10 Pack 3 Pins AMS1117-3.3 DC 4.75V-12V to 3.3V Voltage Regulator
4.1Editor score
Affordable 10 pack
Simple pin connection
Built-in overheat protection
In this guide
Finding the right voltage regulator is essential for powering microcontrollers and sensors safely. A good module ensures stable output without overheating or damaging sensitive components.
We analyzed ten highly rated products based on efficiency, size, current capacity, and customer feedback. Each option offers unique features for different project requirements.
Each pick highlights key specs and real-world performance. Note that prices and availability may change over time, so verify details before purchasing.
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
High current output capacity
Compact space-saving design
3.3V Regulator 6pcs Mini Reducer DC 4.75-23V 5V 12V Buck to 3.3V Buck Converter Board
4.9Editor score
Ultra small footprint
High switching frequency
Stable low ripple output
Top 10 Best 5V to 3V Voltage Regulator in 2026 Compared
The following table provides a side-by-side comparison of all ten selected voltage regulator modules. It highlights critical specifications to help you quickly identify the right fit.
ProductsSpecificationsEditor scorePrice
Editor's Choice
5pcs 3.3V Buck Converter Module
Input 4.5V to 24V
Output 3.3V
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
Max Current 0.8A
3 Pin design
4.1Editor score
Best Premium
5PCS DC-DC Step Down/Step Up
Input 1.8V to 5V
Output 3.3V
Max Current 100mA
Step up down capable
5.0Editor score
3.3V Regulator Mini Reducer
Input 4.5V to 24V
Output 3.3V
Max Current 1.5A
Size 17.5×12.3×4.3mm
5.0Editor score
Dorhea 7 Pack AMS1117
Input 4.75V to 12V
Output 3.3V
Max Current 0.8A
3 Pin design
4.2Editor score
AMS1117-3.3 15pcs
Input 4.75V to 12V
Output 3.3V
Max Current 0.8A
Voltage accuracy 2 percent
5.0Editor score
5PCS 3.3V Mini Buck Converter
Input 5V to 30V
Output 3.3V
Max Current 1.8A
Size 0.67×0.24×0.16 inches
3.4Editor score
5pcs 3.3V DC-DC Buck
Input 4.5V to 30V
Output 3.3V
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
Max Current 0.8A
Automatic boost limit
5.0Editor score
3.3V Regulator 6pcs Mini
Input 4.5V to 24V
Output 3.3V
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 DC 4.5-24V to 3.3V Voltage Regulator
Wide voltage range input
High 1.8A output
Ultra small footprint
Low ripple output
This 5 pack module offers an excellent balance of performance and versatility with a 4.5V to 24V input range and a stable 3.3V output. It boasts a high 1.8A current capacity suitable for demanding microcontroller applications and features a tiny footprint ideal for tight enclosures.
Pros
- Handles wide input voltages
- Delivers high current
- Very compact size
- Low output ripple
- Great value 5 pack
Cons
- Requires protection for motors
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Its switching frequency between 1MHz and 1.5MHz ensures clean power with ripple under 30mV protecting sensitive electronics from noise. The modules are designed for hobbyists needing multiple units for prototyping or expanding complex embedded system layouts efficiently.
While highly capable users must add diodes or capacitors when driving inductive loads like servos to prevent potential damage from back EMF or ripple spikes. This extra step is a minor trade-off for the high efficiency and wide compatibility offered here.
Recommended for makers building multiple circuits or needing a reliable power source for Arduino and STM32 boards this pack delivers great value. It is an ideal choice for anyone prioritizing stability and space savings in portable or DIY projects.
Wide Voltage Compatibility
Compatible with 5V 9V 12V and 24V power supplies ensuring flexibility across different battery and adapter types.
Compact Design
Measuring just 17.5x12x4.5mm it fits easily into narrow spaces of embedded or portable electronics projects.
