DC 7-100V to 5V/9V/12V/24V Mini Buck Power Module Converter

GUANDO Mini DC-DC Buck Power Module – High-Efficiency Voltage Step-Down Converter

The GUANDO Mini Buck Power Module is a compact, high-efficiency DC-DC step-down (buck) voltage regulator designed for DIY electronics projects, prototyping, and embedded systems. With a wide input range of 7V to 100V and selectable fixed output voltages of 5V, 9V, 12V, or 24V, this versatile converter handles a broad spectrum of power conversion needs — all in an ultra-small 25.5 × 16.5 × 7mm footprint. Made in Mainland China.

Key Features

• Wide Input Range: Accepts DC input from 7V up to 100V — input must always exceed the selected output voltage.
• Fixed Output Options: Choose from 5V, 9V, 12V, or 24V output to match your application requirements.
• High Conversion Efficiency: Up to 96% peak efficiency, minimizing energy waste and heat generation.
• Built-In Protection: Overheat and overload shutdown protection help safeguard your circuits and the module itself.
• Compact & Mountable Design: Motherboard half-hole design allows easy PCB mounting; ultra-small form factor fits tight spaces.
• Microelectronics Technology: Leverages advanced switching regulator design for stable, reliable power delivery.
• Easy to Install: Simple wiring and installation — ideal for beginners and experienced makers alike.

Technical Specifications

What Is a Buck (Step-Down) Converter?

A DC-DC buck converter is a switching power supply device that converts a higher input DC voltage to a lower, regulated output DC voltage. For example, it can step 24V down to 5V, or 48V down to 12V. This module uses advanced switching technology to do so with up to 96% efficiency — far superior to linear regulators that simply dissipate excess voltage as heat.

Ideal Applications

• DIY electronics and maker projects
• Raspberry Pi, Arduino, and microcontroller power supplies
• Automotive and solar power systems
• LED strip and lighting drivers
• Industrial control boards and custom PCB designs
• Robotics and drone power management

Learn more: ENERGY STAR product efficiency guidance

Frequently Asked Questions

Q: Can this DC-DC buck module output 5V from a 12V or 24V input?

A: Yes! This buck converter accepts any input from 7V to 100V DC and can step it down to a fixed 5V output. It is ideal for powering USB devices, microcontrollers, or 5V logic boards from higher-voltage sources like 12V car batteries or 24V industrial supplies.

Q: What is the maximum continuous output current for the GUANDO buck module?

A: The module supports up to 3A peak output current. For stable, long-term use, it is recommended to keep continuous current within 2A to maintain performance and module longevity.

Q: Does this voltage regulator have any built-in protection features?

A: Yes, the module includes built-in overheat and overload shutdown protection, which automatically cuts off the output if the module exceeds safe operating temperatures or current limits, helping protect both the module and connected components.

Q: Can I mount this mini buck board directly onto a PCB?

A: Absolutely. The module features a motherboard half-hole (castellated hole) design, which makes it easy to solder directly onto a custom PCB for permanent, space-saving installation.

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.