The LM22676TJ-5.0 is a SIMPLE SWITCHER® step-down voltage regulator from Texas Instruments (formerly National Semiconductor). This regulator is designed to provide a stable 5V output from a higher input voltage, suitable for various electronic devices and systems.

Applications

• Point-of-load regulators
• Industrial power supplies
• Automotive systems
• Battery-powered devices
• FPGA and microcontroller power

Features

• 3A output current capability.
• Input voltage range up to 42V.
• Fixed 5V output voltage.
• High efficiency.
• Integrated MOSFET switch.
• Thermal shutdown protection.
• Current limit protection.
• Frequency foldback at short circuit.

Benefits

• Provides a stable and regulated 5V power supply for sensitive electronic components.
• Handles a wide range of input voltages, making it suitable for various power sources.
• Delivers high efficiency, reducing power dissipation and heat generation.
• Simplified design and reduced component count with integrated MOSFET.
• Enhanced reliability with built-in protection features like thermal shutdown and current limit.
• Prevents damage to the regulator and the load in case of short circuit conditions.

Additional Details

The LM22676TJ-5.0 operates at a switching frequency of typically 500 kHz. It comes in a TO-263 package, which provides good thermal performance and allows for efficient heat dissipation. The integrated MOSFET switch reduces the need for external components, simplifying the overall design and reducing the board space required. The high efficiency is achieved through the use of synchronous rectification. The thermal shutdown protection ensures that the regulator shuts down automatically if its temperature exceeds a safe limit, preventing damage. The current limit protection limits the output current to a safe level, protecting the regulator and the load from overcurrent conditions. The frequency foldback feature reduces the switching frequency during a short circuit condition, which helps to limit the power dissipation and prevent overheating. This regulator is a versatile and reliable solution for generating a stable 5V power supply in a wide range of applications.