10 Pack 3 Pins AMS1117-3.3 DC 4.75V-12V to 3.3V Voltage Regulator
4.1Editor score
Low cost multi-pack value
Simple 3-pin design
0.8A current capacity
In this guide
Finding a reliable 5V to 3V voltage regulator is crucial for powering sensitive electronics like microcontrollers and sensors. A good regulator ensures stable output, protects your components from voltage spikes, and maintains efficiency across various input conditions.
We evaluated ten top-rated voltage regulator modules based on user feedback, technical specifications, and real-world performance. Our comparison covers buck converters and linear regulators, highlighting their input ranges, current capacities, and ease of integration into DIY and professional circuits.
Each selection in this list offers distinct advantages for different project needs, from compact designs to high-current outputs. Please note that pricing and availability may fluctuate over time, so check current listings before making your final purchasing 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
4.5V to 24V input range
Stable 3.3V output voltage
1.8A maximum current output
5pcs 3.3V DC-DC Buck Converter, 4.5V-30V to 3.3V Step Down Regulator
4.8Editor score
Wide 4.5V to 30V input
Ultra compact size design
Low ripple clean power
Top 10 Best 5V to 3V Voltage Regulator in 2026 Compared
The following table provides a side-by-side comparison of all ten voltage regulator modules selected for this guide. It highlights key specifications such as input voltage ranges, output current limits, and physical dimensions to help you quickly identify the best fit for your specific application.
ProductsSpecificationsEditor scorePrice
Editor's Choice
5pcs 3.3V Buck Converter Module
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 AMS1117-3.3
Input 4.75V to 12V
Output 3.3V fixed
Max Current 0.8A
Type Linear Regulator
4.1Editor score
Best Premium
5PCS DC-DC Step Down/Step Up
Input 1.8V to 5V
Output 3.3V fixed
Max Current 100mA
Type Boost/Buck Hybrid
5.0Editor score
3.3V Regulator 5pcs Mini Reducer
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
Input 4.75V to 12V
Output 3.3V fixed
Max Current 800mA
Type AMS1117 Linear
4.2Editor score
AMS1117-3.3 15pcs
Input 4.75V to 12V
Output 3.3V fixed
Max Current 800mA
Type LDO Regulator
5.0Editor score
5PCS 3.3V Mini Buck Converter
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
Input 4.5V to 30V
Output 3.3V fixed
Max Current 1.8A
Size 17.5×12.3×4.3mm
4.8Editor score
10PCS 5V to 3.3V Step Down
Input 4.5V to 7V
Output 3.3V fixed
Max Current 800mA
Type AMS1117 Buck
5.0Editor score
3.3V Regulator 6pcs Mini Reducer
Input 4.5V to 24V
Output 3.3V fixed
Max Current 1.8A
Type MP1584EN Buck
4.9Editor score
1. 5pcs 3.3V Buck Converter Module – Best Overall Regulator
5pcs 3.3V Buck Converter Module
Input range 4.5V to 24V
Output voltage stable 3.3V
Current capacity up to 1.8A
Low ripple under 30mV
This module stands out as the top choice for powering microcontrollers and sensors that require a stable 3.3V supply. With a rating of 4.6 stars, users appreciate its ability to handle input voltages from 4.5V to 24V while maintaining a consistent output.
Pros
- Wide input voltage range
- High current output capability
- Compact and space saving
- Clean stable output power
Cons
- Inductive loads need protection
- Switching frequency may cause noise
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The standout quality here is the high current capacity of up to 1.8A combined with a very low ripple of less than 30mV. This ensures that sensitive components receive clean power, reducing the risk of glitches or resets during operation.
While the module is robust, users must be cautious when connecting inductive loads like motors or servos. Adding a diode and capacitor is recommended to prevent voltage spikes that could damage the module or connected circuitry.
Ideal for hobbyists and makers who need multiple units for various projects, this 5-pack offers great value. It is highly recommended for any project requiring a reliable conversion from higher voltages to 3.3V.
Wide Input Voltage Flexibility
The ability to accept inputs from 4.5V up to 24V means you can use it with standard 5V, 9V, 12V, or even 24V power supplies without needing a replacement.
