10 Pack 3 Pins AMS1117-3.3 DC 4.75V-12V to 3.3V Voltage Regulator
4.1Editor score
Linear regulator with 0.8A output
Simple 3-pin connection design
Built-in overheat protection circuit
In this guide
Finding the right voltage regulator is crucial for protecting sensitive electronics. A good regulator converts higher voltages like 5V into stable lower voltages efficiently without excess heat.
We compared ten top-rated modules based on input range, output stability, and size. Each option supports common microcontrollers and sensors requiring consistent 3.3V power delivery.
Each pick highlights key specs and real-world use cases for makers. Prices and availability may change, so always verify current listings before purchasing your components.
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 4.5V to 24V input range
Stable 3.3V output up to 1.8A
Compact size fits tight PCB layouts
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 efficiency 1.8A output current
Ultra-compact 17.5mm length design
Low ripple ensures clean power supply
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 options. Review input voltage ranges, output current limits, and physical dimensions to find the perfect match for your project needs.
ProductsSpecificationsEditor scorePrice
Editor's Choice
5pcs 3.3V Buck Converter Module
Input 4.5V to 24V
Output 3.3V at 1.8A
Size 17.5x12x4.5mm
Switching frequency 1MHz
4.6Editor score
Editor's Choice
10 Pack 3 Pins AMS1117-3.3
Input 4.75V to 12V
Output 3.3V at 0.8A
Linear regulator type design
3-pin single row connection
4.1Editor score
Best Premium
5PCS DC-DC Step Down/Step Up Converter
Input 1.8V to 5V
Output 3.3V at 100mA
Step up and down capable
Small form factor module
5.0Editor score
3.3V Regulator 5pcs Mini Reducer DC 5-30V
Input 4.5V to 24V
Output 3.3V at 1.5A
Size 17.5×12.3×4.3mm
Switching frequency 1.5MHz
5.0Editor score
Dorhea 7 Pack 3.3V DC-DC Buck Converter
Input 4.75V to 12V
Output 3.3V at 0.8A
AMS1117 linear regulator core
3-pin design for easy soldering
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 at 0.8A
3-pin VIN OUT GND design
Overheat and overcurrent protection
5.0Editor score
5PCS 3.3V Mini Buck Converter Board Regulator
Input 5V to 30V
Output 3.3V at 1.8A
Size 0.67×0.24×0.16in
Reverse polarity protection included
3.4Editor score
5pcs 3.3V DC-DC Buck Converter
Input 4.5V to 30V
Output 3.3V at 1.8A
Size 17.5×12.3×4.3mm
Ready for Arduino and ESP32
10PCS 5V to 3.3V DC-DC Step Down Power Supply Buck Module
Input 4.5V to 7V
Output 3.3V at 0.8A
Automatic adjustable boost board
Start limit voltage protection
5.0Editor score
3.3V Regulator 6pcs Mini Reducer DC 4.75-23V
Input 4.5V to 24V
Output 3.3V at 1.8A
Size 17x11x3.6mm
MP1584EN power module core
4.9Editor score
1. 5pcs 3.3V Buck Converter Module – Best Overall Regulator
5pcs 3.3V Buck Converter Module
Input 4.5V to 24V
Output 3.3V 1.8A
Low ripple under 30mV
Compact 17.5mm size
This buck converter module delivers stable power from wide input sources. It holds a 4.6-star rating and supports up to 1.8A output current efficiently.
Pros
- Wide input voltage range
- High output current capacity
- Very low output ripple
- Five modules in one pack
- Stable for microcontrollers
Cons
- Requires diode for motors
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Its wide 4.5V to 24V input range makes it versatile for various power supplies. The low ripple ensures clean power for sensitive sensors and logic circuits.
While it is compact, inductive loads like motors may require external protection. Adding a diode and capacitor is necessary to prevent voltage spikes during operation.
Buyers seeking a reliable, high-current solution for DIY projects should choose this pack. It provides excellent value with five units ready for multiple builds.
Wide Voltage Compatibility
The input range accepts 5V to 24V supplies allowing use with batteries and wall adapters.
Stable Power Delivery
Switching frequency and low ripple design keep the output voltage steady under varying loads.
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2. 10 Pack 3 Pins AMS1117-3.3 – Best Budget Option
10 Pack 3 Pins AMS1117-3.3
Input 4.75V to 12V
Output 3.3V 0.8A
Linear regulator type
Overheat shutdown circuit
This AMS1117 linear regulator offers an affordable solution for standard voltage drops. It supports 0.8A output and works well with low-power MCUs and sensors.
