10 Pack 3 Pins AMS1117-3.3 DC 4.75V-12V to 3.3V Voltage Regulator
4.1Editor score
Simple 3 pin design for easy connection
Supports input from 4.75V to 12V
Includes overheat protection for safety
In this guide
Finding the right voltage regulator is essential for powering sensitive electronics like microcontrollers and sensors safely. A good regulator ensures stable output despite input fluctuations.
We compared ten top-rated products based on efficiency, size, current capacity, and user feedback. This list covers both linear and switching options for various needs.
Each pick highlights key specs and real-world performance. Prices change often so verify current offers before buying to get the best deal for your project.
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 4.5 to 24V
Stable 3.3V output up to 1.8A
Compact size fits narrow project spaces easily
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
Ultra small size for tight enclosures
Low ripple under 30mV for clean power
High switching frequency for efficiency
Top 10 Best 5V to 3V Voltage Regulator in 2026 Compared
This side by side comparison highlights the key specifications and differences across all ten selected voltage regulator modules to help you choose the right fit.
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 17.5mm x 12mm
4.6Editor score
Editor's Choice
10 Pack 3 Pins AMS1117-3.3
Input 4.75V to 12V
Output 3.3V fixed
Max Current 0.8A
Linear Regulator Type
4.1Editor score
Best Premium
5PCS DC-DC Step Down Step Up
Input 1.8V to 5V
Output 3.3V fixed
Max Current 100mA
Step Down Step Up
5.0Editor score
3.3V Regulator 5pcs Mini Reducer
Input 4.5V to 24V
Output 3.3V fixed
Max Current 1.8A
Switching Frequency 1.5MHz
5.0Editor score
Dorhea 7 Pack 3.3V DC-DC
Input 4.75V to 12V
Output 3.3V fixed
Max Current 800mA
AMS1117 Chipset
4.2Editor score
AMS1117-3.3 DC 4.75V-12V
Input 4.75V to 12V
Output 3.3V fixed
Max Current 800mA
Low Dropout Voltage
5.0Editor score
5PCS 3.3V Mini Buck Converter Board
Input 5V to 30V
Output 3.3V fixed
Max Current 1.8A
PCB Board Design
3.4Editor score
5pcs 3.3V DC-DC Buck Converter
Input 4.5V to 30V
Output 3.3V fixed
Max Current 1.8A
Compact Footprint
10PCS 5V to 3.3V DC-DC
Input 4.5V to 7V
Output 3.3V fixed
Max Current 800mA
Automatic Adjustable
5.0Editor score
3.3V Regulator 6pcs Mini Reducer
Input 4.5V to 24V
Output 3.3V fixed
Max Current 1.8A
MP1584EN Power Module
4.9Editor score
1. 5pcs 3.3V Buck Converter Module – Best Overall 5V to 3V Voltage Regulator
5pcs 3.3V Buck Converter Module
Input 4.5V to 24V
Output 3.3V fixed
Max Current 1.8A
Size 17.5mm x 12mm
This module stands out as the top pick for general use due to its robust performance and versatile input range. Users rate it highly for delivering stable 3.3V power even when input voltage fluctuates significantly.
Pros
- Wide input voltage range
- High current output
- Low ripple output
- Compact dimensions
- Value pack of five
Cons
- Requires diode for inductive loads
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The key strength lies in its ability to handle up to 1.8A while maintaining a clean output with ripple under 30mV. This ensures sensitive microcontrollers and sensors receive consistent power without noise interference that could cause errors.
One trade-off is the need for external protection when driving motors or servos. Adding a diode and capacitor is necessary to prevent voltage spikes from damaging the module or downstream components during load switching.
This is the ideal choice for hobbyists building multiple circuits or needing a reliable drop-in solution for 5V to 3.3V conversion. Its small size makes it perfect for portable projects where space is limited.
Stable Power for Sensitive Electronics
The low ripple ensures that microcontrollers and sensors operate without voltage spikes that could cause resets or data errors in your project circuits.
Space Efficient Design
With dimensions of just 17.5mm by 12mm this module fits into tight enclosures or dense PCB layouts where larger regulators would not fit comfortably.
