Mini Adjustable 3A Step-Down Voltage Regulator LM2596 ⚡

Optimize your power rails with this compact LM2596 DC-DC buck converter module. Designed for both electronics hobbyists and professional engineers, it delivers a stable, adjustable step-down voltage for projects based on Arduino, Raspberry Pi, and other microcontroller platforms. The onboard trimpot lets you precisely set the output from 1.25–30V, while supporting up to 3A output current for a wide range of electronics components and modules.

Key Highlights 🔎

• Wide input range: 4–35V DC
• Adjustable output: 1.25–30V DC via onboard trimpot
• High output current: up to 3A (subject to thermal conditions)
• Compact footprint: 43 × 21.5 × 13.5 mm (L × W × H)
• Clear terminal labeling: IN+, IN−, OUT+, OUT−

Overview ⚙️

This step-down (buck) voltage regulator board uses the industry-standard LM2596 switching regulator to convert a higher DC input voltage to a lower, regulated output. Perfect for powering sensors, servos, LEDs, and other modules in robotics, DIY, and embedded systems, it integrates seamlessly into development setups with Arduino, Raspberry Pi, and similar microcontroller platforms.

Technical Specifications 📐

• Regulator IC: LM2596 (step-down switching regulator)
• Input Voltage: 4–35V DC
• Output Voltage: 1.25–30V DC (adjustable)
• Maximum Output Current: 3A
• Dimensions: 43 mm × 21.5 mm × 13.5 mm (L × W × H)

Pinout & Connections 🔌

• IN+: Positive input voltage
• IN−: Ground (input)
• OUT+: Positive regulated output voltage
• OUT−: Ground (output)

Typical Applications 🧰

• Powering Arduino, Raspberry Pi peripherals, and microcontroller development boards
• Voltage regulation for electronics components, sensors, and communication modules
• Robotics and RC projects requiring stable lower voltage rails
• LED strips, small motors, and battery-powered systems
• Bench power supply builds and prototyping

Usage Notes & Best Practices ✅

• This is a step-down (buck) converter: the input voltage must always exceed the output voltage. Allow adequate headroom for reliable regulation.
• Adjust the output using the trimpot while monitoring with a multimeter before connecting your load.
• Do not exceed 3A output; thermal performance depends on load, input/output differential, and airflow. Add heatsinking or cooling if needed.
• Observe polarity on IN+/IN− and OUT+/OUT− to avoid damage.

Why Choose This Module ⭐

• Proven LM2596 architecture for robust DC-DC conversion
• Wide input/output range suitable for many electronics projects
• Compact module size for easy integration in enclosures and prototypes

Resources 📄

For more detailed information, please refer to the datasheet.