Texas Instruments

LM2677SX-12  

DC Switching Voltage Regulators

LM2677SX-12 Description

The LM2677SX-12 is a fixed-output, positive buck DC-DC switching voltage regulator from Texas Instruments, designed to deliver a consistent 12V output at up to 5A of current. This regulator operates within an input voltage range of 8V to 40V, making it suitable for a wide variety of power supply applications. The LM2677SX-12 features a switching frequency of 260kHz, which allows for the use of smaller inductors and capacitors, thereby reducing the overall footprint of the power supply design. The regulator is housed in a surface-mount DDPAK package, which is ideal for compact and high-density PCB layouts. Despite its obsolescence, the LM2677SX-12 remains a reliable choice for applications requiring a robust and efficient power conversion solution.

LM2677SX-12 Features

• Fixed Output Voltage: The LM2677SX-12 provides a stable 12V output, ensuring consistent performance in applications where a fixed voltage is required.
• 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 supply configurations.
• High Current Capability: Capable of delivering up to 5A of output current, the LM2677SX-12 is suitable for high-power applications.
• Buck Topology: Utilizing a buck converter topology, the LM2677SX-12 offers high efficiency and low power loss, which is crucial for energy-sensitive applications.
• Surface-Mount Packaging: The DDPAK package allows for easy integration into compact designs, enhancing the flexibility of the regulator in various electronic systems.
• 260kHz Switching Frequency: This frequency enables the use of smaller passive components, reducing the size and cost of the power supply while maintaining high efficiency.
• Moisture Sensitivity Level 3: The MSL 3 rating (168 hours) ensures that the regulator can withstand moderate levels of moisture exposure during manufacturing processes.
• REACH Unaffected: Compliance with REACH regulations ensures that the LM2677SX-12 is free from harmful substances, making it environmentally friendly and suitable for a wide range of applications.

LM2677SX-12 Applications

The LM2677SX-12 is well-suited for applications that require a reliable and efficient power conversion solution. Some specific use cases include:

• Telecommunications: Providing stable power to base stations, repeaters, and other telecom equipment.
• Industrial Control Systems: Ensuring consistent power supply to PLCs, sensors, and actuators.
• Embedded Systems: Powering microcontrollers, FPGAs, and other embedded components.
• Automotive Electronics: Supplying power to ECUs, infotainment systems, and other automotive electronic modules.
• Consumer Electronics: Used in power supplies for gaming consoles, set-top boxes, and other consumer devices.

Conclusion of LM2677SX-12

The LM2677SX-12 is a robust and efficient DC-DC switching voltage regulator that offers a fixed 12V output at up to 5A of current. Its wide input voltage range, high switching frequency, and surface-mount packaging make it a versatile and compact solution for various power supply applications. Although it is now considered obsolete, the LM2677SX-12 remains a reliable choice for designers seeking a proven and efficient power conversion solution. Its compliance with REACH regulations and moisture sensitivity level 3 rating further enhance its suitability for modern manufacturing processes.

LM2677SX-12 Documents

Download datasheets and manufacturer documentation for LM2677SX-12

Datasheets :

LM2677      

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LM2677