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2. 10 Pack AMS1117-3.3 – Best Budget 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
Current 0.8A
3 Pin easy connect
This 10 pack of AMS1117-3.3 regulators provides a cost effective solution for linear voltage regulation projects requiring stable 3.3V power. Each unit supports input voltages between 4.75V and 12V delivering up to 0.8A of current reliably.
Pros
- Affordable 10 pack
- Simple 3 pin design
- Fits many microcontrollers
- Overheat protection included
Cons
- Lower current than buck modules
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The simple dual panel design with 2 pin single row inputs makes soldering and connecting to MCUs extremely straightforward for beginners. It is widely used in Arduino and STM32 applications where low noise and simplicity are more critical than high efficiency.
Since it is a linear regulator it dissipates excess voltage as heat so it may not be ideal for large voltage drops or high current demands. The built in overheat shutdown circuit helps prevent damage but users should still ensure adequate ventilation during use.
Perfect for prototyping large projects needing many regulators or for low power sensor nodes this pack offers unbeatable value. It is a top choice for hobbyists seeking simplicity and affordability without sacrificing essential safety features.
Wide Compatibility
Suitable for Arduino UNO MSP430 STM32 and other 3.3V low power consumption microcontroller development boards.
Overheat Protection
Built-in shutdown circuit protects the chip from damage due to abnormal working conditions or overheating.
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3. 3.3V Regulator 6pcs Mini – Best Premium Voltage Regulator
3.3V Regulator 6pcs Mini Reducer DC 4.75-23V 5V 12V Buck to 3.3V Buck Converter Board
Input 4.5V to 24V
Output 3.3V
Current 1.8A
Tiny 17x11x3.6mm size
This premium 6 pack features the ultra compact MP1584EN buck converter delivering robust performance with a tiny footprint perfect for drones and wearables. It accepts inputs from 4.5V to 24V and provides a stable 3.3V output with up to 1.8A of current.
Pros
- Ultra small dimensions
- High switching frequency
- Low ripple output
- High current capacity
Cons
- Protective components needed for motors
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The 1.5MHz switching frequency ensures efficient power conversion and minimal heat generation even under load. Its output ripple is kept under 30mV ensuring clean power for sensitive sensors and logic circuits in portable or space constrained applications.
Users should note that inductive loads like motors require additional Zener diodes or capacitors to suppress ripples that could affect rear stage chips. This precaution is standard for buck converters but adds slight complexity for certain high load applications.
For advanced hobbyists and professionals needing high efficiency and minimal board space this set is an outstanding choice. It excels in aircraft models IoT devices and other projects where every millimeter counts.
High Efficiency
Switching frequency typically 1MHz ensures efficient conversion and low heat generation during extended operation.
Tiny Size
At 17x11x3.6mm it is one of the smallest available modules for tight PCB layouts and portable electronics.
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4. 5PCS Step Down/Up Converter – Best for Low Power Projects
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
Current 100mA max
Step up and down
These versatile DC-DC converters stand out by supporting both step down and step up functionality allowing use with inputs as low as 1.8V up to 5V. Each module outputs a steady 3.3V ideal for battery powered projects where voltage may fluctuate.
Pros
- Steps up and down
- Works with 1.8V
- Tiny low power
- Perfect for sensors
Cons
- Very low current limit
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While the maximum current is limited to 100mA it is sufficient for low consumption sensors microcontrollers or LED indicators. This makes them an excellent choice for remote monitoring units or wearables where efficiency and input flexibility are key.
The low current rating means they are not suitable for driving motors or high power modules. However for simple logic circuits or radio modules this range provides reliable performance without needing multiple battery types.
Ideal for designers needing flexibility in battery configurations this set ensures stable power even as batteries deplete. It is highly recommended for small scale low energy applications requiring consistent voltage regardless of input variations.
Flexible Input
Accepts voltages from 1.8V up to 5V making it compatible with various battery chemistries and configurations.
Low Power Usage
Designed for low consumption circuits ensuring longer battery life in portable or remote devices.