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2. 10 Pack 3 Pins AMS1117-3.3 – Best Budget 5V to 3V Voltage Regulator
10 Pack 3 Pins AMS1117-3.3
Input 4.75V to 12V
Output 3.3V fixed
Max Current 0.8A
Linear Regulator Type
This pack offers exceptional value for projects needing multiple regulators without breaking the budget. The AMS1117 chipset is a proven linear regulator known for simplicity and reliability in low noise applications.
Pros
- Affordable bulk pack
- Simple pinout
- Overheat protection
- Easy to connect
- Wide application support
Cons
- Lower current capacity
- Linear efficiency lower than switching
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Its main advantage is the straightforward 3 pin design which simplifies connections for beginners. The overheat shutdown circuit adds a layer of safety ensuring the device protects itself if it gets too hot during operation.
However the current limit of 0.8A may not suit high power applications. Also linear regulators dissipate more heat than switching types so ensure adequate ventilation if operating near maximum current limits for long periods.
Buy this if you need simple reliable power for sensors or low power MCUs and want a bulk supply for multiple projects. It is an excellent entry point for those new to electronics power management.
Simple Connection Design
The dual panel design with single row pins makes wiring incredibly easy for development boards like Arduino without requiring complex soldering or routing.
Built in Safety Features
Overheat protection prevents damage during unexpected load changes ensuring your project remains safe even if conditions exceed normal operating parameters temporarily.
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3. 3.3V Regulator 5pcs Mini Reducer – Best Premium 5V to 3V Voltage Regulator
3.3V Regulator 5pcs Mini Reducer
Input 4.5V to 24V
Output 3.3V fixed
Max Current 1.8A
Switching Frequency 1.5MHz
With perfect user ratings this module represents the premium choice for those who demand the highest performance and reliability. It combines a tiny form factor with high current capability in a package that outperforms competitors.
Pros
- Perfect user ratings
- Tiny footprint
- High efficiency
- Low ripple
- Robust build quality
Cons
- Requires protection for motors
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The standout feature is its ultra compact size combined with 1.5MHz switching frequency. This allows for extremely efficient power conversion with minimal heat generation making it ideal for battery powered and wearable devices.
Like other buck converters it requires attention when driving inductive loads such as motors. Adding a Zener diode and capacitor protects the rear stage circuit from ripple spikes that could affect sensitive chips downstream.
Choose this for professional projects or high end prototypes where space and efficiency are critical. Its quality justifies the slightly higher cost compared to generic alternatives for demanding applications.
Miniature High Performance
At just 17.5mm by 12mm this module delivers 1.8A output while keeping heat low through efficient switching design perfect for tight spaces.
Clean Power Output
Ripple under 30mV ensures that sensitive analog circuits and sensors receive stable power without noise that could degrade signal quality or accuracy.
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4. 5PCS DC-DC Step Down Step Up – Best for Battery Applications 5V to 3V Voltage Regulator
5PCS DC-DC Step Down Step Up
Input 1.8V to 5V
Output 3.3V fixed
Max Current 100mA
Step Down Step Up
This converter is unique because it can both step down and step up voltage which is critical for battery powered projects where input voltage drops over time. Users give it perfect ratings for this flexibility and reliable 3.3V output.
Pros
- Bidirectional voltage conversion
- Perfect ratings
- Low input threshold
- Pack of five
- Flexible input range
Cons
- Low current output
- Not for high power loads
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Its ability to accept inputs as low as 1.8V means it keeps working even when a battery is nearly depleted. This extends runtime for low power devices like wireless sensors or wearable tech that need steady voltage.
The main limitation is the 100mA current limit. It simply cannot handle motors or high draw components. It is strictly for small signals or microcontrollers in sleep modes where power consumption is minimal.
Pick this for IoT devices or portable gadgets powered by single cell batteries. Its bidirectional capability ensures your device stays on from full charge until the battery is effectively drained.
Battery Runtime Extension
By stepping up voltage as battery drops this module keeps your device running longer than standard regulators that shut off once input falls below output level.
Ideal for Low Power Sensors
At 100mA max it is designed for sensors and MCUs in low power modes ensuring clean power without unnecessary bulk or complexity.
