10 Pack 3 Pins AMS1117-3.3 DC 4.75V-12V to 3.3V Voltage Regulator
4.1Editor score
Simple dual-panel design
Overheat protection circuit
Easy MCU connection
In this guide
Finding the right power supply is crucial for any electronic project. A reliable 5V to 3V voltage regulator ensures your microcontrollers and sensors receive stable power without damage or performance issues.
We analyzed ten top-rated modules based on user feedback, technical specifications, and build quality. Our comparison covers linear and switching regulators to help you match the right type to your specific application needs.
Each selection highlights key features like current capacity, size, and protection mechanisms. Prices and availability may change over time, so please verify details on the product pages before making your final purchase decision.
Top 3 Picks for Best 5V to 3V Voltage Regulator
5pcs 3.3V Buck Converter Module DC 4.5-24V to 3.3V Voltage Regulator
4.6Editor score
Wide input voltage range
Low ripple output stable
Compact space-saving design
3.3V Regulator 5pcs Mini Reducer DC 5-30V 5V 12V 24V Buck to 3.3V Buck Converter Board 1.8A Output Mini360 Small Size Power Module (3.3, Volts)
5.0Editor score
High current output
Miniaturized PCB footprint
Advanced switching frequency
Top 10 Best 5V to 3V Voltage Regulator in 2026 Compared
The following table provides a side-by-side overview of all ten selected voltage regulator modules. Compare input ranges, output currents, and physical dimensions to find the unit that fits your project constraints.
ProductsSpecificationsEditor scorePrice
Editor's Choice
5pcs 3.3V Buck Converter Module DC 4.5-24V to 3.3V Voltage Regulator
Input 4.5V to 24V
Output 3.3V fixed
Max current 1.8A
Size 17.5x12x4.5mm
4.6Editor score
Editor's Choice
10 Pack 3 Pins AMS1117-3.3 DC 4.75V-12V to 3.3V Voltage Regulator
Input 4.75V to 12V
Output 3.3V fixed
Max current 0.8A
3 Pin design
4.1Editor score
Best Premium
5PCS DC-DC Step Down/Step Up Converter 1.8V-5V to 3.3V, 100mA Max Current
Input 1.8V to 5V
Output 3.3V fixed
Max current 100mA
Step up and down
5.0Editor score
3.3V Regulator 5pcs Mini Reducer DC 5-30V 5V 12V 24V Buck to 3.3V Buck Converter Board 1.8A Output Mini360 Small Size Power Module (3.3, Volts)
Input 4.5V to 24V
Output 3.3V fixed
Max current 1.5A
Size 17.5×12.3×4.3mm
5.0Editor score
Dorhea 7 Pack 3.3V DC-DC Buck Converter 3 Pins AMS1117-3.3V DC 4.75V-12V to 3.3V Voltage Regulator Step Down Power Supply 800mA Buck Module
Input 4.75V to 12V
Output 3.3V fixed
Max current 0.8A
Overheat protection
4.2Editor score
AMS1117-3.3 DC 4.75V-12V to DC 3.3V Voltage Regulator 15pcs
Input 4.75V to 12V
Output 3.3V fixed
Max current 0.8A
±2% accuracy
5.0Editor score
5PCS 3.3V Mini Buck Converter Board Regulator – 5-30V to 3.3V, 1.8A Output, Small PCB Board Power Buck Module, Black
Input 5V to 30V
Output 3.3V fixed
Max current 1.8A
Size 0.67×0.24×0.16in
3.4Editor score
5pcs 3.3V DC-DC Buck Converter, 4.5V-30V to 3.3V Step Down Regulator
Input 4.5V to 30V
Output 3.3V fixed
Max current 1.8A peak
Compact size
10PCS 5V to 3.3V DC-DC Step Down Power Supply Buck Module AMS1117 800MA Automatic Adjustable Boost Board Start Limit Voltage
Input 4.5V to 7V
Output 3.3V fixed
Max current 0.8A
Automatic adjustment
5.0Editor score
3.3V Regulator 6pcs Mini Reducer DC 4.75-23V 5V 12V Buck to 3.3V Buck Converter Board 1.8A Output Mini360 Small Size Aircraft Model MP1584EN Power Module(3.3 Volts)
Input 4.5V to 24V
Output 3.3V fixed
Max current 1.8A
Size 17x11x3.6mm
4.9Editor score
1. 5pcs 3.3V Buck Converter Module DC 4.5-24V to 3.3V Voltage Regulator – Best Overall 5V to 3V Voltage Regulator
5pcs 3.3V Buck Converter Module DC 4.5-24V to 3.3V Voltage Regulator
Input 4.5V to 24V
Output 3.3V fixed
Max current 1.8A
Size 17.5x12x4.5mm
This buck converter module stands out as the top pick for its balance of performance and versatility. With a rating of 4.6, it offers stable output power across a wide input voltage range suitable for many power supplies. The compact footprint makes it ideal for embedded projects where space is at a premium.