Compact Design for Tight Spaces
Measuring just 17.5x12x4.5mm, this module easily fits into narrow spaces within DIY, embedded, or portable projects where board real estate is limited.
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2. 10 Pack AMS1117-3.3 – Best Budget Regulator
10 Pack AMS1117-3.3
Input range 4.75V to 12V
Output voltage fixed 3.3V
Current capacity 0.8A maximum
Overheat shutdown protection included
For projects where cost is a primary concern, this 10-pack of AMS1117-3.3 regulators offers an unbeatable price point. With a 4.1 star rating, it is a reliable choice for applications that do not require high current output.
Pros
- Very affordable per unit
- Simple 3-pin design
- Built-in thermal protection
- Good for low current needs
Cons
- Lower current limit than buck
- Linear design less efficient
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The key strength lies in its simplicity and built-in safety features. It supports inputs from 4.75V to 12V and provides a fixed 3.3V output. The overheat shutdown circuit protects the chip from damage due to excessive temperatures.
However, as a linear regulator, it is less efficient than switching buck converters, especially with larger voltage drops. Additionally, the 0.8A current limit may not suffice for power-hungry peripherals like motors or high-brightness LEDs.
This pack is perfect for students, educators, and hobbyists who need multiple units for classroom projects or small sensor networks. It is a solid choice when budget constraints are tight and power demands are modest.
Simple 3-Pin Connection
The module features a dual-panel design with input output using a 2-pin single row pin for easy connection, making it very user-friendly for beginners.
Thermal Protection Features
The overheat shutdown circuit ensures that the regulator will automatically cut off power if temperatures get too high, preventing permanent damage to the component.
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3. 5pcs 3.3V DC-DC Buck Converter – Best Premium Regulator
5pcs 3.3V DC-DC Buck Converter
Input range 4.5V to 30V
Output voltage stable 3.3V
Current output up to 1.8A
Ultra-compact 17.5×12.3×4.3mm
This module represents the premium end of the spectrum with a high rating of 4.8 stars. It combines an incredibly wide input range with a compact footprint, making it ideal for professional and portable applications alike.
Pros
- Very wide input voltage range
- Ultra compact and portable
- Clean output for sensors
- Ready for Arduino and ESP32
Cons
- Premium price per unit
- Soldering wires required
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Its standout feature is the ability to handle inputs from 4.5V all the way to 30V while delivering a stable 3.3V output. The ultra-compact size allows it to fit into wearables, drones, and IoT devices where space is at a premium.
While it is priced higher than basic linear regulators, the performance and versatility justify the cost. The clean power output under 30mV ripple ensures sensitive microcontrollers and sensors operate without interference or noise.
Recommended for advanced makers and professionals working on complex projects, this module offers reliable performance in diverse power environments. It is a robust choice for any project requiring both portability and high efficiency.
Ultra Compact Footprint
Measuring just 17.5×12.3×4.3mm, this module fits wearables, drones, and tight PCB layouts where traditional regulators would be too bulky.
Versatile Power Compatibility
With support for 4.5V to 30V input, it works seamlessly with 12V and 24V batteries, solar panels, and vehicle power systems.
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4. 5PCS DC-DC Step Down/Step Up – Best Boost/Buck Regulator
5PCS DC-DC Step Down/Step Up
Input range 1.8V to 5V
Output voltage fixed 3.3V
Current capacity 100mA max
Type step down step up
This converter stands out for its ability to handle inputs both above and below the target 3.3V output. It is an excellent choice for battery-powered devices where voltage might drop during discharge.
Pros
- Handles input below 3.3V
- Perfect for battery sources
- 5-pack quantity value
- Stable output voltage
Cons
- Low current of 100mA
- Not for high power loads
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The primary strength lies in its versatility. Unlike standard buck converters that require input higher than output, this module can step up from as low as 1.8V while also stepping down from 5V to maintain a steady 3.3V.
The main limitation is the current capacity of 100mA, which restricts its use to low-power sensors or logic circuits. It is not suitable for driving motors, LEDs, or other power-hungry peripherals.
Ideal for small IoT nodes or battery-powered wearables, this 5-pack offers great value for prototyping. It ensures stable power even as battery voltage fluctuates, making it a reliable component for energy-sensitive projects.
