DC-DC Step Down Buck Converter 8A 25V to 3.3V/5V/9V/12V Module

High-Efficiency DC-DC Step Down Converter Module – 8A, 25V Input

Power your electronics projects with confidence using this compact DC-DC Buck Converter Module. Delivering up to 95% conversion efficiency with selectable output voltages of 3.3V, 5V, 9V, or 12V from a DC input of up to 25V, this board is engineered for demanding applications including drones, MCU power supplies, robotics, and low-ripple circuit requirements.

Made in Mainland China.

Key Features

• High Conversion Efficiency: Up to 95% — minimizes energy waste and heat generation
• Flexible Output Voltages: Select from 3.3V, 5V, 9V, or 12V to suit your project
• Peak Output Current: 8A (short-term) / 5A continuous — no external heatsink required at room temperature
• Ultra-Low Quiescent Current: Only 0.1mA for excellent standby efficiency
• Low Output Ripple: 500 kHz switching frequency keeps ripple minimal — ideal for sensitive circuits
• Multiple Built-In Protections: Output short-circuit protection, over-temperature protection, TVS input protection, and onboard fuse
• Wide Operating Temperature: -40°C to +85°C — suitable for industrial and outdoor environments
• Compact Form Factor: Only 7.4mm thick including heat dissipation fins — space-saving for tight enclosures
• LED Output Indicator: Onboard LED confirms active output (removable for high-power applications to reduce overhead)

Technical Specifications

Module Interface Guide

• VIN+: DC input positive pole — connect 6V to 25V DC supply
• GND: DC input negative pole — shared with output negative
• OUT+ ("+"): DC output positive pole
• GND ("-"): DC output negative pole — connected to input negative

Common Applications

• Drone & UAV power regulation
• MCU and microcontroller power supply
• Low-noise, low-ripple circuit power
• DIY electronics, Arduino, and Raspberry Pi projects
• Automotive and industrial voltage step-down applications

Heat Dissipation Note

Due to its compact design, this module has a limited heat dissipation area. For sustained high-power output, attach the back of the board directly to a metal surface or chassis to improve thermal performance. For maximum efficiency at high loads, the output LED indicator may be removed.

What's in the Box

• 1× DC-DC Step Down Converter Module (25V to 3.3V/5V/9V/12V, 8A)

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Frequently Asked Questions

Q: What input voltage range does this DC-DC step down converter module support?

A: This buck converter module accepts a DC input voltage of 6V to 25V. The input voltage must always be at least 1V higher than your selected output voltage to ensure proper regulation.

Q: Can I run this converter at 8A continuously?

A: The module can deliver 8A for short-term peak loads (e.g., drone bursts), but for continuous operation it is recommended to keep the current at or below 5A at room temperature without an external heatsink. For sustained loads above 5A, attach the back of the board to a metal surface to improve heat dissipation.

Q: What output voltages are available, and can I change them?

A: The module supports selectable output voltages of 3.3V, 5V, 9V, and 12V. The output is fixed at one of these values based on the configuration of the module — refer to your specific variant's labeling or documentation for how to select your desired output.

Q: Is this module protected against short circuits and overheating?

A: Yes. The module includes output short-circuit protection, built-in over-temperature protection, a TVS diode on the input, and an onboard fuse — making it safe and reliable for a wide range of DIY and professional electronics applications.