LM2576HV DC-DC 3Amp Buck Supply

The LM2576HV High Voltage Input 3A Power Supply Module is a robust step-down (buck) voltage regulator designed for applications requiring efficient power conversion from higher input voltages. Based on the LM2576HV switching regulator IC, this module is an excellent choice for hobbyists, educators, and professionals who need a reliable power supply solution for their electronics projects. Its wide input voltage range and adjustable output make it ideal for applications ranging from automotive electronics to industrial control systems and DIY power supplies.

Key Features:

• Wide Input Voltage Range: Accepts input voltages from 5V to 50V, making it suitable for automotive, industrial, and high-voltage applications.
• Adjustable Output Voltage: Output voltage range of 1.25V to 26V, configurable via the on-board blue multi-turn potentiometer for precise voltage adjustment.
• High Output Current: Delivers up to 3A continuous output current, suitable for powering microcontrollers, sensors, motors, and other peripherals.
• Compact Design: Small PCB footprint (approximately 43mm x 35mm) for easy integration into space-constrained projects.
• Screw Terminal Connections: Features clearly labelled IN+, IN-, OUT+, and OUT- screw terminals for secure and convenient wiring.
• On-Board Components: Includes input and output electrolytic capacitors (100μF 63V visible on input side, 330μF on output side ) for voltage smoothing and stability.
• Power Inductor: Features a shielded toroidal inductor for efficient energy storage and low electromagnetic interference (EMI).
• Heat Dissipation: Built-in heatsink tab on the LM2576HV IC for improved thermal management during high-current operation.
• High Efficiency: Step-down switching topology provides excellent power conversion efficiency, typically 75-80%, reducing heat generation.
• Regulator IC: LM2576HV step-down switching regulator in TO-220 package with integrated power switch.
• Fixed Switching Frequency: 52kHz typical switching frequency for predictable performance and simplified filter design.
• Protection Features: Built-in thermal shutdown and current limiting protection to safeguard both the module and connected loads.
• Operating Temperature Range: -40°C to +125°C junction temperature for reliable operation in demanding environments.
• Low Dropout Voltage: Minimal voltage differential required between input and output for efficient operation.

Applications

• Automotive Electronics: Ideal for powering microcontrollers and sensors from 12V or 24V vehicle electrical systems.
• Industrial Control Systems: Suitable for generating logic-level voltages from higher industrial supply rails.
• DIY Power Supplies: Perfect for hobbyists building custom bench power supplies with adjustable output voltage.
• Battery-Powered Projects: Efficiently steps down voltage from battery packs to power microcontrollers and peripherals.
• Robotics and Automation: Provides stable power rails for motor drivers, controllers, and sensor arrays.

Why Choose the LM2576HVS High Voltage Input 3A Power Supply Module? The LM2576HVS module combines versatility, efficiency, and ease of use in a compact and affordable package. Its wide input voltage range and adjustable output make it suitable for a diverse range of applications, from automotive projects to industrial prototyping. With robust protection features and excellent thermal performance, this power supply module is a reliable choice for both beginners and experienced makers looking to power their next innovative project.