Texas Instruments

LM3671MF-2.8  

DC Switching Voltage Regulators

LM3671MF-2.8 Description

The LM3671MF-2.8 is a fixed-output, positive buck switching voltage regulator designed by Texas Instruments. This IC offers a robust and efficient solution for applications requiring a stable 2.8V output at up to 600mA. The regulator operates within a wide input voltage range of 2.7V to 5.5V, making it suitable for various power supply scenarios. Its high-frequency switching at 2MHz allows for the use of smaller inductors and capacitors, reducing the overall footprint and cost of the design. The LM3671MF-2.8 also features a synchronous rectifier, enhancing efficiency and performance. Despite its obsolescence, the LM3671MF-2.8 remains a reliable choice for applications where its specific voltage and current requirements are critical.

LM3671MF-2.8 Features

• Fixed Output Voltage: Ensures a stable 2.8V output, ideal for applications requiring precise voltage levels.
• Wide Input Voltage Range: Operates efficiently between 2.7V and 5.5V, accommodating a variety of input power sources.
• High Output Current: Delivers up to 600mA, suitable for powering demanding devices and components.
• High Switching Frequency: 2MHz switching frequency enables the use of smaller, more compact passive components, reducing the overall size and weight of the design.
• Synchronous Rectification: Improves efficiency and reduces power loss, enhancing overall system performance.
• Surface Mount Packaging: The SOT23-5 package is ideal for surface mount applications, facilitating easy integration into compact PCB designs.
• Moisture Sensitivity Level 1: Suitable for unlimited exposure to moisture, ensuring reliability in various environmental conditions.
• REACH Compliance: Classified as REACH Unaffected, ensuring compliance with environmental and safety regulations.

LM3671MF-2.8 Applications

The LM3671MF-2.8 is particularly well-suited for applications that demand a stable 2.8V supply with high efficiency and compact design. Some specific use cases include:

• Portable Devices: Ideal for powering low-voltage components in portable electronics, such as smartphones, tablets, and wearable devices.
• Embedded Systems: Provides a reliable power source for microcontrollers, sensors, and other low-power embedded components.
• Communication Equipment: Suitable for powering RF and analog circuits in communication devices, ensuring stable operation and minimal power loss.
• Industrial Control Systems: Can be used in various industrial applications where precise voltage regulation and high efficiency are required.

Conclusion of LM3671MF-2.8

The LM3671MF-2.8 is a versatile and efficient buck switching voltage regulator that offers a stable 2.8V output with up to 600mA of current. Its wide input voltage range, high switching frequency, and synchronous rectification make it an excellent choice for applications requiring compact design and high efficiency. Despite being marked as obsolete, the LM3671MF-2.8 remains a reliable solution for specific voltage and current requirements. Its surface mount packaging and moisture sensitivity level 1 rating ensure ease of integration and reliability in various environments. For applications demanding precise 2.8V regulation and high efficiency, the LM3671MF-2.8 is a robust and effective choice.

LM3671MF-2.8 Documents

Download datasheets and manufacturer documentation for LM3671MF-2.8

Datasheets :

LM3671 Datasheet      

Design Resources :

LM3671 Design with WEBENCH® Power Designer      

HTML Datasheet :

LM3671 Datasheet      

PCN Design/Specification :

Cu Wire 21/Mar/2017       LM3671/-Q1 DataSheet Update 21/Jul/2016