10 Pack 3 Pins AMS1117-3.3 DC 4.75V-12V to 3.3V Voltage Regulator
4.1Editor score
Supports 4.75V to 12V input
Fixed 3.3V output at 0.8A
Simple 3-pin design for easy wiring
Includes overheat and overload protection
In this guide
Choosing the right voltage regulator is essential for powering sensitive electronics like microcontrollers and sensors reliably. A good regulator ensures stable output despite input fluctuations, protecting your valuable components from damage during operation.
We compared ten highly rated products based on input range, output current, size, and user feedback. Our analysis focuses on both switching buck converters and linear regulators to cover diverse project requirements.
Each pick highlights key specifications and real-world performance notes to help you decide quickly. Keep in mind that prices and availability change frequently, so verify current details before ordering your supplies.
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
Outputs stable 3.3V up to 1.8A
Compact 17.5x12x4.5mm size
Low ripple under 30mV for clean power
5pcs 3.3V DC-DC Buck Converter, 4.5V-30V to 3.3V Step Down Regulator
Input 4.5V to 30V wide range
Peak output current up to 1.8A
Ultra-compact 17.5×12.3×4.3mm
Clean power for sensitive microcontrollers
Top 10 Best 5V to 3V Voltage Regulator in 2026 Compared
The following table provides a side-by-side overview of all ten selected regulators. It highlights key specifications like input range, output current, and physical dimensions to facilitate quick comparison.
ProductsSpecificationsEditor scorePrice
Editor's Choice
5pcs 3.3V Buck Converter Module DC 4.5-24V to 3.3V Voltage Regulator
Input: 4.5V to 24V
Output: 3.3V at 1.8A
Size: 17.5x12x4.5mm
Type: Switching Buck Converter
4.6Editor score
Editor's Choice
10 Pack 3 Pins AMS1117-3.3 DC 4.75V-12V to 3.3V Voltage Regulator
Input: 4.75V to 12V
Output: 3.3V at 0.8A
Size: Standard TO220 Package
Type: Linear Regulator
4.1Editor score
Best Premium
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 at 100mA
Size: Ultra Small Module
Type: Buck Boost Converter
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)
Input: 4.5V to 24V
Output: 3.3V at 1.5A
Size: 17.5×12.3×4.3mm
Type: Mini Buck Converter
5.0Editor score
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 at 0.8A
Size: TO220 Linear Package
Type: Linear Regulator Module
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
Size: TO220 Standard Package
Type: LDO Linear Regulator
5.0Editor score
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 at 1.8A
Size: 0.67×0.24×0.16in
Type: Switching Buck Board
3.4Editor score
5pcs 3.3V DC-DC Buck Converter, 4.5V-30V to 3.3V Step Down Regulator
Input: 4.5V to 30V
Output: 3.3V at 1.8A
Size: 17.5×12.3×4.3mm
Type: High Current Buck
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 at 0.8A
Size: Compact Module Style
Type: Buck/Boost Hybrid
5.0Editor score
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(3.3 Volts)
Input: 4.5V to 24V
Output: 3.3V at 1.8A
Size: 17x11x3.6mm
Type: MP1584EN Buck Module
4.9Editor score
1. 5pcs 3.3V Buck Converter Module DC 4.5-24V to 3.3V Voltage Regulator – Best Overall Regulator
5pcs 3.3V Buck Converter Module DC 4.5-24V to 3.3V Voltage Regulator
Wide input voltage range
1.8A max current output
Compact dimensions for tight spaces
Low output ripple under 30mV
This buck converter module stands out as a top choice for general electronics projects needing reliable power. With a 4.6 rating, it offers a balance of performance and price that appeals to hobbyists.
Pros
- Handles inputs from 4.5V to 24V safely
- Delivers stable 3.3V at high currents
- Very small footprint on PCB layouts
- Includes diode protection for motors
- Great value with five units in pack
Cons
- Requires external diode for inductive loads
- Small solder pads for quick prototyping
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Its ability to accept inputs from 4.5V all the way to 24V makes it incredibly versatile for battery or mains powered systems. The low ripple ensures microcontrollers receive clean power.
While the small size is great for space constraints, it can make soldering wires a bit tricky for beginners. You might want to use header pins for easier connection.
Anyone building multiple circuits or needing a compact power solution should buy this. It provides the best all-round experience without breaking the budget.
Flexible Input Voltage Support
This module works with a wide range of power sources including 5V, 9V, 12V, and 24V supplies without additional conversion.