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5. 3.3V Regulator 5pcs Mini – Best Compact 3.3V 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
Input 4.5V to 24V
Output 3.3V
Current 1.5A
Size 17.5×12.3×4.3mm
This 5 pack of Mini360 based modules offers reliable buck conversion with a wide input range and compact form factor ideal for portable electronics. It supports inputs from 4.5V to 24V and delivers up to 1.5A of steady 3.3V output.
Pros
- Very small dimensions
- Wide input voltage
- High current output
- Stable low ripple
Cons
- Inductive loads need protection
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Its ripple is maintained below 30mV with a switching frequency of up to 1.5MHz ensuring clean power for sensitive components. The size fits easily into tight layouts making it perfect for handheld devices or embedded control systems.
When driving motors or servos users must add capacitors or Zener diodes to protect the rear stage from ripple or back EMF. This is a standard precaution for switching regulators and does not diminish their overall value.
Great for hobbyists needing multiple robust converters for different projects this set balances size and performance effectively. It is highly recommended for applications requiring stable power in space constrained environments.
High Current Capability
Capable of delivering up to 1.5A output current meeting the needs of most microcontroller and sensor setups.
Low Output Ripple
Output ripple less than 30mV ensures clean and stable power for sensitive electronic components.
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6. Dorhea 7 Pack AMS1117 – Best for Simple Prototyping
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
Current 800mA
3 Pin design
This 7 pack of AMS1117-3.3 regulators provides a convenient linear solution for low to moderate current applications requiring simple connections. Each module features a 3 pin layout that simplifies integration into various development boards and custom circuits.
Pros
- Easy to solder
- Overheat protection
- Stable output
- Affordable 7 pack
Cons
- Limited to 800mA
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It includes built-in overheat and overcurrent protection ensuring safe operation even under unexpected load conditions. The fixed 3.3V output is ideal for powering MCUs like STM32 or MSP430 without complex adjustment.
The current limit of 800mA may be restrictive for projects needing higher power but it works well for logic boards and sensors. Users should ensure adequate heatsinking if operating near the limit to avoid thermal shutdown.
Perfect for beginners or educational kits this pack offers straightforward reliability at a budget-friendly price. It is a practical choice for projects prioritizing ease of use over switching efficiency.
Easy Connection
The 3 pin design simplifies wiring and makes it easy to connect to development boards directly.
Safety Features
Built-in overheat and overcurrent protection prevent chip damage due to abnormal working conditions.
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7. AMS1117-3.3 15pcs – Best for Large Scale Kits
AMS1117-3.3 DC 4.75V-12V to DC 3.3V Voltage Regulator 15pcs
Input 4.75V to 12V
Output 3.3V
Current 800mA
15 pieces value
This bulk 15 piece pack is perfect for workshops or educational labs needing multiple linear regulators for various projects. Each unit stabilizes input voltages from 4.75V to 12V down to a consistent 3.3V with an accuracy of ±2 percent.
Pros
- 15 piece bulk pack
- Stable output voltage
- Built-in overheat protection
- Wide application range
Cons
- High heat under load
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It supports up to 800mA current and features dynamic voltage difference control to minimize power consumption. The overheat protection ensures longevity even if devices are pushed near their limits in demanding scenarios.
As a linear regulator it generates heat when there is a large difference between input and output voltages. Adequate ventilation or a heatsink is recommended for extended operation to avoid triggering the thermal shutdown.
Ideal for bulk prototyping or school projects this set offers reliable performance at a very low unit cost. It is best suited for low current applications where simplicity and safety are prioritized.
Voltage Accuracy
Ensures minimal voltage fluctuation when load changes with an output voltage accuracy of ±2 percent.
Battery Friendly
Low dynamic voltage difference control reduces power consumption making it suitable for battery powered devices.
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8. 5PCS 3.3V Mini Buck – Best for High Input Range
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
Current 1.8A
Small PCB board
This 5 pack of buck modules supports a wide input range up to 30V making it useful for vehicles or higher voltage battery systems. It provides a stable 3.3V output with a peak current capacity of 1.8A for versatile power needs.
