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The XK-539 5V 3A DC-DC Buck Converter is a step-down power supply module designed to convert higher DC input voltage into a 5V output for compatible electronic devices and projects.
With a seller-advertised input range of 9V to 90V DC and a 5V output rated up to 3A, this module is suitable for applications requiring a lower-voltage DC power supply.
Its compact converter design makes it useful for embedded electronics, microcontroller projects, communication equipment and other compatible 5V-powered applications.
Model: XK-539
DC-DC step-down (Buck) converter
Advertised input voltage: 9V–90V DC
Output voltage: 5V DC
Maximum advertised output current: 3A
Calculated maximum output power: 15W
Designed for compatible 5V electronic loads
Suitable for DIY and electronic power supply projects
| Specification | Details |
|---|---|
| Model | XK-539 |
| Converter Type | DC-DC Buck (Step Down) |
| Input Voltage | 9V–90V DC (seller advertised) |
| Output Voltage | 5V DC |
| Maximum Output Current | 3A (seller advertised) |
| Calculated Output Power | Up to 15W |
| Output Type | Fixed 5V |
| Application | DC power regulation |
Arduino and microcontroller power supplies
ESP32 and compatible development projects
Sensor and communication modules
Embedded electronics
DIY DC power supply systems
Compatible automotive and battery-powered electronics
The XK-539 operates as a DC-DC step-down converter. It takes a higher DC input voltage and converts it into a lower 5V DC output.
This makes it useful when your power source provides a higher voltage than the electronic device requires.
Confirm that the input voltage is within the module's specified operating range.
Observe the correct positive and negative input connections.
Check output polarity before connecting your electronic device.
Do not exceed the rated output current.
Provide adequate ventilation during operation.
Verify the output voltage with a multimeter before connecting sensitive electronics.
Important: This is a step-down converter, not a step-up converter. It cannot increase voltage. Confirm the actual module specifications and wiring before installation.
Looking for other DC voltage conversion solutions?
Package Includes:
1 × XK-539 5V 3A DC-DC Buck Converter Module