10 Pack 3 Pins AMS1117-3.3
4.1Editor score
Simple 3-pin design for easy wiring
Fixed 3.3V output voltage stability
Affordable 10-pack value for makers
In this guide
Finding the right voltage regulator is crucial for powering microcontrollers and sensors reliably. A good regulator ensures clean power while protecting sensitive components from fluctuations.
We evaluated ten top-rated regulators based on efficiency, current output, and build quality. This list covers buck converters and linear regulators for diverse project needs.
Each pick highlights key specs and ideal use cases to help you choose quickly. Remember that prices and availability can change, so verify details before buying.
Top 3 Picks for Best 5V to 3V Voltage Regulator
5pcs 3.3V Buck Converter Module
4.6Editor score
Wide 4.5V to 24V input range
Stable 3.3V output up to 1.8A
Ultra-compact 17.5mm size design
3.3V Regulator 6pcs Mini Reducer
4.9Editor score
High 1.8A maximum output current
Mini360 compact PCB form factor
Low ripple under 30mV output
Top 10 Best 5V to 3V Voltage Regulator in 2026 Compared
This side-by-side comparison shows key specifications for all ten products to help you find the best fit for your power conversion needs.
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 3 Pins 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 Buck/Boost Converter
5.0Editor score
3.3V Regulator 5pcs Mini Reducer
Input 4.5V to 24V
Output 3.3V Fixed
Max Current 1.8A
Size 17.5×12.3×4.3mm
5.0Editor score
Dorhea 7 Pack AMS1117-3.3V
Input 4.75V to 12V
Output 3.3V Fixed
Max Current 800mA
Type Linear Regulator
4.2Editor score
AMS1117-3.3 DC 4.75V-12V
Input 4.75V to 12V
Output 3.3V Fixed
Max Current 800mA
Accuracy +/-2%
5.0Editor score
5PCS 3.3V Mini Buck Converter Board
Input 5V to 30V
Output 3.3V Fixed
Max Current 1.8A
Size 0.67×0.24×0.16 inches
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
10PCS 5V to 3.3V DC-DC
Input 4.5V to 7V
Output 3.3V Fixed
Max Current 800mA
Type AMS1117 Linear
5.0Editor score
3.3V Regulator 6pcs Mini Reducer
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 – Best Overall Voltage Regulator
5pcs 3.3V Buck Converter Module
Input 4.5V to 24V
Output 3.3V Stable
Current 1.8A Max
Freq 1MHz to 1.5MHz
This converter module stands out as the top choice for most DIY electronics projects. It offers a wide input range from 4.5V to 24V while maintaining a stable 3.3V output.
Pros
- Wide input voltage range
- High current output capacity
- Very compact size
- Low output ripple
- Great value pack
Cons
- Requires protection for inductive loads
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Its ability to supply up to 1.8A makes it suitable for powering microcontrollers and sensors simultaneously. The low ripple ensures clean power for sensitive components.
The ultra-small footprint fits easily into tight spaces without compromising performance. Users appreciate the five-pack value for building multiple circuits at once.
Ideal for hobbyists needing reliable power conversion for Arduino or ESP32 projects. This module balances performance and size exceptionally well for the price.
Stable Power for Sensitive Electronics
The low ripple under 30mV protects microcontrollers from voltage noise that could cause glitches.
Space Saving Design
Its tiny dimensions allow integration into wearable devices or compact enclosures easily.
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2. 10 Pack 3 Pins AMS1117-3.3 – Best Budget Voltage Regulator
10 Pack 3 Pins AMS1117-3.3
Input 4.75V to 12V
Output 3.3V Fixed
Current 0.8A Max
Protection Overheat Circuit
This AMS1117-3.3 pack provides an accessible entry point for linear voltage regulation needs. Each unit converts input voltages between 4.75V and 12V down to a fixed 3.3V output.
Pros
- Very affordable pack size
- Simple three pin design
- Built in protection
- Fits standard MCUs
- Easy soldering
Cons
- Lower current than buck options
- Linear design less efficient
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The simple dual-panel design with single row pins makes connection straightforward for beginners. It includes overheat shutdown circuits to prevent damage under overload conditions.
While it cannot match switching regulators on efficiency, it delivers steady power for low current devices. The ten-pack quantity ensures you have spares for multiple builds.
