LM2596S DC-DC Step-Down Buck Converter Module 3A Adjustable
LM2596S DC-DC Step-Down Buck Converter Module 3A Adjustable
LM2596S DC-DC Step-Down Power Supply Module — 3A Adjustable Voltage Regulator
The LM2596S Step-Down Power Supply Module is a compact, high-efficiency DC-DC buck converter designed for electronics hobbyists, engineers, and makers. With an adjustable output voltage, wide input range, and up to 92% conversion efficiency, this module is an ideal power regulation solution for DIY electronics projects, robotics, Arduino builds, and more.
Made in Mainland China.
Key Features
- Adjustable Output Voltage: Output ranges from 1.25V to 35V — dial in the exact voltage your project needs.
- High Efficiency: Conversion efficiency of up to 92%, minimizing energy waste and heat generation.
- Low Output Ripple: Output ripple of <30mV ensures a stable, clean voltage supply for sensitive electronics.
- Wide Input Voltage Range: Accepts 3.2V to 46V input, making it versatile across a broad range of power sources.
- Strong Heat Dissipation: Dense through-hole PCB design promotes excellent thermal management for sustained operation.
- High-Frequency Bypass Capacitors: Input and output capacitors enhance electromagnetic compatibility performance.
- Compact Form Factor: Dimensions of just 43×21×14mm and weighing only 21g — fits easily into tight enclosures.
Technical Specifications
| Model | LM2596S DC-DC Buck Module |
| Input Voltage | 3.2V – 46V |
| Output Voltage | 1.25V – 35V (Adjustable) |
| Output Current | 3A (Maximum) |
| Conversion Efficiency | Up to 92% |
| Output Ripple | <30mV |
| Switching Frequency | 65 KHz |
| Operating Temperature | -45°C to +85°C |
| Dimensions | 43 × 21 × 14 mm |
| Weight | 21g |
| Country of Origin | Mainland China |
Important Usage Notes
- This is a step-down (buck) module only — the input voltage must always be higher than the desired output voltage.
- For continuous output at 2A or below, no heatsink is required.
- For output currents above 2A or output power exceeding 10W during extended operation, attaching a heatsink is strongly recommended to maintain performance and longevity.
What's in the Box
- 1 × LM2596S Step-Down Power Supply Module
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Learn more: ENERGY STAR product efficiency guidance
Frequently Asked Questions
Q: What is the maximum output current of the LM2596S step-down module?
A: The LM2596S DC-DC buck converter module supports a maximum output current of 3A. For sustained operation above 2A or output power exceeding 10W, it is recommended to attach a heatsink to the module to ensure reliable long-term performance.
Q: Can I use this module to step up voltage?
A: No — this is a step-down (buck) converter only. The input voltage must always be greater than the desired output voltage. It cannot boost voltage. The input range is 3.2V–46V and the adjustable output range is 1.25V–35V.
Q: What types of projects is this DC-DC converter suitable for?
A: This LM2596S module is ideal for a wide variety of DIY electronics projects, including Arduino and Raspberry Pi power supplies, robotics, LED driver circuits, battery-powered devices, automotive electronics, and general voltage regulation applications requiring a stable, adjustable DC output.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.