10 Pack 3 Pins AMS1117-3.3 DC 4.75V-12V to 3.3V Voltage Regulator
4.1Editor score
Simple 3-pin linear regulator design
Supports 4.75V to 12V input
0.8A max current for small projects
In this guide
Finding the right voltage regulator is crucial for powering sensitive electronics reliably. A good regulator ensures stable output despite input fluctuations or changing loads.
We analyzed ten top-rated modules based on efficiency, size, current capacity, and user feedback. This list covers both linear and switching options for diverse needs.
Each pick highlights key specs and ideal use cases. Prices fluctuate often, so check current listings before purchasing to ensure you get the best deal.
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 17.5mm size for tight spaces
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
5.0Editor score
5-30V input range with 1.8A output
Ultra-compact Mini360 footprint
Low ripple under 30mV for clean power
Top 10 Best 5V to 3V Voltage Regulator in 2026 Compared
This side-by-side comparison helps you quickly identify which regulator matches your voltage, current, and space requirements.
ProductsSpecificationsEditor scorePrice
Editor's Choice
5pcs 3.3V Buck Converter Module
Input: 4.5V to 24V
Output: 3.3V
Current: 1.8A max
Size: 17.5x12x4.5mm
4.6Editor score
Editor's Choice
10 Pack AMS1117-3.3
Input: 4.75V to 12V
Output: 3.3V fixed
Current: 0.8A max
Type: Linear Regulator
4.1Editor score
Best Premium
5PCS DC-DC Step Down Step Up
Input: 1.8V to 5V
Output: 3.3V
Current: 100mA max
Type: Buck Boost
5.0Editor score
3.3V Regulator 5pcs Mini Reducer
Input: 4.5V to 24V
Output: 3.3V
Current: 1.8A max
Size: 17.5×12.3×4.3mm
5.0Editor score
Dorhea 7 Pack 3.3V DC-DC Buck Converter
Input: 4.75V to 12V
Output: 3.3V fixed
Current: 0.8A max
Type: Linear AMS1117
4.2Editor score
AMS1117-3.3 DC 4.75V-12V
Input: 4.75V to 12V
Output: 3.3V fixed
Current: 800mA max
Accuracy: +/- 2%
5.0Editor score
5PCS 3.3V Mini Buck Converter Board
Input: 5V to 30V
Output: 3.3V
Current: 1.8A max
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
Current: 1.8A peak
Size: 17.5×12.3×4.3mm
10PCS 5V to 3.3V DC-DC Step Down
Input: 4.5V to 7V
Output: 3.3V
Current: 800mA max
Type: Linear AMS1117
5.0Editor score
3.3V Regulator 6pcs Mini Reducer
Input: 4.5V to 24V
Output: 3.3V
Current: 1.8A max
Type: Mini360 Buck
4.9Editor score
1. 5pcs 3.3V Buck Converter Module – Best Overall Power Efficiency
5pcs 3.3V Buck Converter Module DC 4.5-24V to 3.3V Voltage Regulator
Input: 4.5V to 24V
Output: 3.3V
Current: 1.8A max
Size: 17.5x12x4.5mm
This buck converter module stands out for its wide input range of 4.5V to 24V while delivering stable 3.3V output. It holds a strong 4.6 rating from users who praise its reliability in DIY projects.
Pros
- Wide input voltage range
- High current output capacity
- Compact PCB-friendly size
- Low output ripple voltage
- Great value 5-pack
Cons
- Requires protection for motors
- Not ideal for battery
We may earn a commission when you buy through this link, at no additional cost to you.
Its ability to supply up to 1.8A makes it suitable for powering microcontrollers and sensors without overheating. The low ripple under 30mV ensures clean power for sensitive electronics.
While excellent for mains-powered designs, inductive loads like motors need external protection diodes. Also, its switching nature might be less efficient for very low power battery applications.
For most hobbyists needing reliable step-down power, this module offers the best balance of performance and size. We recommend it for Arduino and ESP projects requiring stable 3.3V.
Wide Input Voltage Flexibility
Compatible with 5V 9V 12V and 24V supplies so you can use existing power sources without extra adapters.
Space Saving PCB Design
At just 17.5mm length it fits easily into narrow spaces typical of portable and embedded electronics builds.
We may earn a commission when you buy through this link, at no additional cost to you.
2. 10 Pack AMS1117-3.3 – Best Budget Linear 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 fixed
Current: 0.8A max
Type: Linear Regulator
This AMS1117-3.3 pack offers an affordable entry point for linear regulation. With a 4.1 rating it is trusted for small electronics needing simple stable power without complexity.
Pros
- Affordable 10-piece pack
- Simple 3-pin connection
- Overheat protection built-in
- Ideal for low noise apps
- Compatible with Arduino boards
Cons
- Limited to 12V input
- Less efficient than switching
We may earn a commission when you buy through this link, at no additional cost to you.