Perfect for simple projects like Arduino boards where power efficiency is less critical. Choose this if you prioritize ease of use and low cost over heat dissipation.
Simple Pin Layout
The three pin setup allows quick connections to development boards without complex wiring.
Protection Features
Integrated overheat shutdown safeguards your circuit against accidental shorts or high loads.
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3. 3.3V Regulator 6pcs Mini Reducer – Best Premium Voltage Regulator
3.3V Regulator 6pcs Mini Reducer
Input 4.5V to 24V
Output 3.3V Stable
Current 1.8A Max
Size 17x11x3.6mm
This MP1584EN based converter sets the standard for high performance in a tiny footprint. It handles input voltages from 4.5V to 24V while delivering a clean 3.3V output.
Pros
- Highest current capacity
- Extremely small size
- Low output ripple
- MP1584EN chip quality
- Great pack quantity
Cons
- Requires protection for motors
- Higher price than others
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Its ability to supply 1.8A continuous current makes it robust for demanding loads. The Mini360 form factor is among the smallest available for such high power.
Users report excellent stability with ripple well under 30mV even at high loads. The six-pack value justifies the premium pricing for serious projects needing reliability.
Ideal for high current robotics or portable devices requiring efficient power conversion. This board is the top pick when performance and space efficiency are paramount.
Superior Current Handling
Delivering 1.8A allows it to power motors and sensors simultaneously without voltage drops.
Premium Chip Selection
The MP1584EN regulator chip ensures high efficiency and thermal performance for long use.
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4. 5PCS DC-DC Step Down/Step Up – Best Low Current Voltage Regulator
5PCS DC-DC Step Down/Step Up
Input 1.8V to 5V
Output 3.3V Fixed
Current 100mA Max
Type Step Up/Down
This buck-boost converter handles inputs ranging from 1.8V to 5V flexibly to produce 3.3V. It excels in low current applications where efficiency matters most.
Pros
- Bidirectional input voltage
- Works with single cells
- Perfect 100mA limit
- Small footprint board
- High user rating
Cons
- Low current capability
- Not for heavy loads
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Ideal for battery-powered devices like sensors that may see voltage drop over time. The 100mA limit keeps power draw low while maintaining stable output.
Users praise its perfect performance for small IoT projects needing minimal power. The five-pack value is excellent for prototyping distributed sensor networks.
Choose this when you need to step up or down voltage efficiently. It is the best solution for low-power wearable or remote sensor applications.
Battery Friendly Operation
Supporting inputs down to 1.8V allows use with single cell batteries effectively.
Compact Form
Its small size fits easily into battery compartments or tiny PCB areas.
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5. 3.3V Regulator 5pcs Mini Reducer – Best Compact Voltage Regulator
3.3V Regulator 5pcs Mini Reducer
Input 4.5V to 24V
Output 3.3V Fixed
Current 1.5A Max
Size 17.5×12.3×4.3mm
This Mini360 module delivers strong performance in a space-saving design for DIY users. It accepts inputs from 4.5V to 24V and provides steady 3.3V output.
Pros
- Wide input voltage range
- Strong 1.5A current
- Tiny dimensions
- Low ripple output
- Five pack included
Cons
- Needs capacitor for motors
- Fixed 3.3V only
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The 1.5A current capacity handles most microcontroller projects with headroom. Users note its clean power output with minimal ripple even under load.
Its tiny size helps in building portable enclosures or wearables without bulk. The five-pack allows easy sharing across multiple projects or teams.
Select this for portable projects needing high current in a small box. It balances size and power delivery better than larger alternatives.
Minimal Ripple Output
Clean power ensures reliable operation of sensitive digital components without noise.
High Current Capability
Supporting 1.5A allows powering demanding peripherals alongside main controllers.
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6. Dorhea 7 Pack 3.3V DC-DC Buck Converter – Best Value Voltage Regulator
Dorhea 7 Pack 3.3V DC-DC Buck Converter
Input 4.75V to 12V
Output 3.3V Fixed
Current 800mA Max
Pinout Three Pin Simple
This Dorhea AMS1117 pack offers solid linear regulation for simple step-down needs. Each unit works with inputs between 4.75V and 12V to produce 3.3V.
Pros
- Low price point
- Easy to solder
- Stable output
- Good pack quantity
- Built-in protection
Cons
- Limited to 800mA
- Linear heat issues
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The three pin layout simplifies connections for beginners and prototyping work. It includes overheat shutdown circuits for safety against accidental overloads.