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5. Dorhea 7 Pack 3.3V DC-DC – Best for Educational Kits 5V to 3V Voltage Regulator
Dorhea 7 Pack 3.3V DC-DC
Input 4.75V to 12V
Output 3.3V fixed
Max Current 800mA
AMS1117 Chipset
This pack from Dorhea is a solid choice for educational labs or prototyping where you need several units for different teams. The AMS1117 chipset is widely supported and documented making it easy to find reference designs.
Pros
- Simple 3 pin layout
- Good for students
- Overheat protection
- Stable output
- Cost effective pack
Cons
- Current limit at 800mA
- Standard linear regulator
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The 3 pin layout simplifies soldering for beginners reducing the risk of wiring errors. Overheat protection adds peace of mind during classroom use where devices might be mishandled or overloaded accidentally.
The 800mA limit is adequate for most logic circuits but not for driving relays or motors directly. It serves well as a dedicated logic supply while higher current components have separate power rails.
This is the perfect pick for schools or maker spaces running workshops on electronics. The bulk pack ensures everyone has a regulator while keeping costs low for large groups learning power management.
Beginner Friendly Layout
The 3 pin design reduces complexity for students learning to wire power supplies correctly without needing complex PCB layouts.
Durable for Classroom Use
Built-in protection ensures that even if a circuit is shorted the module protects itself preventing damage during learning experiments.
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6. AMS1117-3.3 DC 4.75V-12V – Best for Bulk Projects 5V to 3V Voltage Regulator
AMS1117-3.3 DC 4.75V-12V
Input 4.75V to 12V
Output 3.3V fixed
Max Current 800mA
15 Piece Pack
This bulk pack offers fifteen units which is ideal for manufacturing small batches or large scale prototyping. Users give it perfect ratings for consistency and the low dropout voltage feature that improves efficiency slightly.
Pros
- Large bulk quantity
- Perfect ratings
- Low voltage difference
- Plug and play
- Wide application
Cons
- Linear efficiency
- Heat at high current
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Dynamic voltage difference control minimizes power waste by adjusting impedance based on load. This means less heat generated when the input and output voltages are close together helping to extend battery life in portable systems.
However as a linear regulator it dissipates heat proportional to the voltage drop. If you drop from 12V to 3.3V at 800mA expect significant heat requiring a heatsink or ventilation to avoid thermal shutdown.
Buy this when you need many reliable units for a project line and can manage heat properly. The large quantity saves time on sourcing individual components later for future batches.
Reduced Power Waste
The dynamic control lowers impedance when voltage drops minimizing energy lost as heat which helps in battery powered applications.
Mass Production Ready
Fifteen units in one pack streamline supply chain for small manufacturers needing consistent power modules for multiple devices.
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7. 5PCS 3.3V Mini Buck Converter Board – Best for Automotive Use 5V to 3V Voltage Regulator
5PCS 3.3V Mini Buck Converter Board
Input 5V to 30V
Output 3.3V fixed
Max Current 1.8A
PCB Board Design
This board stands out for its ability to accept up to 30V input which is useful in automotive or industrial environments where voltage spikes occur. A reverse polarity mark protects the circuit from accidental miswiring that could destroy components.
Pros
- High input voltage range
- Reverse polarity protection
- Compact size
- Stable switching
- Black PCB finish
Cons
- Lower user rating
- Needs heat management
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The switching frequency of 1.5MHz ensures stable output even under varying loads. However the user rating is lower than others possibly due to heat dissipation issues when running near maximum current without a heatsink in hot conditions.
While it performs well electrically it requires careful placement to avoid overheating. Ensure there is airflow or mount it on a metal surface if using it for long periods in enclosed spaces where heat builds up.
Choose this for vehicle electronics or industrial controls where input voltage may vary widely. The reverse polarity protection is a key safety feature for environments where wiring errors are more likely to happen.
Wide Input Voltage Support
Accepting up to 30V input makes it suitable for vehicle batteries or industrial power sources that standard regulators cannot handle safely.
Protection Against Miswiring
The reverse polarity mark helps users avoid connecting wires backward preventing accidental damage during installation in complex systems.
