Step Down Buck Converters of 2025
Best Choice1
DROKDROK DC Buck Converter Adjustable Voltage Regulator 12V 6V-32V to 1.5-32V 5A, LCD Screen Step Down Converter with USB Port and Protective Case
9.3 Easy installation9.1 Easy to build8.9 worth the moneyWhy we love it
Versatile for various DIY and monitoring applications.
Large clear digital display for voltage and current.
Multiple safety features for reliable operation.
9.7Exceptional
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Value for Money2
Valefod[2 Pack] DC-DC 5A Buck Converter 4-38V to 1.25-36V Step-Down Voltage Regulator High Power Module with LED Display
Main highlights- 【Output Voltage】DC 1.25V to 36V voltage is continuously adjustable, maximum output current is 5A.
- 【Mini Size】62*38*14 mm (with potentiometer). 2 sets included.
- 【Input Voltage】DC 4V to 38V (input voltage must be 1.5V higher than the output voltage, no boost).
- 【High Precision】The buck converter consists of 36u thickened circuit boards, high-Q inductance with output LED indicator, and superior solid-state capacitors that can effectively filter out high frequency noise. Suitable for various electronic projects.
- 【Easy to DIY】Connect to power source, using a mini screwdriver to increase or decrease output voltage by adjusting the screw on the blue potentiometer and monitor voltage with multimeter to get the needed voltage, clockwise to step up voltage and counterclockwise to step-down voltage. (Factory default stays a high voltage, you need to contrarotate about 7-15 circles before the voltage starts ramping down, 1 circle means +/- 1V)
9.6Exceptional
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3
HiLetgoHiLetgo 2pcs LM2596 Adjustable DC-DC Step Down Buck Power Convert Module 4.0-40V Input to 1.25-37V Output with LED Voltmeter Display
Main highlights- output voltage range of 1.25V ~ 37V
- LM2596 DC-DC Buck Step-down Power Converter Module
- 4.0-40V to 1.25-37V LED Voltmeter
9.5Excellent
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4
BULVACKBULVACK 10 Pack LM2596 DC-DC Buck Converter Step Down Module Power Supply DIP Output 1.25V-30V 3A
Main highlights- Output: 1.25V to 30V DC voltage is continuously adjustable, high efficiency and maximum output current of 3A.
- Input voltage range: DC 3.2V to 35V (input voltage must be higher than the voltage output to 1.5V or more can not be boosted.)
- High-Q inductors with high power output LED indicator
- All solid capacitors using SANYO
- 36u thick circuit boards
9.4Excellent
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5
DROK33% OffDROK Waterproof DC Buck Converter Voltage Regulator 8-22V to 3-15V 5V 12V 3A Adjustable Output Power Supply Transformer Step-Down Volt Module Board for Car Auto Vehicle Motor Regulated SR
9.5 Easy installation9.1 Simple to use8.7 worth the moneyWhy we love it
High efficiency: Synchronous rectification technology
Precise settings: Potentiometer adjust accuracy
Durable design: Waterproof, anti shock, anti humidity, dust proof.
9.2Excellent
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6
HOMELYLIFEDC 24V to DC 12V 10A 120W Step Down Buck Converter Voltage Regulator Reducer Power Converter Mini Module 12V Transformer
9.9 Sheerness9.9 lasts a long time9.7 Easy installationWhy we love it
Stable 12V output
High conversion efficiency
Multi protection feature
9.1Excellent
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7
SelokySeloky 5 Pack LM2596 DC to DC Buck Converter 3.0-40V to 1.5-35V Adjustable Voltage Regulator Electronic Voltage Stabilizer Power Supply Step Down Module
Main highlights- Wide Input Voltage Range: The LM2596 buck converter supports a broad input voltage range from 3V to 40V, making it ideal for various applications, including DIY electronics, solar power systems, and more.(Input voltage must be at least 1.5V higher than the output voltage; no boost function)
- Space-Saving & Robust Build: The LM2596 dc to dc buck converter boasts a compact and sturdy PCB design, allowing seamless integration into small spaces in your projects while maintaining reliable performance.
- Integrated Thermal Protection: Built-in thermal shutdown and current limit protection safeguard your devices from overheating and overload, extending the lifespan of your components.
- High-Efficiency Output: Achieve up to 92% conversion efficiency with this step-down regulator, ensuring stable and efficient voltage regulation for your devices, from 1.25V to 35V.
- Features: Built with SANYO solid capacitors, 36μ thick PCB, high-Q inductors, and an LED output indicator for enhanced performance and reliability.