Pros
- Wide input voltage range
- Low ripple output stable
- Compact space-saving design
- Excellent value for 5 pack
- Stable switching frequency
Cons
- Inductive loads need protection
- Small size can be hard to solder
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The unit delivers up to 1.8A with a ripple of less than 30mV ensuring clean power for sensitive components like microcontrollers and sensors. Its switching frequency between 1MHz and 1.5MHz contributes to efficient power conversion with minimal heat generation under typical loads.
While it requires additional protection diodes for inductive loads like motors the general utility remains high. Users should note the physical size is extremely small which might challenge those with limited soldering experience working on tight circuit boards.
Buyers seeking a reliable power solution for multiple circuits will find this 5 pack highly cost effective. It is recommended for hobbyists and professionals needing consistent 3.3V rails from 5V or higher sources without complex wiring.
Efficient Power Conversion
The switching regulator design ensures high efficiency reducing heat buildup compared to linear alternatives during extended operation cycles.
Versatile Input Compatibility
Accepting inputs from 4.5V to 24V allows seamless integration with common 5V 9V 12V and 24V power sources.
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2. 10 Pack 3 Pins AMS1117-3.3 DC 4.75V-12V to 3.3V Voltage Regulator – Best Budget 5V to 3V Voltage Regulator
10 Pack 3 Pins AMS1117-3.3 DC 4.75V-12V to 3.3V Voltage Regulator
Input 4.75V to 12V
Output 3.3V fixed
Max current 0.8A
3 Pin design
This AMS1117-3.3 pack provides an affordable linear voltage regulation solution for small electronic projects. With a 4.1 rating it serves well for devices requiring up to 0.8A of current from a 4.75V to 12V input source. The straightforward design makes it accessible for beginners.
Pros
- Low cost per unit
- Simple dual-panel design
- Overheat protection circuit
- Easy MCU connection
- Wide range of applications
Cons
- Lower current capacity than buck modules
- Linear regulator efficiency is lower
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The dual-panel layout with 2 pin single row pins simplifies connections to microcontrollers like Arduino and STM32 boards. It includes built-in overheat shutdown protection to prevent damage during overload or excessive temperature conditions during operation.
While it is not as efficient as switching regulators for high current needs it remains reliable for low power tasks. Users should avoid exceeding the 0.8A limit as stated in the product description to ensure longevity and stable performance.
For prototyping or large scale production of simple circuits this 10 pack offers significant savings. It is best suited for applications where heat dissipation is manageable and input voltage stays within the recommended range.
Simple Pin Configuration
The 3 pin setup allows quick soldering and integration into breadboards without complex wiring requirements or external components.
Thermal Protection Features
Integrated overheat shutdown circuits safeguard the chip and connected devices when operating conditions exceed safe temperature limits.
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3. 3.3V Regulator 5pcs Mini Reducer DC 5-30V 5V 12V 24V Buck to 3.3V Buck Converter Board 1.8A Output Mini360 Small Size Power Module (3.3, Volts) – Best Premium 5V to 3V Voltage Regulator
3.3V Regulator 5pcs Mini Reducer DC 5-30V 5V 12V 24V Buck to 3.3V Buck Converter Board 1.8A Output Mini360 Small Size Power Module (3.3, Volts)
Input 4.5V to 24V
Output 3.3V fixed
Max current 1.5A
Size 17.5×12.3×4.3mm
This Mini360 power module earns its premium status with a perfect 5.0 rating and robust performance features. It supports input voltages up to 24V and delivers up to 1.5A reliably making it suitable for demanding electronics tasks. The size remains remarkably small at 17.5×12.3×4.3mm.