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8. 5pcs 3.3V DC-DC Buck Converter – Best for Wide Range Input 5V to 3V Voltage Regulator
5pcs 3.3V DC-DC Buck Converter
Input 4.5V to 30V
Output 3.3V fixed
Max Current 1.8A
Compact Footprint
This converter is built for versatility with an input range spanning from 4.5V to 30V. It works well with solar panels or vehicle power where voltage fluctuates wildly. Each unit is tested before shipping ensuring basic functionality out of the box.
Pros
- Very wide input range
- Compact size
- Clean output
- Ready for Arduino
- Tested before shipping
Cons
- No rating data
- Requires soldering
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Its compact footprint fits wearables and drones where every millimeter counts. The clean output with ripple under 30mV ensures microcontrollers and sensors stay stable even when input power is noisy or fluctuating significantly.
It requires basic soldering to connect wires and lacks a pre-installed connector. This means it is better for custom builds than quick plug and play scenarios. You will need to strip wires and solder carefully to use it.
Select this for outdoor or mobile projects powered by batteries or solar. Its wide input range ensures reliable operation even when your power source drops or spikes during use.
Wide Power Source Compatibility
Supporting up to 30V input allows connection to solar panels or car batteries without needing extra voltage limiting components.
Compact for Wearables
Its tiny size makes it suitable for wearable tech or drones where weight and space are critical design constraints for success.
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9. 10PCS 5V to 3.3V DC-DC – Best for Fixed 5V Input 5V to 3V Voltage Regulator
10PCS 5V to 3.3V DC-DC
Input 4.5V to 7V
Output 3.3V fixed
Max Current 800mA
Automatic Adjustable
This module is optimized for projects powered by standard 5V USB or wall adapters. It accepts inputs between 4.5V and 7V ensuring it works well with typical digital logic supplies. Users rate it highly for stability and ease of use.
Pros
- Optimized for 5V input
- High ratings
- Automatic start
- 10 piece pack
- Limit voltage control
Cons
- Narrow input range
- Current limit at 800mA
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The automatic start feature simplifies power-up sequences in your circuit. Limit voltage control protects against overvoltage conditions on the input side making it safer for connected components during power fluctuations.
The input range is narrow so do not connect it to higher voltage sources like 12V. It is strictly for 5V logic systems. The 800mA limit is sufficient for most MCU and sensor setups.
Pick this for Arduino or ESP8266 projects powered by USB. It ensures your 3.3V components get clean power from standard 5V adapters without worrying about voltage spikes.
USB Power Friendly
Designed for 4.5V to 7V inputs this module works perfectly with standard USB power supplies common in hobby electronics.
Automatic Startup
The automatic start simplifies circuit design by ensuring the regulator turns on reliably when power is applied without manual switches.
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10. 3.3V Regulator 6pcs Mini Reducer – Best for RC Applications 5V to 3V Voltage Regulator
3.3V Regulator 6pcs Mini Reducer
Input 4.5V to 24V
Output 3.3V fixed
Max Current 1.8A
MP1584EN Power Module
This regulator is frequently chosen for RC aircraft and drones where space is tight and power demands vary. Users rate it highly for delivering stable 3.3V even under dynamic load conditions common in flight controllers.
Pros
- High current output
- Great for RC
- Small size
- Stable output
- Protection recommended
Cons
- Inductive load protection needed
- Requires protection cap
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Its MP1584EN chipset allows for high efficiency and low heat. However when used with servos or motors protection is essential. Adding Zener diodes and capacitors prevents voltage spikes from damaging the logic side of your circuit.
At 1.8A it can power logic boards while a separate rail drives motors. Keep them electrically isolated to avoid noise coupling that could crash your flight controller mid flight during high load maneuvers.
Choose this for RC models or robotics where you need a compact yet powerful step down regulator. Ensure you install the recommended capacitors for smooth operation during rapid current changes.
Compact RC Fit
Its small 17mm x 11mm size fits perfectly in RC aircraft where every gram and millimeter impacts flight performance.
High Current Capability
Delivering 1.8A ensures that flight controllers get enough power even when other systems draw heavily during high throttle situations.
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Buying Guide – How to Choose the Best 5V to 3V Voltage Regulator
Selecting the right regulator depends on your voltage input current needs and physical space constraints. Consider these factors to match a module to your specific application.
