LM2596 Step-Down Power Supply Module 7-25V to 3.3V/5V
LM2596 Step-Down Power Supply Module 7-25V to 3.3V/5V
LM2596 Adjustable Step-Down Power Supply Module
Power your electronics projects with confidence using the LM2596 DC Step-Down (Buck) Converter Module. Accepting a wide input range of 7V–25V DC and delivering stable outputs of 3.3V, 5V, or adjustable 1.25V–Vin, this compact regulated power module is engineered for smart car competitions, robotics, laboratory experiments, graduation projects, and electronics contests.
Made in Mainland China.
Why Choose This Module?
- Triple LM2596 Chipset: Utilises genuine LM2596-3.3V, LM2596-5V, and LM2596-ADJ voltage regulator chips for reliable, high-efficiency buck conversion.
- Premium Components: Features brand-new aluminium electrolytic capacitors and power inductors for long-lasting, stable performance.
- Four Self-Resetting Fuses: Each output channel is protected by a 2A self-resetting fuse — no need to replace blown fuses manually, keeping your projects safe.
- Triple Status Indicator LEDs: One per output channel. If an indicator goes out, simply disconnect power — it signals a load short circuit, preventing damage to your components.
- Gold-Plated, Oxidation-Resistant Pin Headers: Ensures reliable, corrosion-free connections over repeated use.
- Low Power Consumption: Efficient switching design keeps heat and energy waste to a minimum.
Technical Specifications
| Main Chips | LM2596-3.3V, LM2596-5V, LM2596-ADJ |
| Input Voltage | DC 7V – 25V (>1A) |
| Output Voltages | DC 3.3V | DC 5V | DC 1.25V – Vin (adjustable) |
| Fuse Rating | 2A self-resetting per channel |
| DC Input Connector | DC 5.5mm × 2.1mm barrel jack |
| Dimensions (L × W × H) | 68 × 44 × 12 mm |
| Colour | Black |
| Package | 1× Module |
Output Channel Details
- DC 3.3V Channel: 2A self-resetting fuse + indicator LED. Compatible with 3.3V microcontrollers and core boards including S08, S12, Kinetis-M4 K60/K10, DSC, and ColdFire series.
- DC 5V Channel: 2A self-resetting fuse + indicator LED. Suitable for S12 and MPC series microcontrollers and core boards.
- Adjustable Channel (DC 1.25V–Vin): 2A self-resetting fuse + indicator LED. Variable output — ideal for powering servo motors and custom voltage requirements.
Ideal Applications
- Smart car competitions & robotics tournaments
- Electronics design contests
- Arduino, STM32, and other MCU development boards
- University graduation and lab projects
- General-purpose DC voltage regulation on the bench
Note: Users may replace the self-resetting fuse and electrolytic capacitor with components better suited to their specific chip and load requirements.
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Frequently Asked Questions
Q: What input voltage range does the LM2596 step-down module support?
A: The module accepts a DC input voltage of 7V to 25V (with a current capacity greater than 1A). It is not suitable for inputs below 7V — please ensure your power source falls within this range for stable operation.
Q: Can I use this module to power Arduino or other microcontroller boards?
A: Yes. The 5V and 3.3V fixed output channels are specifically designed to power popular microcontroller families. The 5V rail suits Arduino and MPC-series boards, while the 3.3V rail is ideal for Kinetis, ColdFire, DSC, and similar 3.3V logic boards.
Q: What does it mean when one of the indicator LEDs turns off?
A: Each LED corresponds to one output channel. If a light goes out during operation, it indicates a short circuit on that channel's load. You should immediately disconnect the power supply, inspect your wiring and connected devices, and only reconnect once the fault is resolved. The self-resetting fuse will automatically restore once the overload is cleared.
Q: Is the output voltage truly adjustable on the third channel?
A: Yes. The third channel uses the LM2596-ADJ chip, allowing you to dial in an output voltage anywhere from 1.25V up to the input voltage (Vin). This makes it especially versatile for powering servo motors and other variable-voltage loads.
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.