Battery Friendly Design
Since it accepts inputs from 1.8V up to 5V, it can boost low battery voltage to 3.3V, extending the usable life of your battery powered projects.
Stable Output Stability
Regardless of whether the input is 3V, 3.7V, or 5V, the output remains a steady 3.3V, protecting your sensitive electronics from voltage drops.
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5. 3.3V Regulator 5pcs Mini Reducer – Best Compact Regulator
3.3V Regulator 5pcs Mini Reducer
Input range 4.5V to 24V
Output voltage fixed 3.3V
Current capacity up to 1.5A
Size 17.5×12.3×4.3mm
This module earns a perfect 5.0 star rating for its reliability and compact form factor. It is a Mini360 power module designed to deliver efficient power conversion in a very small package.
Pros
- Compact Mini360 design
- High current output
- Low ripple output power
- Wide input compatibility
Cons
- Inductive load protection needed
- Small size soldering challenge
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The key strength is its combination of high current output up to 1.5A and a tiny footprint. It accepts inputs from 4.5V to 24V and provides a stable 3.3V output with low ripple ensuring clean power for electronics.
Users should be aware that when driving motors or servos, additional protection components like Zeners and capacitors are needed to prevent ripple from affecting the circuit. Soldering wires to such a small board can also be challenging for beginners.
Recommended for portable devices and embedded systems, this module is an excellent choice for projects requiring high efficiency in a small space. It balances performance and size perfectly for modern electronic designs.
Mini360 Size Efficiency
With dimensions of 17.5×12.3×4.3mm, this module saves valuable board space, making it ideal for compact PCBs and portable electronics.
Clean Power Output
Output ripple is kept below 30mV, ensuring sensitive microcontrollers and sensors receive stable power without noise or voltage fluctuations.
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6. Dorhea 7 Pack 3.3V DC-DC – Best 7 Pack Regulator
Dorhea 7 Pack 3.3V DC-DC
Input range 4.75V to 12V
Output voltage fixed 3.3V
Current capacity 800mA max
Pack quantity 7 units
This 7-pack offers a balanced option for projects requiring multiple regulators without breaking the bank. With a rating of 4.2 stars, it is known for its simplicity and reliability in low-power applications.
Pros
- Good pack quantity
- Affordable price point
- Simple 3-pin design
- Overheat protection included
Cons
- Lower current at 800mA
- Linear regulator efficiency
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The strength lies in its ease of use and protective features. It supports inputs from 4.75V to 12V and provides a fixed 3.3V output. The AMS1117-3.3 regulator chip includes overheat protection to ensure safety.
However, the current limit of 800mA means it may not be suitable for projects with high power requirements. As a linear regulator, it also dissipates more heat than a switching buck converter with large voltage drops.
This pack is recommended for classrooms or workshops where multiple students or members need individual units. It is a practical choice for educational projects and low-power sensor networks.
Simple Connection Design
The 3-pin design makes connection to development boards like Arduino and ESP32 straightforward, allowing quick integration into various circuits.
Built-in Safety Features
Overheat shutdown circuitry ensures the module will stop working safely if temperatures exceed safe limits, protecting both the module and your circuit.
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7. AMS1117-3.3 15pcs – Best 15 Pack Regulator
AMS1117-3.3 15pcs
Input range 4.75V to 12V
Output voltage fixed 3.3V
Current capacity 800mA max
Pack quantity 15 units
With a 5.0 star rating, this 15-pack is highly appreciated by users for its value and reliability. It is ideal for large scale projects, classrooms, or anyone needing a substantial inventory of regulators.
Pros
- 15-pack large quantity
- High customer satisfaction
- Stable output voltage
- Budget friendly option
Cons
- Linear regulator heat
- Requires soldering skills
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The standout feature is the combination of bulk quantity and consistent quality. Each unit stabilizes input voltages from 4.75V to 12V to a precise 3.3V output with minimal fluctuation during load changes.
The main trade-off is that it is a linear regulator, which generates more heat than switching options. Users should ensure proper ventilation or heat sinking if using these in high ambient temperature environments.
