10 Pack 3 Pins AMS1117-3.3 DC 4.75V-12V to 3.3V Voltage Regulator
4.1Editor score
Affordable ten pack value
Simple two pin connection
Built in thermal protection
In this guide
Finding the right voltage regulator is crucial for protecting sensitive electronics from unstable power sources. These devices step down higher voltages like 5V or 12V to a stable 3.3V output for microcontrollers and sensors.
We evaluated ten highly rated modules based on efficiency, size, output current, and ripple noise. Our analysis covers both linear and switching regulators to help you choose the best fit for your specific project needs.
Each pick highlights key features like input range, max current, and protection circuits. Prices and availability change frequently, so verify current listings before purchasing to ensure you get the best value for your budget.
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
Low output ripple noise
Compact space saving design
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)
4.9Editor score
High 1.8A output current
Ultra compact small size
Stable switching frequency
Top 10 Best 5V to 3V Voltage Regulator in 2026 Compared
This comparison table provides a quick side-by-side overview of all ten selected voltage regulator modules. Review the input voltage ranges, output currents, and key specifications to find the ideal match for your power requirements.
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
Max Current: 1.8A
Size: 17.5mm x 12mm
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
Max Current: 0.8A
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
Max Current: 100mA
Type: Step Down/Up
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
Max Current: 1.5A
Size: 17.5mm x 12mm
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
Max Current: 800mA
Type: Linear Regulator
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
Max Current: 800mA
Type: Fixed LDO
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
Max Current: 1.8A
Size: 0.67 x 0.24 inches
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
Max Current: 1.8A
Size: 17.5mm x 12.3mm
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
Max Current: 800mA
Type: Step Down
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
Max Current: 1.8A
Size: 17mm x 11mm
4.9Editor score
1. 5pcs 3.3V Buck Converter Module – Best Overall 5V to 3V Voltage Regulator
5pcs 3.3V Buck Converter Module
Input Voltage: 4.5V-24V
Output Voltage: 3.3V
Max Current: 1.8A
Ripple: Less than 30mV
This buck converter module is rated 4.6 stars and offers exceptional versatility for hobbyists needing stable 3.3V power. It accepts a wide input range from 4.5V to 24V, making it compatible with most standard power supplies.
Pros
- Wide input voltage range
- Very low output ripple
- Compact and space saving
- Great value 5 pack
Cons
- Requires diode for inductive loads
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Its standout quality is the extremely low ripple under 30mV, which ensures clean power for sensitive microcontrollers and sensors. The compact size allows it to fit easily into tight spaces in DIY or portable embedded projects.
While it delivers high current up to 1.8A, users must add external protection like a diode when driving inductive loads such as motors to prevent voltage spikes that could damage the module.
Ideal for makers building multiple circuits, this 5 pack provides excellent value. It is highly recommended for projects requiring reliable step-down conversion without excessive heat generation or complex wiring.
Wide Input Voltage Compatibility
The broad input range ensures stable operation regardless of whether you use 5V, 9V, 12V, or 24V power sources.
Clean Power Output
Low ripple and high switching frequency protect your devices from voltage fluctuations and electrical noise.
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2. 10 Pack AMS1117-3.3 – Best Budget 5V to 3V Voltage Regulator
10 Pack AMS1117-3.3
Input Voltage: 4.75V-12V
Output Voltage: 3.3V
Max Current: 0.8A
Type: Linear Regulator
Rated 4.1 stars, this linear regulator module is an affordable solution for low power projects needing 3.3V. It features a simple dual panel design with a two pin single row connector for easy MCU integration.
Pros
- Affordable ten pack
- Simple two pin connection
- Overheat protection included
Cons
- Lower current capacity
- Less efficient than switching
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Its main strengths are simplicity and cost effectiveness. Built in overheat shutdown protection ensures safe operation, making it suitable for battery chargers and active instruments with moderate power requirements.
Trade-offs include limited current output of 0.8A and lower efficiency compared to switching regulators, which may generate heat under high load conditions.
Best for hobbyists needing many units for small projects or prototyping, this pack offers reliable performance at a minimal cost without complex assembly.
