LM2596 DC-DC Buck Converter Module with Display

LM2596 Adjustable Buck Module with LED Voltmeter Product Overview: The LM2596 DC-DC buck converter module is an adjustable power supply solution with an integrated LED voltmeter. It accepts a wide input range and provides a finely adjustable output for electronics, automotive, battery-powered DIY projects, and laboratory use. The onboard display shows IN and OUT voltages and supports user calibration for improved accuracy. Designed for efficient step-down conversion with built-in reverse-polarity protection; ensure adequate heat dissipation for high-current operation. How it helps Use this module to create stable low-voltage rails from higher-voltage sources (e.g., 12V→5V, 24V→12V), power microcontrollers, charge small battery packs, or build adjustable bench supplies. The display and calibration feature makes it easy to set and verify voltages without external meters. Specifications Model: LM2596 Type: DC-DC Buck Converter Module with Display Input Voltage: 4.5V – 40V DC (ensure input ≥ output +1.5V) Output Voltage: 1.25V – 37V DC (continuously adjustable) Output Current: Up to 3A (recommended ≤ 2A continuous for thermal safety) Rated Power: ~15–20W (requires heat dissipation above recommended load) Display Range: 0 – 40V (LED voltmeter shows IN/OUT) Display Accuracy: Typical ±0.05V to ±0.1V (supports calibration) Conversion Efficiency: Up to ~88% (depends on VIN, VOUT, and load) Operating Temperature: −40°C to +85°C Protections: Reverse polarity protection; observe thermal limits PCB Material: FR4 with large copper area for heat dissipation User Controls: Touch-buttons for switching display (IN/OUT) and voltage calibration Notes: If output equals input, turn the potentiometer counterclockwise ~20 turns and verify wiring.