Pros
- High 30V input
- Reverse polarity mark
- Low ripple output
- 5 pack convenience
Cons
- Low rating feedback
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The PCB includes a reverse polarity mark to help prevent connection errors and protect the circuit from accidental short circuits. Switching frequency typically sits at 1MHz ensuring low ripple for sensitive electronics.
User feedback suggests lower reliability compared to higher rated alternatives so extra care is needed during installation. It is best suited for non-critical applications where budget is a primary concern and input voltage varies.
For projects requiring high voltage tolerance this set offers a practical solution at a low cost. It is recommended for basic prototyping where safety measures are already in place to handle voltage spikes.
High Input Range
Supports inputs from 5V up to 30V making it compatible with many vehicle and battery power systems.
Safety Markings
The PCB board features a reverse polarity mark to help protect the circuit from connection errors.
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9. 5pcs 3.3V DC-DC Buck – Best for 12V/24V Systems
5pcs 3.3V DC-DC Buck Converter, 4.5V-30V to 3.3V Step Down Regulator
Input 4.5V to 30V
Output 3.3V
Current 1.8A
Fits 12V/24V
This 5 pack offers a wide input range suitable for vehicle batteries solar panels and industrial supplies while maintaining a stable 3.3V output. Each module fits tight layouts with dimensions of 17.5×12.3×4.3mm and delivers up to 1.8A of current.
Pros
- Wide input voltage
- Ultra compact size
- Clean low ripple
- Ready for IoT
Cons
- New product unknown quality
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Its low ripple output below 30mV ensures clean power for microcontrollers like ESP32 and sensitive sensors in IoT devices. The compact size makes it ideal for wearables drones and portable electronic assemblies.
Being a newer product there is limited user feedback to confirm long-term reliability compared to established models. However the technical specifications align with proven designs used in similar portable applications.
Recommended for developers prototyping IoT or vehicle electronics this set provides solid specs at a competitive price. It is a good choice for projects needing wide input compatibility without sacrificing performance.
Vehicle Compatibility
Works with 12V and 24V batteries solar panels and vehicle power systems for automotive electronics.
IoT Ready
Designed to meet the needs of ESP32 Raspberry Pi and other common IoT development platforms.
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10. 10PCS 5V to 3.3V DC-DC – Best for Simple 5V Drops
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
Current 800mA
Auto limit boost
This 10 piece pack provides a straightforward step down solution for circuits needing to drop 5V to 3.3V with inputs up to 7V. Each board delivers 800mA and includes an automatic adjustable boost start limit voltage for safer operation.
Pros
- Wide range 10 pack
- Simple 4.5 to 7V
- Adjustable start limit
- Affordable price
Cons
- Limited to 800mA
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The AMS1117 based design ensures stable output suitable for sensors and microcontrollers in low voltage environments. It is particularly useful for projects powered by USB or low voltage adapters where the input stays under 7V.
Users should avoid exceeding the operating voltage range to prevent damage to the module. While effective for small loads it is not intended for higher current requirements exceeding its 800mA limit.
Great for schools or hobbyists needing multiple units for 5V to 3.3V conversion this set offers simplicity and reliability. It is a practical option for basic electronics tasks requiring consistent and safe voltage conversion.
Adjustable Start Limit
Includes automatic adjustable boost start limit voltage to protect against unexpected voltage spikes.
Simple Input
Designed for inputs between 4.5V and 7V simplifying power supply choices for small projects.
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Buying Guide – How to Choose the Best 5V to 3V Voltage Regulator
Selecting the right regulator involves considering input range output current size and efficiency to match your specific project needs.
Input Voltage Range
Ensure the module accepts your source voltage such as 5V 9V 12V or higher without failing. Many buck converters support 4.5V to 24V or more making them versatile for various power supplies.