Easy MCU Integration
The simple pinout design connects directly to Arduino and MSP430 boards for constant power supply.
Built in Safety
Overheat shutdown circuits prevent damage from overload or excessive temperature during use.
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3. MP1584EN 6 Pack – Best Premium 5V to 3V Voltage Regulator
MP1584EN 6 Pack
Input Voltage: 4.5V-24V
Output Voltage: 3.3V
Max Current: 1.8A
Size: 17mm x 11mm
This module earns a near perfect 4.9 rating for its premium performance and ultra compact form factor. It delivers up to 1.8A output current with ripple kept under 30mV for sensitive electronics.
Pros
- Highest rating of 4.9
- Very compact design
- High current 1.8A
- Stable switching frequency
Cons
- Requires external protection for motors
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Key strengths include its small size of 17x11mm and high switching frequency which ensures stable output even at full load. It is ideal for aircraft models and tight PCB layouts.
While it handles high currents well, users should add Zener diodes when using inductive loads to protect downstream chips from ripple and voltage spikes.
Recommended for professional projects needing reliable high current power in a tiny package, this 6 pack offers top tier quality and versatility for advanced builds.
Ultra Compact Size
The small footprint makes it perfect for wearable devices and crowded circuit boards.
High Current Stability
Stable 1.8A output ensures consistent voltage even under heavy load conditions.
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4. Mini Reducer 5pcs – Best Versatile 5V to 3V Voltage Regulator
Mini Reducer 5pcs
Input Voltage: 4.5V-24V
Output Voltage: 3.3V
Max Current: 1.5A
Ripple: Less than 30mV
This module achieves a perfect 5.0 rating for its reliable performance across a wide input range. It efficiently steps down voltages from 5V to 30V to a stable 3.3V output.
Pros
- Perfect 5.0 rating
- Wide 5 to 30V input
- Compact mini size
- 1.5A high current output
Cons
- Protection needed for motors
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Standout features include its miniaturized size and ability to deliver up to 1.5A with minimal ripple. This makes it suitable for portable electronics and high power microcontroller applications.
As with most buck converters, inductive loads like servos require additional protection to prevent damage to the regulator or connected components.
Highly recommended for DIY projects needing flexible voltage input and compact footprint, this pack offers exceptional value and quality for varied power needs.
Versatile Input Range
Compatible with various power sources from 5V to 30V for diverse applications.
Compact Design
Small dimensions allow easy integration into space constrained projects.
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5. Dorhea 7 Pack – Best for Simple Projects 5V to 3V Voltage Regulator
Dorhea 7 Pack
Input Voltage: 4.75V-12V
Output Voltage: 3.3V
Max Current: 800mA
Type: Linear Regulator
Rated 4.2 stars, this linear regulator module features a simple three pin design for easy connection to MCUs. It delivers a steady 3.3V output with up to 800mA current capacity.
Pros
- Three pin design
- Seven pack value
- Overheat protection
Cons
- Limited to 800mA
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Its key strengths are simplicity and overheat shutdown protection which ensure safe operation in active instruments or battery chargers. It is ideal for projects needing constant power without complex wiring.
Trade-offs include limited current capacity compared to switching modules which may generate heat under full load.
Best for hobbyists or SCM designs needing multiple small regulators, this pack provides reliable performance at an affordable price point for low power applications.
Easy Connection
Three pin layout simplifies circuit design for beginners and experienced developers.
Overheat Protection
Built in thermal safeguards prevent damage during prolonged operation.
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6. AMS1117-3.3 15pcs – Best Value Pack 5V to 3V Voltage Regulator
AMS1117-3.3 15pcs
Input Voltage: 4.75V-12V
Output Voltage: 3.3V
Max Current: 800mA
Accuracy: ±2%
This pack achieves a perfect 5.0 rating offering fifteen units of the AMS1117 linear regulator. It stabilizes 4.75V to 12V input down to 3.3V with ±2% accuracy for minimal fluctuation.
Pros
- Fifteen unit value pack
- High efficiency design
- Plug and play
- Overcurrent protection
Cons
- Input range limited
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Key strengths include dynamic voltage difference control that reduces power consumption making it suitable for battery powered scenarios. Plug and play design simplifies connection to Arduino and STM32 boards.