This pack is recommended for institutions, large workshops, or serious hobbyists stocking up. The large quantity ensures you always have spares available, reducing project downtime due to component issues.
Bulk Quantity Advantage
Receiving 15 units in one package ensures you have enough regulators for extensive prototyping or multiple small projects without needing to reorder.
Stable Voltage Output
Voltage accuracy is ±2%, ensuring minimal voltage fluctuation when the load changes, which is crucial for sensitive digital circuits and microcontrollers.
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8. 5PCS 3.3V Mini Buck Converter – Best PCB Regulator
5PCS 3.3V Mini Buck Converter
Input range 5V to 30V
Output voltage fixed 3.3V
Current capacity up to 1.8A
Size 0.67×0.24×0.16in
This module offers a unique design with a very small PCB board that saves space. It is designed for high current output and includes reverse polarity protection to prevent accidental wiring errors.
Pros
- Very small board size
- High output current
- Stable voltage output
- Reverse polarity protection
Cons
- Lower average rating
- Small PCB board size
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Its primary strength is the ability to output up to 1.8A from a wide input range of 5V to 30V. The switching frequency of 1.5MHz ensures a stable output with ripple under 30mV.
However, the lower rating of 3.4 stars suggests some inconsistencies or quality control issues reported by users. The small PCB size might also make soldering connections more difficult for some.
It is recommended for advanced users who need small form factor modules and are comfortable troubleshooting electronics. The reverse polarity protection adds a layer of safety for complex projects.
Reverse Polarity Protection
The PCB board has a reverse polarity mark and protection circuitry which helps suppress ripple and protect the circuit from damage due to incorrect wiring.
High Current Capability
With a maximum output current of 1.8A, this module can power demanding devices while maintaining a stable voltage output under load.
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9. 10PCS 5V to 3.3V Step Down – Best Value 10 Pack Regulator
10PCS 5V to 3.3V Step Down
Input range 4.5V to 7V
Output voltage fixed 3.3V
Current capacity 800mA max
Pack quantity 10 units
This 10-pack earns a perfect 5.0 star rating for its reliability and value. It is a versatile module suitable for projects requiring input voltages from 4.5V to 7V with a fixed 3.3V output.
Pros
- 10-unit pack value
- Wide input range
- Automatic adjustable boost
- High user rating
Cons
- Voltage limit restrictions
- Not for high loads
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The main strength lies in its automatic adjustable boost board start limit voltage, which ensures the module operates within safe voltage limits. This prevents damage if the input voltage exceeds the recommended range.
However, the operating voltage must be carefully monitored. Exceeding the limits can easily damage the unit, so it is important to design circuits that stay within the specified 4.5V to 7V window.
Recommended for hobbyists who need a bulk supply for testing and prototyping, this pack is a solid value. It is suitable for low-current applications where voltage stability is key.
Automatic Voltage Limiting
The automatic adjustable boost board start limit voltage feature helps protect the module by preventing operation outside its safe voltage range.
Versatile Input Range
Supporting inputs from 4.5V to 7V allows flexibility for various power sources including standard batteries and regulated supplies.
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10. 3.3V Regulator 6pcs Mini Reducer – Best Aircraft Model Regulator
3.3V Regulator 6pcs Mini Reducer
Input range 4.5V to 24V
Output voltage fixed 3.3V
Current capacity up to 1.8A
Type MP1584EN Buck
This module is a top choice for high-power projects, earning a 4.9 star rating. It utilizes the MP1584EN chip to deliver up to 1.8A while maintaining a small form factor.
Pros
- High current output
- High customer rating
- Compact MP1584EN design
- Stable 3.3V output
Cons
- Inductive load protection
- Small size requires care
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The standout feature is its ability to handle high input voltages up to 24V while providing a strong 1.8A output. This makes it highly suitable for aircraft models, drones, and industrial control systems.
Users should take care when connecting inductive loads, as large ripples can affect rear stage chips. Adding Zener diodes and capacitors is recommended to ensure system stability and longevity.
This pack is recommended for makers working on complex mechanical or aerospace projects. The high current capacity ensures motors and servos receive the power they need without voltage drops.
