Adjustable 1.5-36V DC/DC Buck Converter with LED Volt Meter

Adjustable 1.5-36V DC/DC Buck Converter with LED Volt Meter
Stock Number: 36624 PS
 Review Average:  
 Number of Reviews: 2
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Availibilty: In Stock   Units: 11

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Detailed Description

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Non Isolated, adjustable DC/DC Buck(Step Down) Converter, switching Regulator with built-in 3digit Output LED Voltmeter.
Reverse polarity protection
Input voltage: DC 4-38V
Output voltage: DC 1.25-36V
Minimum In/Out differential: 2V
Maximum current: 8A (<5A for long-term use, Add fan )
Maximum power: 200W (V x A x .95)
Conversion efficiency: 95% max
Switching Frequency: 180KHz
Operating Temperature: -45~+85?
Input voltage must be 2V higher than the output voltage
3 digit .36" LED Display
Resolution: +-0.01V <10/ 0.1 >10V
5VMin Input Volts to Board for stable Meter Operation
L: 2-1/2" W: 1-7/8" H: 1/2” WT: .1

California Proposition 65 Warning WARNING: This product can expose you to chemicals including Nickel which is known to the State of California to cause cancer and which is known to the State of California to cause birth defects and/or other reproductive harm. For more information, go to

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Generally works per specs, voltmeter not too stable
Tested unit with input 24V and output 5V at 5A (25 watts). Output slowly decreased to 4.5V as unit heated. With small fan for forced-air cooling of heat sinks, output voltage was stable at 5.00V, as measured by external meter. On-board voltmeter jumped around at random between 4.96V and 5.05V. Measured efficiency was 88%, less than the 95% spec but still pretty good.
- Bob Baker, CA
Worked after a bit
Hooked it up to 12 volts. Really 11.83 volts in and measured 11.83 out with a multi-meter. The volt meter did show 11.8. Started turning the V adjust screw both directions, many full revolutions but display did not change. Wondered if a load was needed on the output, hooked an Arduino Mega on the output. Still no joy when changing V adjust screw. With no power being applied, spun the screw many times until I heard some clicking. Also changed to a 5 volt input. Reapplied power, with no load, and saw 4.99. But I finally got a change! Spun it down to 2.65 volts. Powered down again and reconnected to 12 volts. Powered up, and it still showed 2.65 volts, but was able to get to my desired voltage around 8.5 volts. Do not know exactly what fixed it. I would buy another in the future.
- Randall, MD