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10 Pack 3 Pins AMS1117-3.3 DC 4.75V-12V to 3.3V Voltage Regulator Step Down Power Supply Buck Module 800mA

Brand: ANMBEST

3.9 180 ratings

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Purchase options and add-ons

Brand	ANMBEST
Color	Blue
Item Weight	0.18 Ounces
Input Voltage	12 Volts
Output Voltage	3.3 Volts

About this item

AMS1117-3.3 is a positive Voltage Regulator Step Down Power Supply Module, support DC 4.75-12V input and 3.3V fixed voltage and 0.8A current output.
The module is suitable for electronic devices such as SCM project design needs 5V power supply, It is simple Dual-panel design and the Input output using the 2 Pin single row pin for easy connection. AMS1117-3.3 pinout can be easy to connected with your MCU development and provide the contant power supply.
Applicable for high-efficiency linear regulator Published Active Power Regulator Battery Charger Active instrument.
Applications: Arduino UNO MEGA2560; MSP430 Development Board; 3.3V Low power consumption MCU; FPGA/CPLD PLD Programmable Logic Systems; ARM7 ARM9 ARM11 STM32; etc.
AMS1117 overheat shutdown circuit provides overload and over-temperature protection.

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	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart
Price	$6.99	$9.99	$8.99	$6.99	$9.99	$6.49
Delivery	Get it as soon as Monday, May 6	Get it as soon as Monday, May 6	Get it as soon as Monday, May 6	Get it as soon as Monday, May 6	Get it as soon as Monday, May 6	Get it as soon as Monday, May 6
Customer Ratings	3.9180	4.2570	4.52	4.59	4.349	4.4121
Sold By	Anmbest	DROK	Shutao	XieQianJin(品牌已备案,跟卖必投诉封店,绝不和解)	Esedese Technology	HiLetgo
output voltage	3.3 volts	5 volts	5 volts	3.3 volts	5 volts	3.3 volts
input voltage	12 volts	12.0 volts, 5.0 volts	12.0 volts, 5.0 volts, 7.0 volts	—	5 volts	10 volts

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Product information

Package Dimensions

1.75 x 1.25 x 0.02 inches

Item Weight

0.176 ounces

ASIN

B07CP4P5XJ

Item model number

Anmbest_MD01

Customer Reviews

3.9 180 ratings

3.9 out of 5 stars

Best Sellers Rank

#71,895 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement)
#275 in Power Converters

Is Discontinued By Manufacturer

Date First Available

April 26, 2018

Manufacturer

Anmbest

Country of Origin

China

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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Product Description

Anmbest 10pcs 3 Pins AMS1117-3.3 DC 4.75V-12V to 3.3V Voltage Regulator Step Down Power Supply Buck Module 800mA

Features:
Output current: 1A
Line adjustment rate: 0.2% (maximum)
Load regulation: 0.4% (max.)
Package Type: SOT-223
Operating junction temperature range: -40 to 125°C
Welding temperature (25 seconds): 265°C
Storage temperature: - 65~150°C
Output voltage: 3.267 to 3.333V (IOUT: 0 to 1A, VIN :4.75V to 12V)
Line adjustment (maximum): 10mV (VIN :4.75V to 12V)
Load regulation (maximum): 15mV (VIN = 5V, IOUT: 0 to 1A)
Voltage difference (maximum): 1.3V
Current limit: 900 ~ 1500mA
Quiescent Current (Max): 10mA
Ripple suppression (minimum): 60dB
Size:8.6mm x 12.33mm

Note:
1.Please do not exceed operating voltage, or it will be damaged easily!
2.Exceeding the maximum allowable power consumption will result in excessive chip temperature
3.Can not reverse polarity , or it will result in short circuit!

Package included:
10 x AMS1117-3.3 module

Customer reviews

3.9 out of 5

180 global ratings

How customer reviews and ratings work

Customers say

Customers like the size and value of the power converter. They mention that it's small, compact, and good value. However, some complain about the heat and mixed opinions on quality.

AI-generated from the text of customer reviews

4 customers mention4 positive0 negative

Customers like the size of the power converter. For example, they say it's small, light, and easy to mount on a breadboard or on pcb using.

"...These converters are small and easy to mount on a breadboard or on a PCB using headers, or directly soldered to a board...." Read more

"While these boards are compact and good value - there is a chance that you will have a random part delivered - Ordered 5V board set and received 3V3..." Read more

"Well these work, are small, light and cheap. All good things, and no I as that I can see" Read more

"Works perfectly and are really small" Read more

4 customers mention4 positive0 negative

Customers appreciate the value of the power converter. They mention that it's compact, light, and cheap.

"...A great solution for a very reasonable price" Read more

"While these boards are compact and good value - there is a chance that you will have a random part delivered - Ordered 5V board set and received 3V3..." Read more

"Well these work, are small, light and cheap. All good things, and no I as that I can see" Read more

"High quality at an excellent price...." Read more

19 customers mention11 positive8 negative

Customers are mixed about the quality of the power converter. Some mention it works great for their purpose, and is ideal for modern microcontroller projects that need both 5 volt and 3.3 volt. However, others say that most of the batch don't work, and that the quality control is terrible.