High Efficiency and Clean Power
The switching design ensures low heat generation and output ripple stays under 30mV for sensitive components.
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2. 10 Pack 3 Pins AMS1117-3.3 – Best Budget Regulator
10 Pack 3 Pins AMS1117-3.3 DC 4.75V-12V to 3.3V Voltage Regulator
4.75V to 12V input range
Fixed 3.3V output voltage
Standard 0.8A current limit
Simple three pin design
If you need a basic regulator on a tight budget, this AMS1117 pack is ideal. It holds a 4.1 rating and is widely used for standard stepping down needs.
Pros
- Extremely affordable with ten units included
- Compatible with standard linear regulator sockets
- Built in overload protection features
- Fits common 5V to 3.3V needs
- Easy to connect with development boards
Cons
- Heat can build up at high loads
- Lower efficiency compared to switching options
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The simplicity of the design makes it perfect for beginners who want to avoid complex soldering. It integrates easily into breadboards and perfboards.
Be aware that as a linear regulator, it dissipates heat when the voltage difference is high. It is best used when input voltage is close to output voltage.
Choose this if you value simplicity and low cost over efficiency. It is perfect for low current logic level conversion.
Simple Connection Design
The dual panel design with 2 pin single row pins simplifies connecting to MCU development boards quickly.
Built-in Protection
Overheat shutdown circuits protect the chip from damage during overload or high temperature conditions.
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3. 5pcs 3.3V DC-DC Buck Converter – Best Premium Regulator
5pcs 3.3V DC-DC Buck Converter, 4.5V-30V to 3.3V Step Down Regulator
4.5V to 30V input support
Up to 1.8A peak current
Compact 17.5mm length
Ripple under 30mV
This premium regulator offers high performance with a wide input range that goes up to 30V. It is a strong candidate for robust and demanding projects.
Pros
- Wide input range suitable for various batteries
- High current capability for heavier loads
- Ultra compact size for wearables
- Tested before shipping for quality
- Ideal for Arduino and ESP32 projects
Cons
- No specific rating visible yet
- Requires careful wiring for best results
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The ability to supply up to 1.8A peak current makes it suitable for powering larger sensors or motors alongside logic. Clean power ensures reliability.
Its small size is perfect for wearables and IoT devices where space is at a premium. You get five units for prototyping different setups.
Buy this if you need a reliable and flexible power source. It delivers high quality for a fair price.
Wide Power Source Compatibility
Works with 12V/24V batteries solar panels and vehicle power effectively without extra components.
Compact Design
Fits wearables drones and tight PCB layouts easily due to its miniature dimensions.
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4. 3.3V Regulator Mini Reducer – Mini360 Power Module
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)
Input 4.5V to 24V
Output 3.3V at 1.5A
Ultra small size dimensions
High switching frequency 1.5MHz
With a perfect 5.0 rating, this module is a highly trusted option for stepping down voltage efficiently. It combines a tiny form factor with decent current capability.
Pros
- Perfect rating from verified users
- Very small size for tight enclosures
- Handles up to 1.5A output current
- Low ripple voltage output
- Works with 5V 12V and 24V
Cons
- Must protect inductive loads externally
- Soldering pads are quite small
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The Mini360 design is known for being incredibly compact. It fits into spaces where other regulators simply cannot go. The low ripple ensures sensitive chips remain stable.
Note that using motors or servos may require adding Zener diodes to prevent back EMF damage. This is a standard precaution for many buck converters.
This is an excellent choice for portable projects needing clean power. It delivers reliability in a miniature package.
Compact Mini360 Footprint
Dimensions of 17.5×12.3×4.3mm allow it to fit into very narrow project enclosures.
Stable Output Performance
Output ripple stays less than 30mV and switching frequency is typically 1MHz.
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5. Dorhea 7 Pack 3.3V DC-DC Buck Converter – Linear Module
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 at 0.8A
Three pin connection layout
Overheat protection feature
This pack offers seven linear regulators ideal for small scale logic conversion. It rates 4.2 and provides a straightforward solution for 5V to 3.3V needs.
Pros
- Seven units provided for multiple projects
- Simple 3 pin design for easy wiring
- Fixed 3.3V output voltage
- Overheat shutdown prevents damage
- Great for low power microcontrollers
Cons
- Limited to 800mA current only
- May get warm under load
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The 3 pin design makes it simple to integrate into SCM project designs. It ensures constant power supply for your development boards.
Be mindful not to exceed 800mA load current or the unit may be damaged. It is best suited for sensors and logic only.
