DC-DC Step Down Converter 3A LM2596S 4-38Vdc to 1.5-35Vdc DC100
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Prices updated: 13 Oct 2026
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About this product
An adjustable step-down (buck) DC-DC converter module built around the LM2596S regulator IC, rated at 3A. It accepts a 4 to 38Vdc input and gives an adjustable 1.5 to 35Vdc output, commonly used to power 5V, 9V or 12V circuits from a higher-voltage source. Set the output with a multimeter before connecting sensitive electronics.
Specifications
- Input voltage
- 4~38Vdc
- Output voltage
- 1.5~35Vdc
- Output current
- 3A
- IC
- LM2596S
- Converter type
- Step-down (buck)
- Adjustable output
- Yes
Frequently asked questions
How do I set the output to 9V?
Connect a multimeter to the output, power the module from a source higher than 9V within the 4 to 38Vdc input range, and turn the adjustment until the meter reads 9V before connecting the load.
Can I use it to run a 5V device from a 12V battery?
Yes. A 12V battery is within the input range, so set the output to 5V with a multimeter and keep the device's current draw within the 3A rating.