Pros
- Low cost per unit
- Simple 3-pin layout
- Overheat protection built-in
- Ten units for bulk projects
- Fits standard PCB headers
Cons
- Lower efficiency at high currents
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The simple 3-pin design simplifies wiring for beginners and rapid prototyping. Built-in overheat shutdown protects the chip during overload conditions effectively.
Efficiency drops at higher currents compared to switching regulators due to heat dissipation. Ensure proper ventilation if running near maximum load for extended periods.
Ideal for tight budgets where ten units are needed for small electronics projects. The fixed 3.3V output provides reliable power for Arduino and STM32 boards.
Easy Connection Design
Single row pins make soldering straightforward on breadboards and prototype boards.
Thermal Protection
Automatic shutdown prevents permanent damage when temperatures exceed safe operating limits.
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3. 3.3V Regulator Mini Reducer – Best Premium Performance
3.3V Regulator 5pcs Mini Reducer
Input 4.5V to 24V
Output 3.3V 1.5A
Mini360 compact design
High switching frequency
This Mini360 buck converter achieves perfect ratings with reliable performance. Its ultra-compact size is ideal for space-constrained wearable and drone electronics.
Pros
- Perfect 5.0-star rating
- Extremely small footprint
- High current delivery
- Low output ripple noise
- Wide input range support
Cons
- Requires Zener for inductive loads
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The Mini360 chip allows high current output within a tiny 17.5mm module. Low ripple under 30mV ensures clean power for sensitive analog sensors.
While efficient, inductive loads may generate large ripples affecting rear-stage chips. Adding Zener diodes and capacitors protects downstream components from noise spikes.
Engineers needing maximum performance in minimal space should select this module. It combines high efficiency, small size, and stable output for demanding applications.
Mini360 Chip Efficiency
The dedicated chip provides high conversion efficiency with minimal heat generation.
Space-Saving Footprint
Dimensions fit easily into tight PCB layouts for portable electronic devices.
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4. 5PCS DC-DC Step Up Converter – Best for Low Input
5PCS DC-DC Step Down/Step Up Converter
Input 1.8V to 5V
Output 3.3V 100mA
Step up and down capable
Small module package
This unique converter steps up from 1.8V to 3.3V efficiently. It is ideal for low-power battery-powered projects needing voltage boosting.
Pros
- Handles input below output
- Low current requirement
- Perfect rating score
- Versatile voltage range
- Good for battery boost
Cons
- Limited current to 100mA
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The step-up capability allows use with single-cell batteries where input is lower than output. It delivers a steady 3.3V even when input drops near 1.8V.
Current is limited to 100mA which restricts use to sensors or low-power MCUs. It cannot drive high-current devices like motors or displays directly.
Perfect for wearables and simple IoT sensors requiring minimal power. This pack offers five reliable units for small-scale battery projects.
Battery Boost Capability
Accepts input as low as 1.8V enabling use with AA or button cells.
Low Power Output
Designed specifically for low current applications under 100mA load.
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5. Dorhea 7 Pack – Best Value Linear Regulator
Dorhea 7 Pack 3.3V DC-DC Buck Converter
Input 4.75V to 12V
Output 3.3V 0.8A
AMS1117 based
3-pin connection
Dorhea provides a cost-effective pack of linear regulators for steady power. Each unit delivers fixed 3.3V at 0.8A for reliable electronics operation.
Pros
- Seven units included
- Fixed 3.3V output
- Easy MCU connection
- Affordable price
- Overheat protection
Cons
- Load current limit strict
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The 3-pin design simplifies integration into various circuit boards. It supports multiple MCU boards and low-power sensor projects effectively.
Strict current limit means load must stay under 800mA to avoid damage. Overheat shutdown helps protect the device during unexpected current spikes.
Buyers needing multiple regulators for prototyping will appreciate the quantity. This pack offers a balanced choice for basic step-down needs.
Fixed Voltage Stability
Internal regulation ensures consistent 3.3V output regardless of input voltage.
Overheat Protection
Thermal shutdown activates to prevent damage under high temperature conditions.
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6. AMS1117-3.3 15pcs – Best Bulk Linear Pack
AMS1117-3.3 DC 4.75V-12V to DC 3.3V Voltage Regulator 15pcs
Input 4.75V to 12V
Output 3.3V 0.8A
Dynamic voltage control
Overheat and overcurrent protection
This pack offers fifteen units ensuring ample supply for extensive projects. It provides a stable 3.3V output with minimal voltage fluctuation when load changes.
