The LM2596S is a high-efficiency step-down (buck) converter module that delivers a stable, adjustable DC output from a higher-voltage DC source. Designed around the popular LM2596S switching regulator IC, it provides excellent load regulation and low ripple, making it ideal for battery-powered systems, LED drivers, and Arduino or Raspberry Pi projects where a clean, lower voltage is required.
Technical Specifications
Core Specifications
Input voltage range 4.5 V to 40 V DC
Adjustable output voltage 1.25 V to 37 V DC
Maximum output current 3 A continuous with proper heat dissipation
Conversion efficiency up to 92 % depending on input/output conditions
Switching frequency 150 kHz for fast transient response
Electrical & Physical
Built-in high-current inductor and Schottky diode for stable operation
Output voltage set by onboard multi-turn potentiometer
Module dimensions approximately 45 mm × 20 mm × 14 mm
Environmental
Operates reliably from –40 °C to +85 °C ambient temperature
Integrated thermal shutdown and short-circuit protection for safety
Why Choose the LM2596S
Compact, easy-to-use module requiring no external components
High efficiency reduces heat generation and extends battery life
Precise voltage adjustment for sensitive electronics
Critical Uses
Power supply for Arduino, ESP32, Raspberry Pi and other microcontrollers
Efficient step-down supply for LED strips and sensors
Battery-powered devices and DIY electronics projects
Pro Tips
Adjust the output voltage before connecting to your load
Provide adequate heat sinking when drawing currents above 2 A
Use quality input and output capacitors for lowest ripple
Package Includes
1 × LM2596S DC-DC Buck Converter Module