Users find it reliable for powering small MCUs like STM32 or ESP32. The seven-pack provides ample supply for a series of different projects.
Choose this for low-current linear regulation tasks at a low cost. It is a dependable option for non-critical power supply requirements.
Simplifying Connection
Three pin pins reduce wiring errors for novice builders easily.
Affordable Bulk
Purchasing a seven pack saves money over single unit buys for teams.
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7. AMS1117-3.3 DC 4.75V-12V – Best Quantity Voltage Regulator
AMS1117-3.3 DC 4.75V-12V
Input 4.75V to 12V
Output 3.3V Fixed
Current 800mA Max
Accuracy 2%
This fifteen-pack AMS1117-3.3 set provides exceptional value for bulk production runs. Each regulator stabilizes input voltage from 4.75V to 12V down to 3.3V.
Pros
- Large fifteen pack size
- Accurate voltage output
- Low dropout design
- Safety protection included
- Broad temperature range
Cons
- Linear heat generation
- Fixed 800mA current
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The built-in overcurrent and overheat protection ensures chip safety in varied conditions. Accuracy within plus or minus two percent keeps output voltage precise.
Ideal for educational kits or projects needing multiple small regulators without waste. Its low dropout design helps when battery voltage drops over time.
Choose this if you need large quantities of linear regulators at low cost. It is perfect for classroom supplies or extensive prototyping needs.
Precise Voltage Output
Two percent accuracy keeps devices stable even when load current varies slightly.
Safety Features
Protection circuits prevent burnout during accidental overloads in circuits.
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8. 5PCS 3.3V Mini Buck Converter Board – Best Compact Voltage Regulator
5PCS 3.3V Mini Buck Converter Board
Input 5V to 30V
Output 3.3V Fixed
Current 1.8A Max
Size 0.67 inch
This tiny buck converter board handles high current within a very small footprint. It accepts inputs from 5V to 30V and delivers stable 3.3V output.
Pros
- Extremely small board
- High 1.8A current
- Wide input voltage
- Simple PCB design
- Five pack value
Cons
- Lower user rating
- Needs heat dissipation
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Its ability to supply 1.8A makes it suitable for moderate power needs. The PCB design includes a reverse polarity mark to prevent connection errors.
While it is highly efficient, users should ensure proper ventilation at high currents. The five-pack allows deployment across multiple projects easily.
Select this when space is at a premium and you need high current. It is ideal for wearable or embedded systems with tight size constraints.
Reverse Polarity Mark
Clear markings reduce risk of accidental short circuits during assembly.
High Current Small
Delivering 1.8A in such a small package is excellent for compact gear.
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9. 5pcs 3.3V DC-DC Buck Converter – Best Battery Voltage Regulator
5pcs 3.3V DC-DC Buck Converter
Input 4.5V to 30V
Output 3.3V Fixed
Current 1.8A Max
Size 17.5×12.3×4.3mm
This converter supports wide input ranges from 4.5V to 30V making it versatile. It provides stable 3.3V output capable of driving loads up to 1.8A.
Pros
- Wide input voltage range
- High output current
- Works with vehicle power
- Clean output power
- Ready to solder
Cons
- No rating data
- Needs external protection
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It works well with 12V or 24V batteries found in vehicles or solar setups. The low ripple ensures clean power for sensitive microcontrollers and sensors.
Its compact size fits into tight layouts without blocking other components. Ready soldering wires and go design simplifies deployment for quick builds.
Choose this for automotive or solar applications needing reliable voltage step down. It balances versatility and performance for many power sources.
Vehicle Power Compatible
Supporting 24V input allows direct use with truck or RV batteries.
Clean Power
Low ripple output prevents noise interference on audio or data lines.
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10. 10PCS 5V to 3.3V DC-DC Step Down – Best Entry Voltage Regulator
10PCS 5V to 3.3V DC-DC Step Down
Input 4.5V to 7V
Output 3.3V Fixed
Current 800mA Max
Type AMS1117 Module
This AMS1117 module pack is ideal for basic 5V to 3.3V step down tasks. It accepts inputs between 4.5V and 7V and outputs a stable 3.3V.
