%20Converter%20Module%20%E2%80%93%203%E2%80%AFA?unique=c0354f7)
%20Converter%20Module%20%E2%80%93%203%E2%80%AFA?unique=c0354f7)
LM2596S DC‑DC Step‑Down (Buck) Converter Module – 3 A
LM2596S DC‑DC Step‑Down (Buck) Converter Module – 3 A Adjustable Output
A compact and efficient LM2596S-based buck converter designed to step down voltage with up to 3 A current. Ideal for powering Arduino, Raspberry Pi, motors, LEDs, and battery charging projects.
📊 Technical Specifications
| Parameter | Specification |
|---|---|
| Input Voltage Range (VIN) | 3 V – 40 V (recommended VIN > VOUT + 2 V) m.youtube.com+15ti.com+15codrey.com+15amazon.com+1onsemi.com+1 |
| Output Voltage (VOUT) | Adjustable from 1.23 V – 37 V |
| Output Current | Typically 2 A continuous, up to 3 A peak (heat-sink recommended) |
| Switching Frequency | 150 kHz fixed |
| Efficiency | Up to ~93 % |
| Standby Current | ~80 µA |
| Protections | Over-temperature shutdown, current limiting, ON/OFF shutdown pin |
| Dimensions | ~43×21×14 mm (including potentiometer) |
| Onboard Adjustments | Multi-turn potentiometer for precise voltage tweaking; ON/OFF pin control |
🔌 Connection Guide
IN+ → Power source (3–40 V)
IN− / GND → Power ground
OUT+ → Regulated output
OUT− / GND → Output ground (common with input)
Tip: Use a multimeter on OUT+ and adjust the potentiometer until desired voltage appears. Ideal for powering Arduino and sensors from higher-voltage supply. reddit.com+12instructables.com+12images.tuyacn.com+12youtube.com
💡 Example Use Case with Arduino
Power a 12 V adapter via the module set to 5 V to supply both a 5 V Arduino and sensors. Ensure current limit doesn’t exceed device draw. reddit.com
▶️ YouTube Tutorial (copy‑paste link)
https://www.youtube.com/watch?v=Lk51i-F1CD4
"LM2596 DC-DC Buck Converter Adjustable Tutorial" – clear demonstration of wiring and voltage tuning instructables.com+6youtube.com+6amazon.com+6
Other helpful videos:
https://www.youtube.com/watch?v=0tEd3XbM_YA – Review & testing instructables.com+7youtube.com+7youtube.com+7
https://www.youtube.com/watch?v=9vMNa-H_PRg – Pinout and circuit explanation codrey.com+9youtube.com+9instructables.com+9
🔋 App & Project Ideas
Use as CC/CV power source for LEDs or battery charging envistiamall.com
Adjustable bench supply for Arduino testing
Powering Wi-Fi modules, motors, and sensors from higher-voltage sources
📄 Official Datasheet
Download the complete LM2596/LM2596S datasheet from TI/Onsemi with pin diagrams, characteristic curves, and protection features:
LM2596 Datasheet PDF youtube.com+7forum.arduino.cc+7youtube.com