Trade-offs are limited input range and lower current capacity compared to switching regulators which may generate heat.
Highly recommended for large scale prototyping or portable embedded systems, this pack provides reliable performance and value across diverse applications.
Dynamic Voltage Control
Adjusts impedance to reduce power consumption in battery powered applications.
Plug and Play
Simple three pin layout simplifies circuit connections for rapid prototyping.
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7. Mini Buck 5pcs – Best Compact 5V to 3V Voltage Regulator
Mini Buck 5pcs
Input Voltage: 5V-30V
Output Voltage: 3.3V
Max Current: 1.8A
Size: 0.67×0.24 inches
Rated 3.4 stars, this board is ideal for space constrained projects needing high current. It steps down 5V to 30V to a stable 3.3V with output current up to 1.8A.
Pros
- Ultra small size
- 1.8A output current
- Low ripple output
Cons
- Lower overall rating
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Key strengths include its ultra small PCB size and ripple less than 30mV ensuring stable output voltage for sensitive electronics. Reverse polarity marks enhance safety during installation.
Trade-offs include a lower overall rating suggesting potential variability in quality control across units.
Best for daily needs in wearable or compact electronics where size is critical this pack provides sufficient power for most small applications.
Ultra Small PCB
Compact board fits easily into tight enclosures and wearable devices.
Reverse Polarity Protection
Markings help prevent incorrect wiring which could damage the circuit.
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8. DC-DC Buck 5pcs – Best for Solar Applications 5V to 3V Voltage Regulator
DC-DC Buck 5pcs
Input Voltage: 4.5V-30V
Output Voltage: 3.3V
Max Current: 1.8A
Ripple: Under 30mV
This module offers a wide input range from 4.5V to 30V making it ideal for solar panels and vehicle power systems. It provides stable 3.3V output up to 1.8A peak current.
Pros
- Wide input range
- Works with solar panels
- Ultra compact size
Cons
- No rating available
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Key strengths include its ultra compact size and low ripple under 30mV protecting microcontrollers and sensitive sensors. Each unit is tested before shipping to ensure readiness for Arduino or ESP32 projects.
Trade-offs include lack of available rating data which makes long term reliability less certain.
Highly recommended for IoT and wearable devices needing flexible power sources, this pack delivers reliable performance and compact design for diverse builds.
Wide Voltage Input
Accommodates solar panels and vehicle batteries with flexible input voltage.
Ultra Compact
Small footprint enables integration into tight spaces and portable electronics.
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9. 10PCS 5V to 3.3V – Best for Prototyping 5V to 3V Voltage Regulator
10PCS 5V to 3.3V
Input Voltage: 4.5V-7V
Output Voltage: 3.3V
Max Current: 800mA
Type: Step Down
This pack achieves a perfect 5.0 rating offering ten modules for reliable step down conversion. Input is limited to 4.5V to 7V ensuring safe 3.3V output up to 800mA.
Pros
- Ten unit value
- 5.0 rating
- Simple design
Cons
- Limited input voltage
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Key strengths include automatic adjustable features and simplicity making it ideal for prototyping small circuits. Load current must stay within 800mA to avoid damage.
Trade-offs are limited input voltage range which restricts use to lower voltage sources.
Highly recommended for hobbyists needing multiple stable regulators at low voltage, this pack provides consistent performance and excellent value.
Safe Voltage Limits
Designed for 4.5V to 7V input to ensure safe and stable operation.
Automatic Adjustment
Boost board features allow simple adaptation to various power conditions.
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10. Mini Reducer 6pcs – Best Compact Solution 5V to 3V Voltage Regulator
Mini Reducer 6pcs
Input Voltage: 4.5V-24V
Output Voltage: 3.3V
Max Current: 1.8A
Size: 17mm x 11mm
Rated 4.9 stars this module provides high current output up to 1.8A in a very compact package. It delivers stable 3.3V with ripple under 30mV for reliable performance.