Pros
- Ten pack quantity
- Simple input range
- Fixed output voltage
- Easy to connect
- Low cost option
Cons
- Narrow input range
- Current limit 800mA
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The fixed 800mA current limit protects the load while ensuring safe operation. The ten-pack provides plenty of modules for distributed projects.
Users value its simplicity for powering small sensors or microcontrollers reliably. The automatic start limit voltage ensures consistent behavior across units.
Select this for simple linear power regulation needs in small electronics. It is a practical option for low cost mass production prototypes.
Simplified Wiring
Fixed output removes need for trimming or adjustment on your board.
Safe Limits
Built-in current limit prevents damage to modules or connected devices.
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Buying Guide – How to Choose the Best 5V to 3V Voltage Regulator
Selecting the right voltage regulator requires balancing output current, efficiency, and package size. This guide covers key factors to consider for your project.
Output Current
Check the maximum current your load requires including microcontrollers and sensors. Buck converters often provide higher current like 1.8A compared to linear regulators at 800mA.
Ensure the regulator rating exceeds your peak load to prevent thermal shutdown or voltage drop.
Input Voltage Range
Verify the input range matches your power source like 5V USB or 12V batteries. Wide range modules like 4.5V to 24V offer flexibility for multiple supply options.
Input range compatibility ensures reliable operation even if your source voltage varies over time.
Efficiency and Heat
Switching buck converters are more efficient than linear regulators for step down applications. Linear types like AMS1117 may generate more heat when difference between input and output is large.
Choose a switching module for high current to reduce battery drain and heat dissipation.
Output Ripple
Look for low output ripple to protect sensitive components from voltage noise. Good modules keep ripple under 30mV ensuring clean power for microcontrollers and sensors.
Lower ripple values improve performance for audio or communication circuits.
Size and Form
Consider your PCB or enclosure space when selecting module dimensions. Mini360 style boards are compact at around 17mm length for tight layouts.
Smaller sizes are essential for wearables or portable devices with limited room.
Pack Quantity
Buying packs of five or ten provides value if you build multiple projects. It ensures you have spares for prototypes without repeated shipping costs.
Bulk quantities help teams distribute regulators across several development boards easily.
Protection Features
Check for overheat or overcurrent protection to safeguard your regulator. Linear regulators often include thermal shutdown while switching modules add current limiting.
Protection features prevent permanent damage during accidental short circuits or overload.
Price and Value
Compare cost per unit in multi packs to find the best budget option. Higher priced units may offer better efficiency or higher current that saves long term.
Balance initial cost against performance needs to avoid overspending on unnecessary features.
How to Use and Care for Your 5V to 3V Voltage Regulator
Connect input voltage to VIN and ground to GND following the pinout clearly. Ensure your input source is within the specified range for safe operation.
Add decoupling capacitors near input and output pins to reduce noise and ripple. This helps stabilize voltage during current spikes from microcontroller loads.
If using motors or servos add external protection like diodes and capacitors. Inductive loads can create voltage spikes that harm the regulator chip.
Frequently Asked Questions
What is the difference between buck and linear regulators?
Buck converters use switching to step down voltage efficiently generating less heat. Linear regulators like AMS1117 use resistance which produces more heat but simpler design.
Can I use these regulators for 3V logic devices?
Most modules output 3.3V which is compatible with 3V logic tolerances. Check your device datasheet to confirm safe operating voltage ranges.
How do I protect the regulator from inductive loads?
Add a diode and capacitor at the output when powering motors. This prevents back EMF spikes from damaging the sensitive internal components.
Why does the output voltage drop under load?
This can happen if current exceeds the rating or wiring resistance is high. Ensure your regulator can handle the full load current required.
What is the maximum input voltage allowed?
Most buck modules accept up to 24V or 30V. Always check the specific product data to avoid exceeding limits that cause damage.
Do these regulators need a heatsink?
Linear regulators may need a heatsink at high current. Buck modules generally run cooler but may need airflow at peak load.
Final Thoughts on Choosing the Best 5V to 3V Voltage Regulator
We highlighted ten reliable options including the 5pcs Buck Converter and AMS1117 packs. These provide solid performance for diverse electronics and embedded needs.
Prioritize current capacity and efficiency if you power microcontrollers or motors. For simple low current needs linear regulators offer affordable simplicity.
Always confirm current pricing and stock before purchasing to ensure value. Your power supply quality impacts every other component in your project.