The LM22672MRE-5.0 is a SIMPLE SWITCHER® step-down voltage regulator from Texas Instruments (formerly National Semiconductor). It's designed to provide a highly efficient and easy-to-use solution for converting higher input voltages to a stable 5V output. It integrates all the necessary components for a complete step-down converter, except for a few external passive components, simplifying the design process. The device operates at a high switching frequency, allowing for the use of smaller external components.

Applications:

• Point-of-Load (POL) Regulators
• Industrial Power Supplies
• Automotive Power Supplies
• Battery-Powered Systems
• FPGA and Microprocessor Power

Features:

• Wide Input Voltage Range: Operates from 4.5V to 42V.
• 5V Fixed Output Voltage: Provides a stable and accurate 5V output.
• High Efficiency: Up to 90% efficiency reduces power dissipation.
• Integrated MOSFET: Simplifies design and reduces external component count.
• Current Limit Protection: Protects the device and the load from overcurrent conditions.
• Thermal Shutdown Protection: Protects the device from overheating.
• Frequency Foldback: Reduces switching frequency during short-circuit conditions to prevent overheating.

Benefits:

• Simplified Design: Minimal external components required.
• High Efficiency: Reduces power consumption and heat generation.
• Robust Protection: Ensures reliable operation in harsh environments.
• Compact Solution: Small footprint saves board space.
• Cost-Effective: Reduces system cost due to integrated features.

Additional Details:

The LM22672MRE-5.0 can deliver up to 500mA of output current. The switching frequency is typically around 500kHz. The device is available in an 8-pin SOIC package with an exposed pad for improved thermal performance. The MRE suffix indicates the specific package option. The device utilizes a current-mode control architecture for stable operation and fast transient response. The enable pin allows for easy power sequencing. The thermal shutdown threshold is typically around 150°C. The device is RoHS compliant. The SIMPLE SWITCHER family is known for its ease of use and robust performance.