Its 0.8A output supports common microcontrollers like STM32 or ESP8266. The linear design produces minimal noise which benefits audio or analog sensor circuits.
Efficiency drops when input voltage exceeds output by much so it is best used with 5V or 9V sources. Higher inputs may cause heat without a heatsink.
For basic prototyping where cost and simplicity matter this pack is unbeatable. Keep it handy for Arduino projects that need clean 3.3V from 5V.
Simple Plug and Play
Three pins for input output and ground make wiring straightforward even for beginners with minimal circuit experience.
Thermal Protection Safety
Built-in overheat shutdown prevents damage if the module gets too hot during heavy current draw or poor ventilation.
We may earn a commission when you buy through this link, at no additional cost to you.
3. Mini Reducer Buck Converter – Premium Compact Power
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: 1.8A max
Size: 17.5×12.3×4.3mm
This Mini360 buck module achieves a perfect 5.0 rating thanks to its compact design and reliable performance. It handles 5V to 30V input making it versatile for various power sources.
Pros
- Perfect 5.0 user rating
- Mini360 ultra-small footprint
- High 1.8A current capacity
- Low ripple clean output
- Wide 5V to 30V input
Cons
- Inductive loads need protection
- Soldering wires required
We may earn a commission when you buy through this link, at no additional cost to you.
Delivering 1.8A output with less than 30mV ripple ensures stable power for demanding loads. Its size saves significant PCB space compared to larger regulators.
As with most switching regulators inductive loads like motors require extra filtering to avoid noise interference. Soldering wires may be needed since no headers are included.
For professional builds where space and reliability are critical this module is the top choice. It is ideal for drones wearables and compact IoT devices.
Ultra Compact Mini360 Form
Measuring only 17.5mm by 12.3mm it fits into tight enclosures where larger regulators simply cannot be installed.
High Efficiency Switching
Switching frequency around 1MHz keeps heat low and efficiency high even under full 1.8A load conditions.
We may earn a commission when you buy through this link, at no additional cost to you.
4. 5PCS DC-DC Step Down/Step Up – Low Current Flexible Option
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
Type: Buck Boost
This step-down/up converter handles inputs from 1.8V to 5V delivering stable 3.3V output regardless of battery state. It maintains a perfect 5.0 rating from satisfied users.
Pros
- Input below output voltage
- Perfect 5.0 rating
- Low cost 5-pack
- Handles battery discharge
- Small footprint module
Cons
- Only 100mA current limit
- Not for high loads
We may earn a commission when you buy through this link, at no additional cost to you.
The buck-boost topology allows operation even when input drops below 3.3V which is useful for battery-powered projects. Its small size suits wearable or remote sensors.
The 100mA current limit restricts use to low-power devices like microcontrollers in sleep mode. High current loads will not work with this module.
Use this when battery voltage varies or drops below target. It is ideal for remote sensors where power efficiency and input flexibility matter most.
Buck Boost Versatility
Works when input is higher or lower than output making it perfect for single-cell battery applications.
Low Power Target
With only 100mA output it is designed for sensors and logic circuits that draw minimal current continuously.
We may earn a commission when you buy through this link, at no additional cost to you.
5. Dorhea 7 Pack AMS1117 – Reliable Linear Pack
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 fixed
Current: 0.8A max
Type: Linear Regulator
Dorhea offers this AMS1117-3.3 pack designed for stable 3.3V output from 4.75V to 12V input. With a 4.2 rating it is a dependable choice for standard embedded systems.
Pros
- Affordable 7-pack quantity
- 3-pin easy wiring
- Overheat protection included
- Fits MCU development
- Simple linear regulation
Cons
- Limited to 12V input
- Not for high current
We may earn a commission when you buy through this link, at no additional cost to you.
Its 0.8A output supports most microcontroller boards without additional components. The 3-pin layout simplifies connections on breadboards or perfboards.
As a linear regulator it generates more heat than switching types when input is much higher than output. Ensure adequate airflow or add a small heatsink.
Great for workshops needing multiple regulators at low cost. Use it for logic level shifting or powering low current sensors from 5V or 9V.
Stable Linear Output
Produces minimal electrical noise which is beneficial for analog circuits and audio signal paths.
Thermal Safety Features
Overheat shutdown prevents chip failure when used under heavy load or in warm environments.
We may earn a commission when you buy through this link, at no additional cost to you.
6. AMS1117-3.3 15pcs – Best Large Volume Pack
AMS1117-3.3 DC 4.75V-12V to DC 3.3V Voltage Regulator 15pcs
Input: 4.75V to 12V
Output: 3.3V
Current: 800mA max
Accuracy: +/- 2%
This 15-piece pack of AMS1117-3.3 regulators maintains a perfect 5.0 user rating. It is perfect for teams or makers building multiple identical circuits.
