LM2596 DC-DC Buck Converter Module

The LM2596 DC-DC Buck Converter Module is a compact, high-efficiency step-down voltage regulator that converts a higher DC voltage into a lower, adjustable DC voltage. Based on the LM2596 switching regulator IC, this module can supply up to 3A of output current, making it ideal for powering a wide range of electronic devices, including Arduino boards, LEDs, battery chargers, and Raspberry Pi accessories.

With a simple adjustable potentiometer, the output voltage can be fine-tuned from 1.25V to 35V, allowing for flexible integration into custom power supply systems. It also features onboard capacitors and a heat-dissipating inductor for stable and reliable operation.

Key Features:

• Adjustable Output Voltage: 1.25V to 35V (via onboard potentiometer)

• High Output Current: Up to 3A (with proper heat dissipation)

• High Efficiency: ≥80% (up to 92% depending on input/output differential)

• Built-in Filter Capacitors: Reduces voltage ripple and noise

• Onboard Voltage Display (Optional): Some versions include a 7-segment display for real-time voltage monitoring

Specifications:

• Input Voltage: 4V to 40V DC

• Output Voltage: 1.25V to 35V DC (adjustable)

• Output Current: Up to 3A (typical recommended ≤2A for sustained use)

• Conversion Efficiency: Up to 92%

• Switching Frequency: ~150kHz

• Voltage Regulation: ±0.5%

• Load Regulation: ±0.5%

• Output Ripple: <30mV (under load)

• Module Dimensions: Approx. 45mm × 20mm × 14mm

• Operating Temperature: -40°C to +85°C

Applications:

• Power supply for Arduino, ESP32, and Raspberry Pi

• Battery charging and solar regulator circuits

• Adjustable power supply for DIY electronics

• LED strip voltage regulation

• Robotics and embedded systems

This LM2596 buck converter is a must-have in any maker’s toolkit, offering versatile and reliable voltage regulation for countless low-voltage applications.