LM2596S DC-DC Converter 3A Step Down Module
The LM2596S DC-DC Converter is a high-efficiency step-down (buck) voltage regulator module designed to convert higher DC voltages into stable, lower DC outputs. It supports an input voltage range of up to 40V and delivers up to 3A of continuous load current, making it ideal for powering a wide range of electronics. Featuring adjustable output voltage, low ripple, and reliable performance, this module is perfect for embedded systems, battery charging, LED lighting, and hobbyist electronics projects.
How It Works
The LM2596S module uses a fixed-frequency switching regulator IC to efficiently step down the input voltage. By adjusting the onboard potentiometer, users can set the output voltage to match the specific requirements of their load. Its internal circuitry includes thermal shutdown and overcurrent protection, ensuring safe operation even under heavy loads. Operating at a 150 kHz switching frequency, it provides fast response and stable output with minimal heat generation.
Key Features
Input voltage range: 4.5V to 40V DC
Adjustable output voltage from 1.25V to 37V DC
High efficiency up to 92%
Continuous output current up to 3A
Low output ripple for stable operation
Onboard potentiometer for easy adjustment
Built-in thermal shutdown and overcurrent protection
Compact design suitable for a wide range of applications
Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 4.5V to 40V DC |
| Output Voltage Range | 1.25V to 37V DC (adjustable) – |
| Maximum Output Current | 3A continuous |
| Efficiency | Up to 92% |
| Switching Frequency | 150 kHz |
| Output Ripple | ≤ 30 mV (typical) |
| Module Size | Approx. 43 mm × 21 mm × 14 mm |
| Operating Temperature | -40°C to +85°C |
Pin Configuration
| Pin Label | Description |
|---|---|
| IN+ | Positive DC input |
| IN− | Negative DC input (GND) |
| OUT+ | Positive DC output |
| OUT− | Negative DC output (GND) |
Applications
Power supply for Arduino, Raspberry Pi, and microcontroller projects
LED lighting drivers
Battery charging systems
Step-down regulator for automotive electronics
DIY electronics and robotics projects
Motor speed controllers