Pros
- High current output
- Miniaturized PCB footprint
- Advanced switching frequency
- Excellent stability and ripple
- Wide input voltage range
Cons
- Requires protection for inductive loads
- Premium price point
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Output ripple stays under 30mV due to its high switching frequency of typically 1MHz which ensures clean power for sensitive components. The design is optimized for space constrained environments while maintaining high efficiency during power conversion processes.
Like other buck modules care must be taken when driving inductive loads such as motors to avoid current spikes. Adding Zener diodes or capacitors as recommended helps protect downstream circuitry from potential damage during operation.
Users prioritizing reliability and performance will appreciate the build quality and consistent voltage regulation. It is highly recommended for professional prototypes and portable devices where space and efficiency are critical considerations.
High Current Delivery
Capable of supplying up to 1.5A this module handles larger loads than standard linear regulators without overheating quickly.
Compact PCB Design
The tiny form factor fits easily into tight enclosures and custom PCB layouts without consuming valuable board real estate.
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4. 5PCS DC-DC Step Down/Step Up Converter – Best for Low Power Applications
5PCS DC-DC Step Down/Step Up Converter 1.8V-5V to 3.3V, 100mA Max Current
Input 1.8V to 5V
Output 3.3V fixed
Max current 100mA
Step up and down
This converter shines for battery powered applications where input voltage varies below or above the target 3.3V output. With a 5.0 rating it efficiently steps voltage up or down depending on input conditions ensuring consistent power to microcontrollers. It supports input from 1.8V to 5V.
Pros
- Step up and down capability
- Low input voltage support
- Perfect for single cell batteries
- Stable 3.3V output
- 5 Pack value
Cons
- Limited to 100mA current
- Higher cost per unit
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Ideal for single cell lithium ion or alkaline battery setups this module maintains a stable output even as battery voltage drops over time. The 100mA current limit is sufficient for low power sensors and logic circuits but not for high draw peripherals.
While it lacks high current capacity its ability to boost voltage makes it unique among 3.3V solutions. Users should ensure loads stay within the 100mA limit to prevent potential drops or regulator stress during peak demand periods.
Buyers focused on portable or battery operated devices will find this module indispensable. It offers a reliable solution for maintaining logic levels when using power sources that do not naturally match 3.3V requirements.
Battery Compatibility
Supports input starting from 1.8V making it perfect for single cell battery projects that need steady 3.3V logic.
Stable Output Regulation
Delivers consistent 3.3V output regardless of input fluctuations ensuring reliable operation for sensitive digital components.
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5. Dorhea 7 Pack – Best for Small Projects
Dorhea 7 Pack 3.3V DC-DC Buck Converter 3 Pins AMS1117-3.3V DC 4.75V-12V to 3.3V Voltage Regulator Step Down Power Supply 800mA Buck Module
Input 4.75V to 12V
Output 3.3V fixed
Max current 0.8A
Overheat protection
This AMS1117 variant delivers reliable power for standard electronic devices needing 3.3V rails. With a 4.2 rating it simplifies circuit design with a 3 pin layout that connects easily to MCUs. The module supports inputs from 4.75V to 12V for broad compatibility.
Pros
- Easy 3 pin connection
- Consistent voltage supply
- Built-in protection features
- Affordable pack price
- Fits standard PCB layouts
Cons
- Limited current to 0.8A
- Linear efficiency lower than switching
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The design prioritizes stability providing constant power supply for sensors and logic boards. Overheat protection is built into the chip to safeguard against thermal issues during prolonged usage or unexpected overloads in the circuit.
While it cannot match the efficiency of buck converters it remains a solid choice for low current applications. Users should remember that exceeding 0.8A may cause performance degradation or failure of the regulator component.
It is well suited for hobbyists needing multiple units for different projects. The 7 pack ensures you always have spare regulators on hand for prototyping or repairs without extra shipping costs.
User Friendly Design
The 3 pin interface reduces wiring complexity and allows direct soldering onto standard development boards quickly.
Thermal Safety Mechanism
Overheat shutdown protection prevents chip damage when temperatures rise beyond safe operating limits during use.