Choose this for low current applications where cost is key. It is a solid option for entry level electronics.
Fixed Voltage Output
Delivers a fixed 3.3V output which simplifies circuit design for 3.3V devices.
Safety Features
Overheat protection circuits help prevent damage during abnormal operating conditions.
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6. AMS1117-3.3 15pcs Pack – High Volume LDO
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
15 pieces in package
High accuracy voltage output
This high volume pack offers excellent value with fifteen units included. It holds a perfect 5.0 rating for consistent quality and reliability in basic circuits.
Pros
- Perfect rating from buyers
- Fifteen units for large batches
- High output voltage accuracy
- Dynamic voltage difference control
- Plug and play pin design
Cons
- Linear design dissipates more heat
- Not for high current needs
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The dynamic voltage difference control helps reduce power consumption in battery scenarios. It adjusts impedance to maintain stability efficiently.
While it supports 12V input, the heat generated might be significant if current draw is high. Consider a heatsink for sustained loads.
Buy this if you need many regulators for mass production or testing. It is reliable and easy to use.
Accuracy and Stability
Ensures minimal voltage fluctuation when the load changes with accuracy within 2 percent.
Battery Friendly Design
Dynamic control of voltage difference significantly reduces power consumption for portable scenarios.
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7. 5PCS 3.3V Mini Buck Converter Board – Black PCB
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 at 1.8A
Very small size board
Reverse polarity protection mark
This black PCB board offers a small footprint and high current capability. It rates 3.4 but provides features that appeal to compact project builders.
Pros
- Wide input range to 30V
- High current capability for outputs
- Very small dimensions for tight fits
- Reverse polarity marks for safety
- Low ripple and high frequency
Cons
- Lower rating suggests possible inconsistency
- Output voltage may drop at full load
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It supports inputs up to 30V which is useful for industrial or automotive use. The output can reach 1.8A peak current for demanding tasks.
Some users report voltage drops under full load which should be expected. It is a good option if space is the primary constraint.
Use this for applications where size matters most. It provides solid performance for its compact build.
Safety Protection
The PCB board has a reverse polarity mark which can suppress ripple and protect the circuit.
Stable Output
Output ripple is less than 30mV typically and frequency is up to 1.5MHz.
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8. 5pcs 3.3V DC-DC Buck Converter – Tested Units
5pcs 3.3V DC-DC Buck Converter, 4.5V-30V to 3.3V Step Down Regulator
Input 4.5V to 30V
Output 3.3V at 1.8A
All units tested before shipping
Compact wearables fit
These units come pre tested before shipping which reduces the risk of defects. They handle wide inputs and deliver up to 1.8A peak current reliably.
Pros
- Tested before shipping for quality
- Wide input for solar or vehicle power
- Supports Arduino and ESP32 easily
- Clean power for sensors
- Ultra compact form factor
Cons
- No rating provided in data
- Requires wires for connection
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The wide input range makes it suitable for solar panels or 24V batteries. It integrates easily with most standard development boards.
Soldering wires is required for connection which might be a small hurdle for some. However this ensures a solid fit.
Buy this if you need verified working regulators quickly. It is great for prototyping and builds.
Quality Assurance
Each unit is tested before shipping to ensure consistent performance upon delivery.
Versatile Power Sources
Works with 12V and 24V batteries solar panels and vehicle power systems effectively.
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9. 10PCS 5V to 3.3V DC-DC Step Down Power Supply Buck Module – Hybrid
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 at 0.8A
Automatic adjustable boost board
Start limit voltage feature
This pack holds a perfect 5.0 rating and includes ten units for varied projects. It features a start limit voltage that helps manage power efficiently.
Pros
- Perfect rating from verified users
- Ten pieces in a single pack
- Wide input range for batteries
- Automatic boost feature support
- Simple module design
Cons
- Limited to 7V input max
- Low current 800mA limit
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The automatic adjustable boost board allows for flexible use across different voltage inputs. It is ideal for battery projects up to 7V.
Do not exceed operating voltages as damage may occur easily. Keep load current under 800mA to ensure longevity.
Buy this for battery operated devices needing reliable power. It is a high value option for small scale builds.
Automatic Adjustment
The module indicates the operating voltage automatically to prevent exceeding safe limits.
High Value Pack
Ten pieces in one pack offer excellent quantity for multiple project prototypes.