Pros
- High rating 4.9
- Compact size
- 1.8A current output
Cons
- Needs motor protection
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Key strengths include its small size suitable for aircraft models and tight PCB layouts. Switching frequency ensures stable output voltage even under heavy load.
Trade-offs include need for external Zener and capacitor protection when driving motors to prevent ripple damage.
Recommended for professional applications requiring compact high current power this 6 pack offers excellent reliability and versatility.
Compact Size
Small dimensions make it ideal for space constrained models and boards.
High Current Stability
Delivers consistent voltage output even at high current levels.
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Buying Guide – How to Choose the Best 5V to 3V Voltage Regulator
Selecting the right regulator depends on your project's voltage requirements current needs and physical constraints. This guide outlines key factors to consider for optimal performance and safety.
Input Voltage Range
Ensure the regulator accepts your available power source. Some modules support 4.5V to 24V or wider while others are limited to 5V to 12V which restricts compatibility.
Choose a model with an input range that covers your highest expected voltage.
Output Current Capacity
Calculate the total current draw of all connected devices. Regulators range from 800mA to 1.8A so select one exceeding your peak demand to avoid overheating.
Higher current capacity provides safety margin for peak loads.
Regulation Type
Linear regulators like AMS1117 are simple and quiet but generate more heat. Switching buck converters are more efficient and handle wider input ranges but may produce noise.
Choose switching for efficiency and linear for low noise applications.
Physical Size
Check the module dimensions especially for portable or embedded projects. Compact PCB boards save space but may require careful soldering or mounting.
Measure available board area before choosing form factor.
Output Ripple
Low ripple ensures clean power for sensitive microcontrollers and sensors. Look for specs indicating ripple below 30mV to avoid signal interference.
Lower ripple is essential for analog and high precision electronics.
Thermal Protection
Built in overheat protection prevents damage during overload conditions. Verify features like thermal shutdown especially for high current applications.
Protection features extend component lifespan and ensure safety.
Package Quantity
Buying multi pack options offers better value for multiple projects. Ensure all units are tested and compatible with your designs.
Bulk packs are cost effective for prototyping and production.
Connector Type
Simple two or three pin headers ease connection to MCUs. Some modules use screw terminals for flexible wiring in industrial settings.
Select connector type that matches your existing system.
How to Use and Care for Your 5V to 3V Voltage Regulator
Connect the input terminals to your power source ensuring polarity matches the module markings. Secure the output pins to your microcontroller or load for stable power delivery.
If driving inductive loads like motors always add protection diodes and capacitors to prevent voltage spikes that could damage sensitive circuitry.
Store modules in a dry cool place away from direct sunlight to prevent solder joint degradation and maintain component reliability over time.
Frequently Asked Questions
What is the difference between linear and switching voltage regulators?
Linear regulators like AMS1117 are simple and produce low noise but waste excess voltage as heat. Switching regulators are more efficient and handle wider input ranges but may generate electrical noise requiring filters.
Can I use these regulators with battery powered devices?
Yes many modules support battery input ranges. Choose switching regulators for better efficiency to maximize battery life and ensure input voltage stays above minimum thresholds.
Why is output ripple important for microcontrollers?
High ripple can cause erratic behavior or data corruption in microcontrollers and sensors. Low ripple under 30mV ensures stable power for accurate operation.
Do I need external capacitors for these modules?
Most buck modules include internal capacitors but external ones are recommended for inductive loads to smooth voltage spikes and protect downstream components.
What input voltage is best for 3.3V output?
Input voltages between 5V and 12V are ideal for most modules. Higher input may reduce efficiency on linear regulators and requires careful heat management.
How do I protect motors from regulator damage?
Always add flyback diodes and capacitors between motor terminals to absorb back EMF spikes that could otherwise destroy the voltage regulator.
Final Thoughts on Choosing the Best 5V to 3V Voltage Regulator
Our top picks include versatile buck converters for wide input ranges and reliable linear regulators for low noise projects. Each option offers distinct advantages depending on your specific needs.
Prioritize output current capacity and physical size to match your project constraints. Ensure thermal protection and low ripple are included for reliable operation.
Verify current availability and prices before purchase as these vary frequently. Choose units with solid user ratings to ensure long term performance and safety.