The LM2596 DC-DC Step-Down Converter Module is an adjustable buck voltage regulator designed to efficiently convert a higher DC input voltage to a lower, stable DC output voltage. Based on the LM2596 switching regulator IC, it provides high efficiency, low heat generation, and adjustable output voltage, making it ideal for Arduino, ESP32, Raspberry Pi, battery-powered projects, LED lighting, robotics, automotive electronics, and DIY power supplies.
Note: Although the image title mentions “Step-Up Booster”, the module shown is an LM2596 Step-Down (Buck) Converter, which reduces the input voltage. The LM2596 cannot boost voltage.
Features
- Based on LM2596 switching regulator IC
- Adjustable output voltage
- High conversion efficiency (up to 92%)
- Wide input voltage range
- Built-in thermal shutdown protection
- Short-circuit protection
- Low ripple output
- Compact PCB design
Specifications
| Specification | Value |
|---|---|
| Product Type | DC-DC Buck Converter Module |
| Regulator IC | LM2596 |
| Converter Type | Step-Down (Buck) |
| Input Voltage | 4V – 40V DC |
| Output Voltage | 1.25V – 37V DC (Adjustable) |
| Maximum Output Current | 3A |
| Recommended Continuous Current | 2A |
| Conversion Efficiency | Up to 92% |
| Switching Frequency | 150 kHz |
| Output Ripple | <30 mV (Typical) |
| Voltage Adjustment | Multi-turn Trimmer Potentiometer |
| Operating Temperature | -40°C to +85°C |
Pin Configuration
| Terminal | Description |
|---|---|
| IN+ | Positive Input Voltage |
| IN− | Ground Input |
| OUT+ | Positive Output Voltage |
| OUT− | Ground Output |
Note: Adjust the onboard potentiometer while measuring the output voltage with a multimeter to set the desired output voltage before connecting your load.
Applications
- Arduino power supply
- ESP32 and Raspberry Pi projects
- Battery-powered devices
- LED lighting systems
- Robotics
- Automotive electronics
- CCTV power supplies
- DIY electronics
- Portable power projects
- Embedded systems
Advantages
- High efficiency
- Adjustable output voltage
- Low heat generation
- Compact size
- Easy to use
- Built-in protection features
- Cost-effective
Size
| Specification | Value |
|---|---|
| PCB Dimensions | Approx. 43 × 21 × 14 mm |
| Mounting Hole Diameter | Approx. 3 mm |
| Weight | Approx. 12 g |
Package Includes
- 1 × LM2596 Adjustable DC-DC Step-Down Converter Module
Note: The input voltage must always be higher than the desired output voltage. Do not use this module as a voltage booster. For continuous loads above 2A, additional cooling or airflow is recommended. Always verify the output voltage using a multimeter before connecting sensitive electronic devices.







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