Match the regulator range to your battery or adapter output to avoid damage or inefficient power loss.
Output Current Capacity
Check that the regulator can supply enough current for your microcontrollers sensors and accessories combined. Higher current units like 1.8A handle more loads than 800mA linear models.
Calculate total device draw and choose a regulator with a safety margin to ensure stable performance.
Efficiency and Heat
Buck converters are more efficient than linear regulators especially when dropping from 12V to 3.3V. Linear types dissipate excess voltage as heat requiring careful thermal management.
Prioritize switching regulators for battery powered or high input projects to minimize heat and extend battery life.
Physical Size
Look for compact dimensions like 17x12x4mm if your enclosure is small. Miniature modules fit better in portable or wearable electronics.
Verify that the footprint allows for necessary soldering and wiring without overcrowding the PCB.
Output Stability
Select regulators with low ripple and stable output voltage to protect sensitive components from noise. Look for ripple specs under 30mV for best results.
Stable output ensures reliable operation of logic boards and sensors during varying load conditions.
Protection Features
Modules with overheat and overcurrent protection add safety for long term reliability and prevent damage. Built-in circuits shut down the regulator if temperatures get too high.
Always choose products with protection features to avoid failures during accidental short circuits or overloads.
Pack Quantity
Buying in packs of 5 10 or 15 reduces per unit cost and provides spares for future projects. This is ideal for prototyping or teaching environments.
Consider how many units you need now and in the future to avoid frequent reordering.
Application Type
Linear regulators are best for low noise applications while buck types suit high efficiency needs. Match the choice to whether your project prioritizes noise or battery life.
Use buck regulators for motors and linear for audio or sensitive sensor inputs.
How to Use and Care for Your 5V to 3V Voltage Regulator
Connect the input to your power source ensuring polarity matches the VIN GND and OUT pins correctly. Most modules include clear markings to simplify wiring for beginners.
Add capacitors or diodes if driving inductive loads like motors to prevent ripple from affecting connected chips. This step is crucial for stable operation with servos or DC motors.
Store modules in a cool dry place away from moisture to preserve their lifespan. If using near high heat ensure adequate ventilation to avoid triggering thermal protection.
Frequently Asked Questions
Can I use a 5V to 3V voltage regulator for Arduino boards?
Yes most modules support 3.3V output required by many microcontrollers. The AMS1117 based packs are commonly used with Arduino UNO MEGA and STM32 boards without issues. Ensure the regulator can provide enough current for your shields and sensors.
What is the difference between linear and buck regulators?
Linear regulators are simple and quiet but inefficient and generate heat when dropping voltage. Buck converters use switching to reduce power loss and heat making them better for battery or high voltage drop applications.
How do I protect motors from voltage regulator ripple?
Add a capacitor across the motor terminals and a diode in parallel to suppress back EMF. This reduces ripple spikes that could disturb sensitive logic circuits powered by the same regulator.
Do these modules work with 12V input power supplies?
Most buck modules support up to 24V input so 12V is safe. Always verify the specific input range before connecting to avoid damaging the unit. Linear regulators may be limited to 12V input.
Why does my regulator get hot during use?
Heat is normal especially with linear regulators dropping from high voltage. Buck types run cooler but still generate some heat at high currents. Use a small heatsink if needed to maintain performance.
Is it safe to solder wires directly to these boards?
Yes most modules are designed with solder pads for wires or header pins. Ensure you use appropriate wire gauge for the current your project draws to avoid overheating.
Final Thoughts on Choosing the Best 5V to 3V Voltage Regulator
This guide highlights ten versatile options ranging from linear regulators to compact buck converters tailored for various project demands. The top three picks offer strong value for budget cost and efficiency needs.
Prioritize input range current capacity and heat management when selecting a module for your microcontroller setup. For portable electronics buck types provide better battery life and smaller profiles.
Always verify current availability and pricing since offers may change over time. Choosing the right regulator ensures stable power and longevity for your electronic projects.