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10. 3.3V Regulator 6pcs Mini Reducer – MP1584EN Power Module
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(3.3 Volts)
Input 4.5V to 24V
Output 3.3V at 1.8A
MP1584EN chip design
Tiny dimensions for aircraft
With a near perfect 4.9 rating, this module uses the robust MP1584EN chip. It is excellent for high current and compact applications.
Pros
- Very high 4.9 rating
- Six units per package
- Strong 1.8A output current
- Small size fits aircraft models
- Ripple under 30mV
Cons
- Inductive loads need protection
- Voltage drops at 1.5A
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The output current reaches 1.8A which supports more demanding electronics. It keeps ripple low to ensure signal integrity for sensitive parts.
You might add capacitors for protection when using with motors. This ensures the rear stage chips are safe from back EMF.
Select this for aircraft models or portable high power devices. It is a top rated solution for reliable power.
MP1584EN Chip
Features the MP1584EN power module for robust and reliable voltage conversion performance.
Compact Fit
Dimensions of 17x11x3.6mm allow it to fit in aircraft models and tight spaces.
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Buying Guide – How to Choose the Best 5V to 3V Voltage Regulator
Selecting the right regulator depends on several factors like input voltage output current and physical size. Understanding these helps you avoid damage and inefficiency.
Input Voltage Range
Ensure the regulator accepts your power source voltage. Some accept up to 30V while others only go to 12V. Choosing the wrong range can destroy the unit.
Check the datasheet for minimum and maximum input limits before buying.
Output Current Requirement
Calculate the total current draw of your load. If your project needs 1A ensure the regulator supports at least that. Exceeding limits causes overheating and failure.
Select a regulator with a current rating higher than your max load.
Efficiency vs Heat
Switching buck converters are more efficient and produce less heat than linear regulators. Linear ones waste voltage as heat which may require heatsinks in high drops.
Choose switching for battery power or linear for low noise low heat.
Physical Dimensions
Small projects require tiny modules. Many options are under 20mm long but check pin spacing for fit. Space constraints may dictate which package type you select.
Verify the size matches your PCB or enclosure layout.
Output Ripple
Clean power is vital for sensitive sensors and logic. Low ripple under 30mV ensures stability. High ripple can introduce noise into your circuit.
Look for specs mentioning ripple to maintain signal integrity.
Package Type
Solder pads or pin headers vary by model. Some require soldering while others are plug and play. Pick a type that matches your skill level.
Prefer modules with clear pin labels for easy connection.
Protection Features
Built-in overload or overheat protection saves your device. Many regulators shut down under stress to prevent burnout. This adds safety for long term use.
Prioritize units with overheat or overcurrent protection circuits.
Quantity and Value
Buying packs of five or more reduces cost per unit. Ensure the price per module is reasonable. Bulk buys are ideal for batch projects.
Compare price per unit to get the best value for your needs.
How to Use and Care for Your 5V to 3V Voltage Regulator
Connect the input pins to your power source ensuring polarity matches. Double check your work to avoid shorting the supply.
Attach your load to the output pins and ensure all grounds are common. Use wires with proper gauge to avoid voltage drop.
Monitor heat during initial use and allow ventilation. If using with motors add external capacitors or diodes for protection.
Frequently Asked Questions
Can I use a 3.3V regulator with a 24V input?
Yes some buck converters accept inputs up to 24V or more. Check the input range on the product page. Linear regulators may overheat if the drop is too high.
What is the difference between buck and linear regulators?
Buck converters switch to step down voltage efficiently with less heat. Linear regulators drop voltage by burning excess as heat. Buck is better for efficiency.
Do I need a heatsink for these modules?
Switching modules often do not need heatsinks. Linear ones may if the current is high. Check the specs and temperature rise before adding.
Can I use these with Arduino boards?
Yes they are compatible with 5V Arduino logic levels. Just wire the 3.3V output to the logic pins. Ensure ground connections are shared.
What current can these regulators supply safely?
Most supply up to 1.8A or 0.8A depending on the model. Check the rating before powering heavy loads. Exceeding limits can damage the board.
How do I wire a buck converter module?
Connect the input to your power source and output to your device. Use the VCC and GND pins clearly marked on the board. Ensure polarity is correct.
Final Thoughts on Choosing the Best 5V to 3V Voltage Regulator
Our top picks include the versatile buck converters for broad input and the simple linear modules for ease of use. Each option balances size and performance well.
Prioritize input range and current capacity when selecting a regulator. These factors determine if the unit will survive your power conditions.
Remember to check current prices and reviews before purchasing. Supplies change often so verify availability for your order.