LM2596S DC to DC Buck Converter 3-40V Adjustable Voltage Module
LM2596S DC to DC Buck Converter 3-40V Adjustable Voltage Module
LM2596S Adjustable Buck Converter – Efficient DC-DC Voltage Regulation
The LM2596S DC to DC Buck Converter is a compact, high-efficiency step-down voltage regulator designed for hobbyists, engineers, and electronics enthusiasts. With an input range of 3V–40V and a continuously adjustable output of 1.5V–35V, this module delivers reliable, stable power conversion for a wide range of electronic projects and devices.
Key Features
- Wide Voltage Range: Accepts DC input from 3V to 40V and outputs a continuously adjustable 1.5V to 35V — versatile enough for most electronics projects.
- High Output Current: Supports up to 3A maximum output current for powering demanding circuits and components.
- Adjustable Output: Simply turn the onboard blue potentiometer to fine-tune the output voltage to your exact requirements. Note: factory default is set high — rotate approximately 15–20 turns counter-clockwise to begin stepping the voltage down.
- SANYO Solid-State Capacitors: Built with premium SANYO solid-state capacitors and high-Q inductors for stable, low-noise performance.
- LED Output Indicator: Integrated LED indicator provides a visual confirmation that the module is powered and outputting voltage.
- Thickened PCB: Features a 36µm thickened circuit board for improved durability and heat handling.
- Compact Form Factor: Measures just 4.3 × 2.1 cm (1.69 × 0.83 in) — ideal for tight enclosures and space-constrained builds.
- No Boost Function: This is a step-down (buck) converter only — input voltage must be at least 1.5V higher than the desired output voltage.
Specifications
- Model: LM2596S
- Input Voltage: DC 3V – 40V
- Output Voltage: DC 1.5V – 35V (continuously adjustable)
- Max Output Current: 3A
- Board Size: 4.3 × 2.1 cm / 1.69 × 0.83 in
- Capacitors: SANYO solid-state
- PCB Thickness: 36µm thickened
- Indicator: LED output indicator
How to Use
- Connect the module to your power source.
- Use a multimeter to monitor the output voltage.
- Adjust the blue potentiometer — turn counter-clockwise (CCW) to reduce voltage, clockwise (CW) to increase it.
- Set to your required output voltage and connect your load.
Package Contents
- 1 × LM2596S DC to DC Buck Converter Module
Made in Mainland China.
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Frequently Asked Questions
Q: What is the LM2596S DC to DC buck converter used for?
A: The LM2596S buck converter is a step-down voltage regulator used in DIY electronics, Arduino projects, robotics, battery charging circuits, and other applications where you need to reduce and precisely control DC voltage. It accepts a wide input of 3V–40V and outputs an adjustable 1.5V–35V.
Q: Can I use this converter to boost voltage (step up)?
A: No — the LM2596S is a step-down (buck) converter only. It cannot boost voltage. The input voltage must always be at least 1.5V higher than your desired output voltage for the module to function correctly.
Q: How do I adjust the output voltage on the LM2596S module?
A: Use the blue potentiometer on the board. Connect your power source, then use a multimeter to monitor the output voltage while slowly turning the potentiometer. The unit ships at maximum voltage by default — turn counter-clockwise (CCW) approximately 15–20 turns to begin reducing the output to your target level.
Q: What is the maximum current this DC-DC converter can handle?
A: The LM2596S buck converter supports a maximum output current of 3A. For sustained high-current applications, ensure adequate airflow or heat sinking around the module.