Pros
- Fifteen units per pack
- 5.0-star rating
- Minimal voltage fluctuation
- Plug and play pins
- Built-in safety features
Cons
- Standard linear efficiency
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Dynamic voltage difference control reduces power consumption effectively in battery scenarios. The low dropout design ensures efficient operation near minimum input voltage.
Standard linear efficiency means higher heat at high loads compared to switching. Adequate spacing and ventilation help maintain stable performance during long runs.
Perfect for bulk needs like school labs or manufacturing runs requiring consistency. The safety features and reliable output make it a safe choice.
Dynamic Voltage Control
Adjusts impedance to minimize power consumption when input drops.
Plug and Play
VIN OUT and GND pins simplify rapid circuit connection and testing.
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7. 5PCS 3.3V Mini Buck Converter – Best Input Range
5PCS 3.3V Mini Buck Converter Board Regulator
Input 5V to 30V
Output 3.3V 1.8A
Reverse polarity mark
Switching frequency 1MHz
This buck module supports a vast input range up to 30V ideal for 24V systems. It delivers 1.8A ensuring sufficient power for many embedded electronics.
Pros
- Highest input voltage range
- High output current
- Compact PCB design
- Reverse polarity protection
- Five modules included
Cons
- Lower user rating score
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Reverse polarity marks help prevent accidental connection mistakes. This safety feature protects the module from damage during assembly.
User ratings vary suggesting possible quality inconsistencies in batch manufacturing. Always test output voltage under load to ensure stability before deployment.
Users needing to drop from 24V or 30V sources will find it useful. The compact design saves space on crowded PCBs effectively.
High Voltage Input
Accepts up to 30V making it suitable for industrial control circuits.
Reverse Polarity Mark
Visual indicator helps prevent incorrect wiring connections.
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8. 5pcs 3.3V Buck Converter – Best for Vehicle Power
5pcs 3.3V DC-DC Buck Converter
Input 4.5V to 30V
Output 3.3V 1.8A
Ready for Arduino
Clean power output
This module supports input from 4.5V to 30V making it versatile for batteries. It outputs stable 3.3V at up to 1.8A peak current.
Pros
- Wide input range
- High peak current
- Clean low ripple
- Solder and go ready
- Five pack value
Cons
- No rating data available
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Designed for 1.5MHz switching to keep output ripple under 30mV. This ensures clean power for microcontrollers and sensitive IoT sensors.
Lack of customer ratings means less social proof. However specs technical specs suggest robust performance for automotive and solar projects.
Installers in vehicles and solar setups will appreciate the range and stability. Each unit is tested before shipping ensuring readiness out of the box.
Solar and Vehicle Support
Input range supports batteries and vehicle power systems effectively.
Clean Power Output
Low ripple and high frequency protect sensitive electronic circuits.
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9. 10PCS 5V to 3.3V Buck Module – Best for 7V Inputs
10PCS 5V to 3.3V DC-DC Step Down Power Supply Buck Module
Input 4.5V to 7V
Output 3.3V 0.8A
Start limit voltage
Automatic adjustable boost
This pack delivers reliable 3.3V from 5V to 7V sources like battery packs. It features start limit voltage protection to prevent damage from low input.
Pros
- Perfect rating
- Ten units per pack
- Start limit protection
- Simple 3-pin design
- Fixed 3.3V output
Cons
- Narrow input range
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Ten units allow multiple builds without frequent reordering. Each module is tested for consistent 3.3V output under load.
Input range restricts use to lower voltage supplies. Ensure input voltage is at least 1V higher than output to maintain efficiency.
Buyers needing a bulk solution for low-voltage projects will find it efficient. The protection features add confidence for safety critical applications.
Start Limit Voltage
Built-in circuit prevents operation below safe input voltage thresholds.
Ten Unit Pack
Large quantity supports multiple prototypes or group projects.
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10. 3.3V Regulator 6pcs – Best MP1584EN Module
3.3V Regulator 6pcs Mini Reducer
Input 4.5V to 24V
Output 3.3V 1.8A
MP1584EN core
High switching frequency
This module uses the MP1584EN chip for robust efficiency and low heat. It handles high current output while staying compact at 17mm length.
Pros
- MP1584EN reliability
- High 1.8A output
- Very small footprint
- Low ripple noise
- Six units included
Cons
- Requires protection for inductive loads
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Low ripple and switching frequency ensure stable power for aircraft models and drones. Six units per pack offer great value for multiple prototypes.
Inductive loads may cause ripples that affect rear-stage chips. Adding Zener diodes and capacitors helps protect sensitive electronics during operation.