High Performance MP1584EN
The MP1584EN power module offers high efficiency and a 1.8A output, making it ideal for power-hungry applications like drones and industrial equipment.
Input Voltage Flexibility
Accepting inputs from 4.5V to 24V allows compatibility with a wide range of batteries and power supplies used in RC models and vehicles.
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Buying Guide – How to Choose the Best 5V to 3V Voltage Regulator
Choosing the right voltage regulator depends on your project's specific requirements. This guide helps you evaluate key factors like input range, current capacity, and regulator type.
Input Voltage Range
Ensure the regulator accepts your expected input voltage. Buck converters typically handle wider ranges like 4.5V to 24V, while linear regulators might be limited to lower ranges.
Select a regulator that can safely handle your power supply voltage without requiring additional components.
Output Current Capacity
Determine the total current your load requires. If using microcontrollers and sensors, 800mA may suffice. For motors or high-power devices, look for 1.5A to 1.8A options.
Choosing a regulator with sufficient current headroom prevents overheating and ensures stable operation.
Regulator Type
Buck converters are efficient and generate less heat, ideal for battery projects. Linear regulators like AMS1117 are simpler but less efficient and generate more heat.
Use buck regulators for high efficiency and linear regulators for low noise in audio or sensitive analog circuits.
Physical Size
Consider the available space on your board. Compact Mini360 modules are perfect for portable devices, while larger modules may fit more easily into breadboard setups.
Smaller modules save space but can be harder to solder and handle during assembly.
Output Ripple
Low output ripple ensures sensitive components like microcontrollers and sensors operate without glitches. Look for modules with ripple under 30mV.
Reducing ripple improves system reliability and reduces the need for additional filtering components.
Pack Quantity
Buying in bulk can reduce costs per unit and ensure you have spares. Packs of 5, 7, 10, or 15 units offer good value for hobbyists and educators.
Consider your project volume and future needs to determine the best pack size.
Protection Features
Look for built-in protections like overheat shutdown, overcurrent protection, and reverse polarity protection. These features prevent accidental damage to your components.
Prioritize modules with safety features to extend the lifespan of your electronics.
Ease of Connection
Modules with 3-pin designs or labeled pins (VIN, OUT, GND) simplify wiring. Some come with pre-attached terminals while others require soldering.
Choose based on your comfort level with soldering and connection requirements.
How to Use and Care for Your 5V to 3V Voltage Regulator
Always connect the input voltage correctly to the VIN pin and ground to GND. Double check polarity before powering on to prevent damage.
If using motors or inductive loads, add external capacitors and diodes as recommended by the datasheet to protect against voltage spikes.
Ensure adequate ventilation or use heat sinks if running the regulator at high currents to prevent overheating and thermal shutdown.
Frequently Asked Questions
What is the difference between a buck converter and a linear regulator?
A buck converter uses switching to convert voltage efficiently with less heat. A linear regulator uses a resistive method which is simpler but generates more heat and is less efficient.
Can I use a 3.3V regulator with a 12V power supply?
Yes, many buck converters support inputs up to 24V or 30V. However, linear regulators like AMS1117 typically only support inputs up to 12V or lower.
How do I determine the required current for my project?
Check the datasheet of each component like microcontrollers or sensors. Add up their currents and choose a regulator with a higher capacity for safety.
Why is my regulator getting hot?
Heat can be caused by high current draw or large voltage drops in linear regulators. Using a buck converter or adding a heatsink can reduce this heat.
Do I need external capacitors for these modules?
Most modules come with built-in capacitors. However, adding external capacitors near the input and output can improve stability especially with long wires or inductive loads.
What happens if I exceed the current limit?
Exceeding the current limit may cause overheating, output voltage drops, or permanent damage. Some modules include overcurrent protection to prevent this.
Final Thoughts on Choosing the Best 5V to 3V Voltage Regulator
This guide has highlighted the top 10 options for 5V to 3V voltage regulation. The 5pcs 3.3V Buck Converter Module stands out for its balance of performance and reliability.
Prioritize your project's voltage and current needs when selecting a module. Buck converters are preferred for efficiency while linear regulators suit simple low-noise circuits.
Prices and availability change frequently. Check current listings before purchasing to ensure you get the best value and quality for your electronics.