XH-M404 8A DC-DC Buck Converter 4-40V with Digital Display
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Prices updated: 13 Oct 2026
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About this product
An adjustable step-down (buck) DC-DC voltage regulator module rated for up to 8A, built around the XL4016E1 regulator chip. It accepts 4V to 40V DC input and provides an adjustable output from 1.25V to 36V, with a 7-segment display to monitor the voltage.
Specifications
- Input voltage
- 4-40VDC
- Output voltage
- 1.25-36V adjustable
- Maximum output current
- 8A
- Maximum output power
- 200W
- Efficiency
- 94%
- Display
- 7-segment
- Regulator chip
- XL4016E1
Frequently asked questions
How do I set the output voltage?
Connect the input, then adjust the output while checking it with a multimeter. The listing recommends debugging with the load connected, so verify the setting under your real load.
What limits the output voltage?
As a buck converter, the output must stay below the input voltage. The input range is 4V to 40V, and the output range is listed as 1.25V to 36V.
