LM2575-5.0 Switching Regulator

The LM2575-5.0 is a versatile and reliable step-down (buck) switching regulator designed to provide a fixed 5V output from a higher input voltage. It is part of the LM2575 series from Texas Instruments, known for its ease of use and robust performance in power supply applications. The LM2575-5.0 integrates a high-current switching MOSFET, making it ideal for applications requiring a stable 5V output with high efficiency and minimal external components.

Key Features:

• Fixed output voltage of 5V for simplicity in design
• Capable of supplying up to 1A of output current
• High efficiency up to 80% (depends on load and input voltage)
• Built-in thermal shutdown and overcurrent protection
• Simple external component design with minimal additional circuitry
• Wide input voltage range for flexibility in various applications

Technical Specifications:

• Input Voltage Range: 7V to 40V
• Output Voltage: Fixed at 5V
• Output Current: Up to 1A
• Efficiency: Up to 80% (depends on load and input voltage)
• Switching Frequency: 52 kHz (typical)
• Ripple and Noise: Typically <50mV
• Thermal Shutdown: Integrated
• Overcurrent Protection: Integrated
• Package Type: Available in TO-220 and other surface-mount packages

Applications:

• DC-DC power supplies
• Battery-powered devices
• Power management for electronic circuits
• Voltage regulation in embedded systems
• Power converters for automotive and industrial applications
• DIY electronics projects

Usage:

1. Connect the input voltage to the appropriate pins of the LM2575-5.0, ensuring it is within the specified range.
2. The output voltage is fixed at 5V, so external components such as inductors and capacitors should be selected based on the datasheet recommendations for optimal performance.
3. Connect the load to the output and ensure the current requirements do not exceed the regulator’s capacity.
4. Implement proper heat sinking if operating at high currents to ensure thermal stability and prevent overheating.

Caution:

• Verify that the input voltage is within the specified range to avoid damage.
• Properly size and place external components (e.g., inductors, capacitors) to achieve desired performance and stability.
• Ensure adequate cooling and heat dissipation to maintain reliable operation.

Datasheet:
For detailed technical specifications, refer to the LM2575-5.0 Datasheet.