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6. AMS1117-3.3 15pcs Pack – Best Bulk Value
AMS1117-3.3 DC 4.75V-12V to DC 3.3V Voltage Regulator 15pcs
Input 4.75V to 12V
Output 3.3V fixed
Max current 0.8A
±2% accuracy
This 15 piece pack offers excellent quantity for workshops or classroom projects where multiple power modules are needed. It maintains high accuracy of ±2% on 3.3V output ensuring precise voltage for sensitive logic circuits. Built-in protections support reliable operation.
Pros
- 15 piece bulk value
- High accuracy output voltage
- Overheat protection
- Wide temperature range
- Versatile for portable use
Cons
- Not suitable for high current
- Requires heatsinking under full load
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Features include overcurrent and overheat protection allowing operation across a wide temperature range of -40C to 125C. This makes it suitable for industrial or automotive environments where ambient temperatures can vary significantly during device operation.
While efficient for low loads it dissipates heat linearly so a heatsink might be necessary if running near 0.8A continuously. Users should account for thermal dissipation when designing enclosures or mounting points for these components.
For bulk needs this pack provides a cost effective solution for standard 3.3V power conversion. It is highly recommended for educational settings or businesses needing reliable regulators for many devices.
High Accuracy Voltage
The ±2% voltage accuracy ensures precise power rails for devices requiring exact logic levels for reliable operation.
Wide Temperature Range
Operating from -40C to 125C makes this regulator suitable for diverse environmental conditions beyond standard indoor use.
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7. 5PCS Mini Buck Converter Board – Best for High Current
5PCS 3.3V Mini Buck Converter Board Regulator – 5-30V to 3.3V, 1.8A Output, Small PCB Board Power Buck Module, Black
Input 5V to 30V
Output 3.3V fixed
Max current 1.8A
Size 0.67×0.24×0.16in
This buck converter supports up to 1.8A making it strong for powering multiple devices from a single source. It accepts inputs from 5V to 30V offering flexibility for various power supply configurations. The PCB includes reverse polarity protection to prevent accidental damage.
Pros
- High 1.8A current output
- Wide 5V to 30V input
- Reverse polarity protection
- Compact PCB footprint
- Low output ripple
Cons
- Lower user rating compared to peers
- Small size may complicate soldering
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Despite its compact size it maintains low ripple output under 30mV ensuring clean power for logic circuits. The switching frequency of 1.5MHz provides efficient performance and minimal heat generation under typical load conditions.
The lower rating suggests some quality variance among units so testing upon arrival is recommended. Users should be prepared for the tiny dimensions which might challenge soldering without a steady hand or magnification tools.
Ideal for applications needing high current and small form factor this module is a functional choice. It is best for projects prioritizing output capability and space efficiency over brand recognition or high end build consistency.
High Output Current
Delivering up to 1.8A this module supports multiple loads without voltage drop under normal operating conditions.
Reverse Polarity Safety
Built-in marks and circuitry help prevent damage from incorrect wiring connections during setup and debugging.
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8. 5pcs 3.3V DC-DC Buck Converter – Best for Vehicle Power
5pcs 3.3V DC-DC Buck Converter, 4.5V-30V to 3.3V Step Down Regulator
Input 4.5V to 30V
Output 3.3V fixed
Max current 1.8A peak
Compact size
This module is designed for versatility with a 30V input range suitable for automotive and solar power systems. It provides stable 3.3V output up to 1.8A peak ideal for powering Raspberry Pi and ESP32 devices directly from 12V supplies. Pre-testing ensures readiness.
Pros
- Wide 30V input range
- Suitable for vehicle use
- Works with solar panels
- Compact 17.5x12x4.3mm
- Pre-tested before shipping
Cons
- No user rating available
- Input range requires proper wiring
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Its ultra-compact size fits wearables and tight PCB layouts easily. The low ripple output under 30mV protects sensitive electronics from noise common in vehicle electrical systems. It simplifies connecting 5V LED strips to higher voltage batteries.
Due to the lack of user feedback verification on arrival is advised before full scale deployment. Users should ensure wiring handles 30V safely and consider heat dissipation if running peak current for extended periods.
Best for mobile or outdoor electronics this regulator offers robust performance. It is recommended for makers needing to interface with car batteries or portable solar setups without custom circuitry.
Automotive Compatibility
Supporting inputs up to 30V allows direct use with 12V and 24V vehicle batteries without extra conversion.