Aircraft model makers and high-efficiency users will appreciate this module. It combines top-tier specs with compact design and high current delivery.
MP1584EN Efficiency
Uses a proven power chip for reliable high current operation.
Small Size Fit
Tiny dimensions allow mounting in tight spaces on small circuit boards.
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Buying Guide – How to Choose the Best 5V to 3V Voltage Regulator
Selecting the right regulator depends on your input voltage, current needs, and efficiency requirements. Review these factors to ensure stable power delivery.
Input Voltage Range
Check the input range of the module to match your power source. Some models accept 4.5V to 30V while others accept only 4.75V to 12V. Mismatched voltage can damage the component or fail to regulate.
Always verify your battery or supply voltage falls within the module specifications before purchase.
Output Current Capacity
Ensure the regulator supports the maximum current your device requires. Switching modules often deliver 1.8A while linear ones might cap at 0.8A. Exceeding current limits causes voltage drops or failure.
Choose a module rated higher than your load needs to maintain stability under peak usage.
Efficiency and Heat
Switching regulators are generally more efficient than linear types especially at higher currents. This means less heat generation and longer battery life for portable devices. Linear regulators may require heatsinks for high loads.
Pick switching options for high power needs and linear options for simple low current tasks.
Physical Dimensions
Compact sizes are critical for wearables drones and tight PCB layouts. Modules under 18mm length fit into small enclosures easily. Measure your available space before selecting a module.
Smaller footprints offer more flexibility for portable projects and tight designs.
Output Ripple
Low ripple ensures clean power for sensitive analog sensors and ADCs. Look for ripple specs under 30mV for best performance. High ripple can cause noise in data readings.
Prioritize low ripple modules for electronics requiring precise measurements.
Protection Features
Overheat overcurrent and reverse polarity protection add safety layers. These features prevent damage during accidents or unexpected spikes. Ensure the regulator includes these protections for long-term reliability.
Always select units with built-in safety circuits for critical applications.
Connection Type
3-pin or screw terminal designs simplify wiring. Single row pins are easier to solder than solderless boards. Ensure the module matches your soldering skill level.
Simple connection types save time and reduce wiring errors.
Pack Quantity
Buying in packs saves cost and ensures spares for future projects. Ten or fifteen unit bundles offer better value per module. Consider how many units you might need.
Choose pack sizes that match your project volume and budget.
How to Use and Care for Your 5V to 3V Voltage Regulator
Connect the VIN pin to your input power source and GND to the negative rail. Ensure input voltage is higher than 3.3V to maintain regulation. Verify polarity before powering on to prevent short circuits.
For inductive loads like motors add a diode and capacitor to the output. This prevents voltage spikes that could damage sensitive electronics downstream. These components act as a safety buffer during load changes.
Monitor temperature during operation. If the module gets hot use a heat sink or add a small fan. High heat can reduce lifespan and output stability.
Frequently Asked Questions
Do 5V to 3V voltage regulators work with 24V inputs?
Yes many buck converters accept 24V inputs and output stable 3.3V. Look for modules with input ranges up to 30V to ensure compatibility. Always check the datasheet before connecting to high voltage sources.
Can I use a linear regulator instead of a buck converter?
Linear regulators are simpler but less efficient at higher currents. They dissipate excess power as heat. Use them for low current loads under 800mA where heat isn't a concern.
Why is my output voltage lower than 3.3V?
Output drops may occur due to high load current or insufficient input voltage. Verify the input is at least 1V above output. Also check for voltage drops along wiring connections.
How do I protect motors from voltage spikes?
Inductive loads create spikes when switched off. Add a flyback diode across the motor terminals and a capacitor across the regulator output. This suppresses noise and protects downstream electronics.
What is the maximum current these regulators support?
Most buck modules support up to 1.8A while linear types support up to 0.8A. Exceeding these limits causes overheating and output drop. Choose a module rated above your load current.
Do these regulators need external capacitors?
Most modules include necessary capacitors on the PCB. However adding extra capacitors improves stability for noisy loads. Follow the manufacturer guidelines for best results.
Final Thoughts on Choosing the Best 5V to 3V Voltage Regulator
This guide highlights ten top voltage regulators for stable 5V to 3V conversion. Top choices include compact buck modules for high efficiency and linear options for simplicity.
Prioritize input range and output current to match your project needs. Choose switching regulators for high power needs and linear for low-power applications.
Always check current listings to confirm availability and pricing before purchase. Reliable components ensure smooth operation and longevity for your electronic builds.