Texas Instruments

LM2672MX-3.3  

DC Switching Voltage Regulators

LM2672MX-3.3 Description

The LM2672MX-3.3 from Texas Instruments is a fixed 3.3V output, 1A step-down (buck) switching voltage regulator designed for efficient power conversion in a compact 8-SOIC package. Part of the SIMPLE SWITCHER® series, it simplifies power supply design with a wide input voltage range of 6.5V to 40V, making it suitable for industrial, automotive, and consumer applications. Operating at a switching frequency of 260kHz, it balances efficiency and component size, reducing the need for large external filters. The regulator is non-synchronous and features REACH compliance, ensuring environmental safety.

LM2672MX-3.3 Features

• Fixed 3.3V Output: Eliminates the need for external feedback resistors, simplifying design.
• High Efficiency (Up to 90%): Minimizes power loss with integrated N-channel MOSFET switch.
• Wide Input Range (6.5V–40V): Supports diverse power sources, including 12V/24V systems.
• 1A Continuous Output Current: Suitable for moderate-power applications.
• 260kHz Switching Frequency: Reduces inductor size while maintaining low noise.
• Built-in Protection: Includes thermal shutdown and current limiting.
• Surface-Mount (SOIC-8) Package: Ideal for space-constrained PCB designs.
• Obsolete Status: Still reliable for legacy designs but consider newer alternatives for new projects.

LM2672MX-3.3 Applications

• Industrial Power Supplies: For PLCs, sensors, and control systems requiring stable 3.3V rails.
• Automotive Electronics: Supports infotainment, telematics, and lighting systems with 12V/24V inputs.
• Consumer Electronics: Used in set-top boxes, routers, and portable devices.
• Embedded Systems: Powers microcontrollers, FPGAs, and peripherals in compact designs.
• Battery-Powered Devices: Efficiently steps down higher battery voltages (e.g., 9V/12V) to 3.3V.

Conclusion of LM2672MX-3.3

The LM2672MX-3.3 is a robust, easy-to-use buck regulator offering high efficiency, wide input range, and compact packaging. While marked obsolete, it remains a viable choice for legacy systems or designs prioritizing proven performance. Its fixed output and integrated protections reduce design complexity, making it ideal for industrial, automotive, and embedded applications. For new designs, consider TI’s modern alternatives with enhanced features like higher efficiency or synchronous rectification.

LM2672MX-3.3 Documents

Download datasheets and manufacturer documentation for LM2672MX-3.3

Datasheets :

LM2672      

HTML Datasheet :

LM2672