Texas Instruments

LM2675MX-5.0  

DC Switching Voltage Regulators

LM2675MX-5.0 Description

The LM2675MX-5.0 from Texas Instruments is a high-efficiency step-down (buck) DC-DC switching regulator designed to deliver a fixed 5V output with a maximum current of 1A. It operates over a wide input voltage range of 8V to 40V, making it suitable for industrial, automotive, and power supply applications where stable voltage conversion is critical. The regulator integrates a 260kHz switching frequency, ensuring compact external component sizing while maintaining 90% typical efficiency. Packaged in an 8-pin SOIC (Tape and Reel), it is optimized for surface-mount assembly and space-constrained designs.

LM2675MX-5.0 Features

• High Efficiency (90% Typical): Minimizes power loss and heat dissipation.
• Wide Input Range (8V–40V): Supports diverse power sources, including unregulated supplies.
• Fixed 5V Output: Simplified design with no feedback resistors required.
• 1A Output Current: Suitable for moderate-power applications.
• Low Quiescent Current (2500µA Typical): Enhances efficiency in standby modes.
• Integrated Protection: Includes thermal shutdown and current limiting.
• Compact SOIC-8 Package: Ideal for PCB space optimization.
• 260kHz Switching Frequency: Reduces inductor/capacitor size vs. lower-frequency alternatives.

Key Advantage: The LM2675MX-5.0 outperforms basic linear regulators by offering higher efficiency and lower thermal stress in high-input-voltage scenarios. Its fixed output voltage eliminates tuning complexity, while the wide operating temperature range (up to 125°C) ensures reliability in harsh environments.

LM2675MX-5.0 Applications

• Industrial Power Systems: Convert 12V/24V bus voltages to 5V for microcontrollers, sensors, or logic circuits.
• Automotive Electronics: Power infotainment or telematics systems from vehicle batteries (note: not AEC-Q100 qualified).
• Battery-Powered Devices: Efficiently step down Li-ion or lead-acid battery voltages.
• Embedded Systems: Provide stable 5V rails in IoT devices or portable equipment.
• Distributed Power Supplies: Replace bulky linear regulators in multi-board systems.

Conclusion of LM2675MX-5.0

The LM2675MX-5.0 is a robust, cost-effective solution for step-down voltage regulation in demanding environments. Its high efficiency, wide input range, and compact footprint make it ideal for applications requiring reliable 5V power from higher-voltage sources. While not automotive-grade, it excels in industrial and consumer designs where simplicity, performance, and thermal management are priorities. Engineers should note its non-compliance with EU RoHS and presence of SVHC substances, which may restrict use in certain regions.

LM2675MX-5.0 Documents

Download datasheets and manufacturer documentation for LM2675MX-5.0