LM2596 DC-DC Buck Converter Module with Voltmeter Display

LM2596 DC Buck Step Down Power Converter Module is a versatile and efficient voltage regulator designed to step down a higher DC voltage to a lower one with precision. It features an onboard digital voltmeter display for real-time voltage monitoring, making it ideal for powering microcontrollers, sensors, and other low-voltage electronic devices from higher voltage sources.

Key Features:

• Adjustable Output Voltage: Step-down capability with output range from 1.25V to 35V.
• Digital Voltmeter Display: Built-in 3-digit 7-segment LED display shows input or output voltage.
• High Efficiency: Up to 92% conversion efficiency under optimal conditions.
• Convenient Adjustment: Potentiometer for precise output voltage tuning.
• Compact Module: Ideal for DIY electronics, embedded systems, and test setups.

Technical Specifications:

• Input Voltage: 4V to 40V DC
• Output Voltage: 1.25V to 35V DC (adjustable)
• Output Current: Up to 2A (continuous), 3A (peak with cooling)
• Conversion Efficiency: 75% to 92% (depending on input/output)
• Voltage Display Range: 0V to 40V
• Voltage Display Precision: ±0.1V
• Regulator IC: LM2596S-ADJ

Mechanical Specifications:

• Board Type: Fully assembled PCB module
• Display: 3-digit red LED 7-segment display
• Adjustment: Multi-turn potentiometer
• Connectors: Screw terminal blocks for input and output

Dimensions:

• Length: ~66mm
• Width: ~36mm
• Height: ~14mm (including components)

Pinout and Wiring:

• VIN+ / VIN-: Connect higher voltage input source
• VOUT+ / VOUT-: Connect to the load (regulated voltage output)
• S1 Button: Switch display between input and output voltage
• Potentiometer: Rotate clockwise to increase output voltage

Datasheet Reference:

• Search for “LM2596 datasheet by Texas Instruments or ON Semiconductor”

Applications:

• Arduino/Raspberry Pi Projects: Power 5V or 3.3V systems from 12V sources
• Battery Charging: Step-down charger circuits for Li-ion or lead-acid batteries
• LED Drivers: Regulate voltage for LED strips and modules
• Bench Power Supply: Build DIY adjustable power sources

Equivalent Models:

• XL4015 Buck Converter: Higher current version (5A max)
• MP2307 Module: Compact 3A buck regulator with SMD design
• LM2596 Fixed Voltage Modules: 5V, 9V, or 12V preset versions

Package Includes:

• 1 x LM2596 DC-DC Buck Converter Module with Voltmeter Display