Pros
- Excellent 5.0 rating
- 15-piece bulk quantity
- Wide input voltage
- Low dropout voltage
- Overcurrent protection
Cons
- Linear heat at high load
- Limited to 12V input
We may earn a commission when you buy through this link, at no additional cost to you.
The +/- 2% output accuracy ensures consistent performance across all units. Low dropout voltage of 1V makes it efficient even when input approaches output.
As a linear device it dissipates excess voltage as heat so avoid high differential inputs. It is best suited for small current loads under 800mA.
Ideal for prototyping workshops needing many units at low cost. Use these for small PCB builds where space and simplicity are valued.
Low Dropout Efficiency
Requires only 1V headroom to regulate properly saving battery life when voltage drops near 3.3V.
Robust Safety Protection
Built-in overcurrent and overheat safeguards protect your circuits from damage during short circuits or overloads.
We may earn a commission when you buy through this link, at no additional cost to you.
7. Mini Buck Converter Board – High Input Range Option
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 max
Size: 0.67×0.24×0.16in
This module supports input voltages up to 30V which is rare in this price range. It delivers 1.8A output from a compact black PCB with reverse polarity markings.
Pros
- Up to 30V input support
- High 1.8A output
- Compact PCB design
- Reverse polarity marked
- Low ripple voltage
Cons
- Lower user rating
- Needs careful wiring
We may earn a commission when you buy through this link, at no additional cost to you.
Its 3.4 rating suggests mixed experiences possibly due to soldering needs or lack of headers. However the high current capacity makes it capable for heavier loads.
Ensure input voltage is stable since high voltage may stress components if not properly filtered. Reverse polarity markings help prevent wiring mistakes.
Use when your power source exceeds 24V or 24V batteries. It is suitable for industrial or vehicle projects needing robust step-down power.
Extended Input Voltage
Accepts up to 30V input making it ideal for 24V systems or industrial power supplies.
Compact PCB Footprint
Measuring under 0.7 inches long it fits easily into space-constrained embedded system enclosures.
We may earn a commission when you buy through this link, at no additional cost to you.
8. 5pcs 3.3V DC-DC Buck Converter – Wide Input Buck
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 peak
Size: 17.5×12.3×4.3mm
This converter offers a broad input range from 4.5V to 30V with peak output of 1.8A. It is rated as pre-tested ensuring functional units upon arrival.
Pros
- 4.5V to 30V input
- 1.8A peak current
- Clean low ripple output
- Compact small size
- Pre-tested units
Cons
- Rating data not available
- Solder wires required
We may earn a commission when you buy through this link, at no additional cost to you.
Its compact size and low ripple make it suitable for sensitive electronics. The wide input range supports battery and mains applications alike.
Without user ratings it is hard to assess long-term reliability but specs suggest solid performance. Soldering connections adds installation steps.
Choose this for projects needing flexible input power and high current in a small footprint. Good for vehicle or solar-powered IoT setups.
Pre-Tested Reliability
Each unit is tested before shipping reducing risk of receiving defective components in your batch.
Low Ripple Clean Power
Output ripple under 30mV at 1.5MHz ensures stable voltage for microcontroller logic and sensors.
We may earn a commission when you buy through this link, at no additional cost to you.
9. 10PCS AMS1117 Buck Module – Simple Step Down Pack
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 max
Type: Linear Regulator
This AMS1117-3.3 pack has a perfect 5.0 rating indicating high customer satisfaction. Designed for inputs from 4.5V to 7V it simplifies 5V to 3.3V conversion.
Pros
- Perfect 5.0 user rating
- 10-pack convenience
- Wide input voltage
- Fixed 3.3V output
- Overheat protection
Cons
- Limited to 7V input
- Linear efficiency low
We may earn a commission when you buy through this link, at no additional cost to you.
The 0.8A output meets needs of most low power microcontrollers. Its fixed output voltage removes need for adjustable trimpots or resistors.
Efficiency is lower since excess voltage becomes heat limiting battery applications. Keep input voltage close to 5V for best thermal performance.
Ideal for Arduino or ESP8266 projects where simplicity matters. Use this pack when you need reliable 3.3V from 5V sources.
Fixed Output Simplicity
No need to tune resistors as output is factory set to stable 3.3V ready to use.
High User Satisfaction
Perfect 5.0 rating shows consistent quality and reliability across units purchased.
We may earn a commission when you buy through this link, at no additional cost to you.
10. Mini Reducer MP1584EN – High Current Buck Converter
3.3V Regulator 6pcs Mini Reducer DC 4.75-23V 5V 12V Buck to 3.3V Buck Converter Board 1.8A Output Mini360 Small Size Aircraft Model MP1584EN Power Module
Input: 4.5V to 24V
Output: 3.3V
Current: 1.8A max
Type: MP1584EN Buck
This MP1584EN buck module earns a 4.9 rating for its reliable high current performance. It supports inputs up to 24V with compact PCB-friendly dimensions.