- Application: Perfect for DIY power bank projects, powering monitors, communication devices, and a wide range of other electronic equipment.
- Adjustable Voltage Regulator: Easily customize the output voltage with a precision multi-turn potentiometer, providing flexibility for powering a wide range of electronic projects and devices.
8.9Very Good
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8
DROKDROK DC 5V Power Converter, 5pcs Mini Voltage Buck Regulator DC 4.5-20V 12V 9V Step Down to 5V Reducer Transformer Board 3A 10W Adjustable Fixed Volt Output Step-Down Power Supply Stabilize
Main highlights- Protection and Enable Control --- Output short circuit protection, but please do not keep short circuit for a long time. The integrated enable port defaults the working mode and it will be off when it is at low electric level off, which bring a great convenience for users.
- Parameter --- For DROK mini buck converter, Input voltage: DC 4.5-20V; Output voltage can be adjustable or fixed. Adjustable range: 1-16V; Fixed voltage: 1.8V, 2.5V, 3.3V, 5V, 9V, 12V; Output current: Max 3A (peak: 3A, long-term: within 2A); Power: 10W.
- Output Voltage Adjustable or Fixable --- These tiny 12v to 5v step down converters can be variable at output voltage. The small board is default to be used for output voltage adjustment. If you want to get fixed voltage output, you need to cut off the Pad A by using a sharp thing such as a knife then weld together the port of the fixed voltage you want.
- NOTE --- This mini buck converter is really very tiny, much smaller than a 1-dollar coin, nearly a half of the coin.
- High Efficiency --- Conversion efficiency: Up to 97% (typical value: >90% when step down 12V to 5V 2A).
8.8Very Good
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9
SelokySeloky LM2596 Adjustable DC-DC Step-Down Buck Converter Module with LED Voltmeter Display, Voltage Regulator 4.0-40V Input to 1.25-37V Output Power Supply Module (Pack of 2)
Main highlights- LM2596 Adjustable Buck Converter: The internal oscillation frequency is 150KHz. It's a second-generation voltage regulator with low power consumption and high efficiency. It's equipped with high-quality solid capacitors to improve the stability and durability of the circuit and filter out high-frequency noise effectively
- LED Numeric Display: Buck converter equipped with an LED voltmeter display. The voltmeter has a measurement error of ±0.1V. The input voltage range is from 4.0V to 40V, and the output voltage range is from 1.25V to 37V(Note: If the input voltage is below 4V, the onboard voltmeter will not operate and no display will be shown). The voltmeter can be switched off by holding the switch for over 1 second and less than 4 seconds, then releasing it. Once the voltmeter is off, just press the switch briefly to turn it on
- Features & Safety: The input side of the LM2596 buck converter is protected by two diodes. If you connect it backwards, it won't damage the module. It also has overheat and short-circuit protection. (For power over 15W, make sure to improve heat dissipation)
- Ease of Use: LM2596 adjustable buck converter can easily adjust the output voltage with a mini screwdriver. It comes with terminal blocks for quick connections, so you don't need to solder if you don't want to
- Applications: The LM2596 buck converter works great in lots of different situations, like car power supplies, DIY projects, and industrial equipment. It's perfect for both pros and beginners
8.7Very Good
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10
MakerFocusMakerFocus 2pcs LM2596 Adjustable DC Step Down Buck Power Converter, 4-40V Input to 1.25-37V Output Voltage Regulator with LED Voltmeter Display for DIY
Main highlights- Solderable Power Cord: The soldering wire connection point is retained on the board, so you can choose whether to solder the power cord according to your needs; If not necessary, you can also connect the power cord to the terminal block
- Practical DC-DC Buck Converter: Step down power converter can lower the voltage. Input voltage range 4.0-40V, output voltage range 1.25-37V; output current 2A, output power 15W, operating frequency: 150KHZ. If the output voltage does not match the electrical equipment, you can manually adjust the output voltage
- Note: When the output voltage cannot be adjusted and is always equal to the input voltage, please turn the potentiometer counterclockwise for more than 10 turns before you can use the module normally. This is because the default output voltage is 20V when it leaves the factory
- LED Display: Buck converter has the function of displaying voltage and can accurately measure the voltage value. If you need to switch the display of input or output voltage, just press the button on the right; if you want to turn off the digital display, please press the button on the left
- How to Use: Connect the power adapter to the input terminal of the buck converter and check the output voltage. If the output voltage does not match the electrical equipment, use a screwdriver to twist the potentiometer. Clockwise rotation increases the voltage, counterclockwise rotation decreases the voltage. After confirming that the output voltage is OK, connect the electrical device to the output terminal
8.5Good
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