Input Voltage Range
Check if your source is 5V or higher like 12V or 24V. Linear regulators like AMS1117 need close input voltage while switching buck converters handle wide ranges from 5V to 30V effortlessly.
Choose a regulator that accepts your highest expected input to avoid damage or shutdown during operation.
Current Requirements
Calculate the total current your 3.3V components will draw. Most modules offer 800mA or 1.8A. Ensure the regulator rating exceeds your load to prevent overheating or brownouts.
Always leave a safety margin above your peak load current for stable long term performance.
Linear vs Switching
Linear regulators are quieter and simpler but waste more heat. Switching regulators are more efficient but may introduce noise. Choose based on whether noise or battery life is more important.
Pick switching for efficiency and linear for sensitive analog circuits that need very clean power.
Physical Size
Measure your available space on the PCB or enclosure. Some modules are as small as 17mm while others are larger. Tiny footprint is critical for wearables or portable devices.
Ensure there is room for necessary capacitors and heat dissipation alongside the regulator size.
Protection Features
Look for built-in overheat and overcurrent protection. This safeguards your project against accidental shorts or overheating. Some models also have reverse polarity protection.
Modules with safety features reduce the risk of damage during prototyping or long term use.
Pack Quantity
Regulators are often sold in packs of 5 or 10. If you plan multiple projects or a class buy a bulk pack to save cost. Ensure the seller is reputable for quality consistency.
Buying in bulk ensures you have spares without waiting for shipping on future projects.
Noise and Ripple
Check the output ripple specification. Sensitive sensors need less than 30mV ripple to operate accurately. Switching modules should list this clearly.
Prioritize low ripple specs if your project involves audio or precise measurement signals.
Ease of Connection
3 pin designs are easiest to wire. Some modules come with headers or pre soldered pins. Others require you to solder wires yourself for custom builds.
Choose pre soldered options if you lack soldering experience or need quick deployment.
How to Use and Care for Your 5V to 3V Voltage Regulator
Connect the input pin to your power source and ensure you observe polarity markings. Connecting positive to negative can permanently damage the module instantly.
Place the regulator near your 3.3V devices to minimize voltage drop. Keep wires short to reduce noise interference on sensitive signal lines.
Avoid using the module with motors without a protection diode. This prevents voltage spikes from motors damaging the regulator or other components in your circuit.
Frequently Asked Questions
Can I use a 5V to 3V regulator with a 12V battery?
Yes if you use a switching buck converter that accepts 12V input. Linear regulators like AMS1117 will overheat with such a large voltage drop so always check the input range first.
What is the difference between 3V and 3.3V regulators?
Modern logic chips use 3.3V not 3V exactly. Buying a 3.3V regulator ensures compatibility with Arduino and ESP modules. A 3V regulator might under power these devices causing errors.
Do I need a heat sink for these regulators?
For 800mA linear regulators you may need a small heat sink. For switching modules like buck converters heat is minimal and a heat sink is rarely required.
How do I know if my module is working?
Measure the output with a multimeter to confirm it reads 3.3V. If it reads 0V or fluctuates check your input voltage and connections first.
What is ripple in voltage regulators?
Ripple is the small AC noise on the DC output. High ripple can cause glitches in sensors. Good modules keep ripple under 30mV for stable performance.
Why do I need a capacitor with my regulator?
Capacitors stabilize the output during voltage changes and prevent spikes from motors or switches. They protect your logic board from sudden current jumps.
Which regulator is best for Arduino projects?
AMS1117 or buck converters are both used. Buck converters are more efficient for battery power. AMS1117 is simpler for bench power with low heat requirements.
Can I stack these regulators for more current?
No you cannot stack regulators in parallel for higher current safely. Each module should feed its own dedicated circuit. Use a single high current module instead.
Final Thoughts on Choosing the Best 5V to 3V Voltage Regulator
We reviewed ten top-rated modules ranging from bulk linear packs to compact switching buck converters. The 5pcs buck converter stands out for its balance of power and size.
Prioritize input range and current needs before selecting a model. Always check protection features and ripple specs to ensure your devices stay safe during operation.
Prices change frequently so check current offers before buying. Verify the latest deals to ensure you get the best value for your project needs today.