"These little power converters are ideal for modern microcontroller projects that need both 5 volt and 3.3 volt power...." Read more

"It took me a while to figure out why my project wasn't working right...." Read more

"...Other than that they seem to work very well." Read more

"...still attached to a single board without any ability to separate, so unusable." Read more

4 customers mention0 positive4 negative

Customers are dissatisfied with the heat produced by the power converter. They mention that it is fragile and overheats. They also say that it dissipates excess voltage as heat, which causes it to get hot.

"...above 3.3v is just going to get dumped through the ground line, heating up the chip. This might be why some of you are having issues...." Read more

"...Which means these dissipate excess voltage as heat hence they get hot and are not power efficient when VIN is quite a bit higher than VOUT voltage...." Read more

"Out of the 10, only 7 work as intended. Other three overheat way too much. For the price I don't mind a few being bad." Read more

"...Works great, however you should note that the module will get warm depending on the usage." Read more

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Bob Glicksman

High quality at an excellent price.

Reviewed in the United States on July 25, 2019

Verified Purchase

These little power converters are ideal for modern microcontroller projects that need both 5 volt and 3.3 volt power. My projects use USB power supplies that provide 5 volt power to my circuit boards. I directly power 5 volt devices from this source and use these little converters to give me 3.3 volt power for newer microcontrollers and other 3.3 volt logic parts. The converters are spec-ed at 800 ma, which is plenty of power for these purposes. Buck converters are highly efficient and dissipate very little power. These converters are small and easy to mount on a breadboard or on a PCB using headers, or directly soldered to a board.

My only complaint is that the 10 little boards all come connected together and it is a little tricky to separate them cleanly. But this can be done with a little care. The manufacturer says that they do this to protect the boards while shipping and I can see that this is true.

One person found this helpful

Helpful

Denys

USB power to 3V down converter

Reviewed in the United States on December 30, 2022

Verified Purchase

The media could not be loaded.

Bought this to replace a battery powered LED string lights. It uses two AA batteries, so I needed to down convert from 5V to 3V. I don’t know the powers consumption of the LEDs, so I opted for this converter since it is more than 500mA. I am satisfied with this solution because the leads are easy to access. It’s a great way to replace battery powered devices if you have plenty of USB cables lying around.

2 people found this helpful

Helpful

Dwight Beverly

Work fine as a Linear Regulator

Reviewed in the United States on January 9, 2024

Verified Purchase

It's important everyone knows that these are LINEAR REGULATORS. What does that mean? It means it just dumps everything above 3.3v through the ground line. If you feed it 12v at 1A, it will literally dump most of the power to give you 3.3v on the output line.

Are they bad because of this? No. It's just a specific tool with a specific purpose. Yes, it will lower the voltage from whatever you give it to 3.3v, but it's also dumping the excess. These are very handy for small power surges, and are even more efficient than switching regulators when the input voltage is close to the output voltage.

When the voltage difference is really high though, everything above 3.3v is just going to get dumped through the ground line, heating up the chip. This might be why some of you are having issues. If you want a smarter converter that takes in 0-24V and spits out a clean 3.3v with less loss, look up a "Buck" converter, specifically one that "Switches". "Switching Buck Converter".

These guys are just fine for 5v to 3.3v, and even better if you use resistors to limit the current going through the ground line.

One person found this helpful

Helpful

The Amigo

Most of the batch don't work

Reviewed in the United States on November 30, 2023

Verified Purchase

It took me a while to figure out why my project wasn't working right. When started testing individual components, I found that the buck converter's output was the same 10v as its input. I pulled more from the box and found that the next 4 had the same problem, and only 1 worked.

I'd return them, but it took me too long to figure out that this was the bad component in my circuit. Now I've learned: test them when you get them.

Helpful

brian

Worked like a charm

Reviewed in the United States on March 3, 2019

Verified Purchase

The 3.3 Volts is whats needed for the WiFi esp8266 chips, but what to do if relays and other devices are 5 volts. What to do. Use a 5 volt power supply and use these step down voltage regulators. A great solution for a very reasonable price

4 people found this helpful

Helpful

Mole_Catcher

No good for battery powered applications

Reviewed in the United States on December 10, 2022

Verified Purchase

These units have a small LED on them. The quiescent current is a little over 3mA. While there is utility in knowing that the unit has power going to it, the LED is sucking power from a battery. Other than that they seem to work very well.

Helpful

Adam D

Great for 5v fans that are too loud

Reviewed in the United States on January 26, 2023

Verified Purchase

I installed fans in a pi rack that needed better cooling. The fan headers were 5v and so the 5v fans I'm using were running a full speed causing too much noise. I used this to bring it down to 3.3v so now the fans are nice and quiet running at a slower speed.

Helpful

Grey Whittney

Unusable multiple units still attached together

Reviewed in the United States on October 7, 2023

Verified Purchase

Well built and placed on the PCB, but all the units were still attached to a single board without any ability to separate, so unusable.

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