Clean Power Output
Low ripple ensures stable operation for microcontrollers and sensors despite noisy input environments like cars.
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9. 10PCS AMS1117 Buck Module – Best for Simple Circuits
10PCS 5V to 3.3V DC-DC Step Down Power Supply Buck Module AMS1117 800MA Automatic Adjustable Boost Board Start Limit Voltage
Input 4.5V to 7V
Output 3.3V fixed
Max current 0.8A
Automatic adjustment
This 10 piece set uses the trusted AMS1117 architecture for reliable power conversion. It supports inputs up to 7V making it perfect for 5V logic boards like Arduino UNO. Each unit provides 3.3V fixed output up to 0.8A for connected peripherals.
Pros
- 10 Pack quantity value
- Automatic voltage adjustment
- Start limit voltage protection
- Standard AMS1117 base
- Ideal for Arduino power
Cons
- Input limited to 7V max
- Requires heatsinking at full load
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Automatic adjustment features help stabilize output when input varies slightly reducing risk of component failure. The start limit voltage protection guards against under voltage conditions during system initialization or power up sequences.
Since it is a linear regulator heat can build up at full load so a small heatsink is suggested. Users should not exceed the 0.8A current limit to maintain stability and prolong module lifespan.
Excellent for bulk prototyping this pack offers value for classrooms and labs. It simplifies powering 3.3V devices from standard USB or 5V barrel jack sources efficiently.
Automatic Adjustment
The module adjusts impedance to maintain stable output when load or input conditions fluctuate during operation.
Start Limit Protection
Built-in limits prevent damage from sudden power spikes or under voltage during startup phases of projects.
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10. 3.3V Regulator 6pcs Mini Reducer – Best for Aircraft
3.3V Regulator 6pcs Mini Reducer DC 4.75-23V 5V 12V Buck to 3.3V Buck Converter Board 1.8A Output Mini360 Small Size Aircraft Model MP1584EN Power Module(3.3 Volts)
Input 4.5V to 24V
Output 3.3V fixed
Max current 1.8A
Size 17x11x3.6mm
This MP1584EN module delivers high performance in a tiny footprint making it ideal for drones and aircraft models. With a 4.9 rating it provides 1.8A output from 4.5V to 24V inputs. The small size fits constrained spaces easily.
Pros
- Extremely small size
- High 1.8A output
- Low output ripple
- Perfect for models
- Excellent 4.9 rating
Cons
- Inductive loads need care
- Soldering small pads is hard
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Output ripple is under 30mV ensuring clean power for flight controllers and servos. Its compact footprint helps reduce weight in aerodynamic builds. However inductive loads like motors require external protection to avoid damaging sensitive chips.
Users should note the soldering pads are small which may require fine tips or magnification for connection. Ensuring proper heat sinking during high current use will maintain efficiency and prevent thermal shutdown.
For hobbyists and modelers this regulator is a top choice for weight and efficiency. It balances high current needs with compact design better than larger modules.
Space Efficiency
The 17x11x3.6mm dimensions save critical space in small drones or portable electronics.
High Efficiency
Efficient power conversion minimizes heat buildup which is vital for battery powered portable systems.
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Buying Guide – How to Choose the Best 5V to 3V Voltage Regulator
Selecting the right voltage regulator depends on your specific power needs physical constraints and environment. Below are the most important factors to evaluate.
Input Voltage Range
Ensure the module accepts the maximum voltage from your power source. Most modules listed support 5V to 12V or 5V to 30V ranges allowing flexibility with different battery packs or adapters. Check the minimum input to ensure stable operation during battery discharge.
Always choose a regulator with a safe margin above your source voltage to avoid instability or damage during voltage spikes.
Output Current Capacity
Match the maximum output current to the total demand of your connected components. Some linear modules provide 0.8A while buck converters can deliver up to 1.8A. Exceeding this limit causes voltage drops or overheating that can permanently damage the chip.
Calculate your total current draw and select a unit with at least 20% headroom for safety and reliability.
Regulator Type
Linear regulators like AMS1117 are simple and produce less electrical noise but are less efficient and generate more heat. Buck converters use switching technology which is more efficient for larger voltage drops but may introduce ripple that needs filtering.
Use linear for sensitive analog circuits and switching for high efficiency battery powered projects.
