Current: Capable of delivering up to 5A, it supports high-power applications and multiple devices.
• High Switching Frequency: Operating at 260kHz, the regulator allows for the use of smaller inductors and capacitors, reducing the overall footprint and cost of the power supply.
• Positive Output Configuration: Ensures compatibility with most electronic systems requiring a positive voltage rail.
• Surface-Mount Packaging: The 14-pin VSON package is suitable for surface-mount technology, facilitating integration into compact and high-density designs.
• Moisture Sensitivity Level 1: The MSL 1 rating indicates that the component is not moisture-sensitive, simplifying handling and storage processes.
• REACH Unaffected: Compliance with REACH regulations ensures that the product is free from harmful substances, making it environmentally friendly.
• ECCN Classification: Classified under EAR99, this product is not subject to specific export controls, facilitating international distribution.

LM2678SDX-3.3 Applications

The LM2678SDX-3.3 is ideal for a range of applications where a stable and efficient power supply is required. Its fixed 3.3V output and high current capability make it suitable for:

• Embedded Systems: Providing power to microcontrollers, sensors, and other low-voltage components.
• Communication Equipment: Supplying power to routers, switches, and other networking devices.
• Industrial Controls: Powering PLCs, motor controllers, and other industrial electronics.
• Consumer Electronics: Used in devices such as set-top boxes, gaming consoles, and smart home appliances.
• Automotive Electronics: Suitable for powering infotainment systems, ECUs, and other automotive components.

Conclusion of LM2678SDX-3.3

The LM2678SDX-3.3 from Texas Instruments is a robust and efficient buck converter that offers a stable 3.3V output at up to 5A. Its wide input voltage range, high switching frequency, and compact surface-mount package make it an ideal choice for a variety of power supply applications. Despite being marked as obsolete, its reliability and performance continue to make it a valuable component for engineers and designers. The LM2678SDX-3.3 stands out for its versatility, efficiency, and ease of integration, ensuring it remains a preferred option in the power management segment.