Texas Instruments

LM2671MX-5.0  

DC Switching Voltage Regulators

LM2671MX-5.0 Description

The LM2671MX-5.0 is a fixed 5V output, 500mA step-down (buck) switching voltage regulator from Texas Instruments' SIMPLE SWITCHER® series. Designed for efficiency and compact power solutions, it operates with a wide 6.5V to 40V input range, making it suitable for industrial, automotive, and consumer applications requiring stable 5V power from higher voltage sources. The regulator integrates a 260kHz switching frequency, enabling the use of smaller external components while minimizing EMI. Packaged in an 8-pin SOIC and rated for MSL 1 (Unlimited) moisture sensitivity, it is ideal for surface-mount designs. Though marked Obsolete, it remains a reliable choice for legacy systems.

LM2671MX-5.0 Features

• Fixed 5V Output: Precision-regulated output with ±2% tolerance.
• High Efficiency (Up to 90%): Reduces heat dissipation compared to linear regulators.
• Wide Input Range (6.5V–40V): Supports 12V/24V automotive or industrial buses.
• 260kHz Switching Frequency: Balances efficiency and component size.
• Integrated N-Channel MOSFET: Simplifies design with fewer external parts.
• Non-Synchronous Rectification: Cost-effective for moderate current applications.
• Protections: Includes thermal shutdown and current limiting.
• Surface-Mount Package (SOIC-8): Compact footprint for space-constrained PCBs.

LM2671MX-5.0 Applications

• Industrial Systems: Powering sensors, PLCs, or microcontrollers from 24V rails.
• Automotive Electronics: Convert 12V/24V battery voltage to 5V for infotainment or telematics.
• Consumer Devices: Efficient power supply for set-top boxes, routers, or IoT modules.
• Legacy Equipment Upgrades: Replacing bulky linear regulators in existing designs.
• Portable Instruments: Battery-powered devices requiring stable 5V from Li-ion packs.

Conclusion of LM2671MX-5.0

The LM2671MX-5.0 excels in delivering efficient, compact 5V power conversion for medium-current applications. Its wide input range, high efficiency, and robust protections make it a versatile choice despite its obsolete status. While newer synchronous models may offer higher efficiency, the LM2671MX-5.0 remains a cost-effective solution for designs prioritizing simplicity and reliability. Engineers should evaluate alternatives for high-volume production but can leverage this regulator for prototyping or legacy maintenance.

LM2671MX-5.0 Documents

Download datasheets and manufacturer documentation for LM2671MX-5.0

Datasheets :

LM2671 Datasheet      

HTML Datasheet :

LM2671 Datasheet