Pros
- Very high 4.9 rating
- Up to 1.8A output
- Small Mini360 size
- Low ripple voltage
- Wide input range
Cons
- Inductive load protection
- Soldering required
We may earn a commission when you buy through this link, at no additional cost to you.
Delivering 1.8A with less than 30mV ripple makes it great for motor controllers or multi-sensor arrays. Its small size saves valuable PCB area.
Inductive loads require external protection diodes to avoid back EMF damage. Solder wires directly for permanent installation since no headers included.
Choose this for power-heavy 3.3V projects needing efficiency and low noise. Perfect for drones robotics and advanced IoT prototypes.
High Current Efficiency
Supports 1.8A output efficiently minimizing heat compared to linear regulators at similar loads.
Compact Board Design
Fits into tight spaces like aircraft or wearable electronics due to Mini360 form factor.
We may earn a commission when you buy through this link, at no additional cost to you.
Buying Guide – How to Choose the Best 5V to 3V Voltage Regulator
Selecting the right regulator depends on input voltage current needs and application type. Understanding these factors ensures reliable and efficient power delivery.
Input Voltage Range
Check your power source voltage before buying. Most regulators support 5V to 24V or up to 30V input. Choose one matching your battery or supply to avoid damage.
Always ensure input voltage stays within specified limits for safe operation and longevity.
Output Current Capacity
Calculate total current draw of your circuit. If load exceeds regulator rating it may overheat or fail. Select a unit with at least 20% more capacity.
For most microcontrollers 800mA to 1.8A is sufficient. Higher current needs require robust heat dissipation.
Linear vs Switching Type
Linear regulators like AMS1117 are simple and low noise but inefficient at high voltage differences. Switching buck converters are more efficient but add complexity.
Choose switching for battery power or high voltage inputs. Use linear for noise-sensitive circuits like audio.
Output Voltage Accuracy
Stable output voltage ensures reliable microcontroller operation. Look for regulators with tight tolerance like +/- 2% or better for critical applications.
Poor regulation can cause brownouts or logic errors in digital circuits.
Package Size and Mounting
Measure available space on your PCB or enclosure. Modules range from tiny 10mm sizes to larger boards with heat sinks.
Smaller sizes suit wearables but may limit current capacity. Consider thermal needs too.
Heat Dissipation Needs
Higher voltage drops create more heat especially in linear regulators. Ensure airflow or add heatsinks if operating near max current.
Poor cooling leads to thermal shutdown or damage over time.
Inductive Load Protection
Motors and relays generate voltage spikes. Add diodes and capacitors when using regulators with inductive loads to prevent circuit damage.
Many buck modules warn about this requirement in product details.
Pack Quantity and Price
Buying multiple units often saves money. Ensure the pack size matches your project needs to avoid waste.
Compare price per unit but prioritize quality and reliability.
How to Use and Care for Your 5V to 3V Voltage Regulator
Connect input to your power source and output to your circuit. Ensure correct polarity with positive to VIN and ground to GND pins.
Add capacitors near input and output pins to reduce noise. Use 10uF ceramic capacitors for most applications to stabilize voltage.
Avoid placing regulators near heat-generating components. Ensure airflow or heatsinks if operating continuously at high current load.
Frequently Asked Questions
Can I use a 5V to 3.3V regulator for ESP32 modules?
Yes many regulators listed support 5V input and output 3.3V suitable for ESP32. Ensure current rating exceeds ESP32 peak draw of 500mA.
What is the difference between linear and switching regulators?
Linear regulators are simpler and quieter but waste voltage as heat. Switching converters are more efficient but add noise and complexity to design.
Do I need capacitors with these regulators?
Yes most require capacitors near input and output pins for stability. Use at least 10uF ceramic caps for best performance and noise reduction.
Can these regulators handle 24V input?
Yes switching buck modules with 24V input ratings work well. Check each product specs since AMS1117 units are limited to 12V input maximum.
How do I prevent overheating on linear regulators?
Add a small heatsink and ensure airflow around the component. Also keep voltage differential low by using closest input voltage possible.
Are these regulators suitable for solar panels?
Yes buck modules handle variable input voltage from solar panels well. Ensure input range covers expected panel voltage under varying sunlight.
Final Thoughts on Choosing the Best 5V to 3V Voltage Regulator
Our top picks include efficient buck modules for most projects and reliable linear options for simple circuits. Each offers unique strengths based on needs.
Prioritize input range and current capacity to match your power source and load. Efficiency matters most for battery-powered devices.
Prices and availability change frequently so verify current listings before purchase to ensure you get the best deal available.