Physical Size and Mounting
Compact modules fit better in wearable or portable devices but may be harder to solder without specialized tools. Consider the PCB footprint and available space in your enclosure. Some models include soldering pads or headers for easier connections.
Pick a size that balances space constraints with ease of assembly and thermal dissipation needs.
Thermal Management
Modules dissipate heat differently based on efficiency and current load. Buck converters run cooler at high voltage drops than linear types. For continuous high current use ensure you have airflow or a heatsink to prevent thermal shutdown.
Prioritize modules with built-in thermal protection to safeguard your project during prolonged operation.
Protection Features
Look for built-in features such as overheat overcurrent and reverse polarity protection. These prevent damage when wiring mistakes occur or unexpected electrical spikes happen. Some models also include short circuit protection for added safety.
Always choose a unit with at least thermal protection to ensure longevity and safe operation.
Package Quantity and Cost
Buying in packs of 5 or 10 often reduces the cost per unit significantly. This is useful for prototyping or deploying multiple units across different projects. Ensure all units meet the same quality standards and come from a reputable seller.
Balance bulk savings with your actual usage to avoid waste on unused components.
Compatibility with Protocols
Confirm the regulator output matches the logic level of your microcontroller or sensor. While many support 3.3V logic devices like ESP32 or STM32 check if your device tolerates the specific voltage tolerance. Some components require stricter voltage accuracy.
Select a module with low ripple and high accuracy for sensitive communication interfaces.
How to Use and Care for Your 5V to 3V Voltage Regulator
Connect the input voltage to the correct terminals ensuring polarity is correct. Use insulated wires sized for your expected current to prevent voltage drops or melting.
Mount the module securely on a non-conductive surface to allow airflow. If using high current add a heatsink or fan to maintain safe operating temperatures during long sessions.
Test output voltage with a multimeter before connecting sensitive electronics. This ensures the regulator provides stable 3.3V without unexpected spikes that could harm your circuit.
Frequently Asked Questions
Can I use a 5V to 3V regulator with a 9V power supply?
Yes most modules in this guide support inputs up to 12V or 24V. Always verify the maximum input voltage rating of your specific module to avoid damage. The regulator will step the voltage down to 3.3V safely.
What is the difference between linear and buck regulators?
Linear regulators are simple but less efficient generating heat during voltage conversion. Buck converters use switching technology to reduce waste heat which improves efficiency especially for higher voltage drops. Buck is better for battery powered devices.
Why is heat protection important in a regulator?
Protection circuits shut down the module if it overheats due to high current or ambient temperatures. This prevents permanent damage to the chip and connected components. Always ensure airflow or cooling when operating near max capacity.
Can I use this regulator for motors or servos?
Not directly. Inductive loads like motors can cause voltage spikes that damage regulators. You must add protection diodes or capacitors to smooth out current changes. Always isolate sensitive logic circuits from heavy loads.
What if my device needs more than 1.8A?
These modules are limited to around 1.8A max. For higher current you will need multiple units in parallel or a larger regulator designed for more power. Check the datasheet for specific limits to avoid overload.
How do I choose the right pack size?
Buying larger packs reduces cost per unit but you should consider how many you actually need. For prototyping 5 to 10 units are usually enough to cover most experiments and backups. Ensure storage is dry to avoid corrosion.
Are these modules suitable for outdoor use?
Yes if they are properly protected from moisture and dust. Check the operating temperature range to ensure it fits your climate. Always enclose the regulator in a sealed project box for environmental safety.
Do I need external capacitors for these regulators?
Many modules include onboard capacitors but adding extra ones near input and output pins improves stability. It filters high frequency noise and helps maintain smooth voltage. Follow the product manual for specific capacitor recommendations.
Final Thoughts on Choosing the Best 5V to 3V Voltage Regulator
The top picks offer a range of solutions from compact buck converters for space limited projects to high current modules for robust builds. Each module provides reliable 3.3V output for powering modern electronics safely.
Prioritize current capacity and thermal management based on your application. If efficiency is critical choose switching regulators while linear types suit low noise needs. Ensure physical size fits your design constraints for ease of use.
Prices and availability may vary so check product pages for the latest details before purchasing. With the right regulator your electronics will run smoothly and safely for years to come.