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STMicroelectronics L7805CV 5V 1.5A Positive Voltage Regulator, 5 Pieces

3.8 3.8 out of 5 stars 92 ratings
Currently unavailable.
We don't know when or if this item will be back in stock.
  • Output current up to 1.5 A
  • Output voltage of 5VDC
  • Thermal overload protection
  • Short circuit protection
  • Output transition SOA protection
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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 1.23 x 0.42 x 0.19 inches; 0.16 ounces
  • Item model number ‏ : ‎ 114
  • Date First Available ‏ : ‎ December 9, 2013
  • Manufacturer ‏ : ‎ Addicore
  • ASIN ‏ : ‎ B00H7KTRO6
  • Customer Reviews:
    3.8 3.8 out of 5 stars 92 ratings

Product Description

These regulators can provide local on-card regulation, eliminating the distribution problems associated with single point regulation. Each type employs internal current limiting, thermal shut-down and safe area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1 A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltage and currents.

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Customer reviews

3.8 out of 5 stars
3.8 out of 5
92 global ratings

Customers say

Customers like the performance, quality and value of the power supplies. For example, they mention it works well, it's excellent value and it includes a diagram. Customers also like the ease of use, and protection. That said, opinions are mixed on warmth.

AI-generated from the text of customer reviews

23 customers mention20 positive3 negative

Customers like the performance of the regulators. For example, they mention that they work well, are reliable, and are useful for creating regulated power supplies. Some say that the regulator works great for charging phones and that there are no problems with it.

"...They didn't get too hot, and worked fine in my test circuits. None have burned out or been duds...." Read more

"No problems at all. If I had a concern, it was that the inputs vs outputs were only labeled on a tiny paper card included with the purchase...." Read more

"...This has been extremely useful, especially with these and the 3.3V regulators I bought from them, which have different pinouts...." Read more

"...It worked great even after I shorted the circuit with a bad solder it was still outputting 5V ~ 1.4 A. I would recommend these to any hobbyist and..." Read more

14 customers mention14 positive0 negative

Customers are satisfied with the quality of the power supplies. They mention that it is a good product, it has a constant 5V output, and it is reliable.

"...I usually purchase from Adafruit. These are well within the same level of quality." Read more

"These are amazing! Getting a constant 5V output (+/- .02). They hardly heat up to the touch even after an hour of use (24v input)...." Read more

"Quality items; great price !!! They all tested good in a breadboard test circuit !!" Read more

"Tried one so far. 4.97V output. Very good." Read more

12 customers mention12 positive0 negative

Customers appreciate the value of the power supply. They say it's a great buy and excellent value.

"...Came stuck in antistatic foam, which I like. Tested and approved. Great price...." Read more

"...I couldn't have asked fpr any better and the price was reasonable but now I have 4 left that I will probably never be able to find if I ever find..." Read more

"...Excellent for the price, beats Radio Shack any day of the week!" Read more

"Great price and product. Thanks!" Read more

4 customers mention4 positive0 negative

Customers appreciate the documentation that came with the power supply. They mention that it includes a diagram and schematic card.

"...in antistatic pink foam in a plain plastic bag, and came with an Addicore schematic card...." Read more

"Everything in the description was included, they provided anti-static protection for the components, and they were all in spec" Read more

"Beautifully packaged, Well protected, and it included a diagram for those not well acquainted with the part." Read more

"Good documentation, Work Great!" Read more

3 customers mention3 positive0 negative

Customers find the power supply simple to use.

"...Simple to use, and they are very accurate." Read more

"I use this for a small project and the instructions was easy to follow, i have no problems with it and i'm happy with the product." Read more

"Works perfect, simple enough. Recommend a heatsink if you push too much current or input voltage." Read more

3 customers mention3 positive0 negative

Customers are satisfied with the protection provided by the power supply. They mention that it is well protected and provides anti-static protection for the components.

"Everything in the description was included, they provided anti-static protection for the components, and they were all in spec" Read more

"Beautifully packaged, Well protected, and it included a diagram for those not well acquainted with the part." Read more

"These will keep your equipment safe for cheap" Read more

3 customers mention3 positive0 negative

Customers like the size of the power supplies. They mention it's small and requires very little space.

"...a whole lot to be said about these except they they work and require very little space...." Read more

"...Tiny so they can fit anywhere and out of the way inside the suite." Read more

"Good quality transister and small in size!" Read more

7 customers mention3 positive4 negative

Customers are mixed about the warmth of the power supplies. Some mention that they are properly heat sinked and don't get too hot, while others say that they get mighty hot.

"...They worked fine except that they got mighty hot even with relatively low current draw, so I used two of them and operated both at under 500 ma each...." Read more

"...I used these to turn 12V into 5 V on my breadboard.They didn't get too hot, and worked fine in my test circuits...." Read more

"Gets way to hot at 500ma. The same NTE branded regulator runs cooler at 1A. Will not get this again." Read more

"...Properly heat sinked, they bearly get warm. They come nicely pack with a a pin out card." Read more

Awesome 5v regulators
5 Stars
Awesome 5v regulators
At first I bought some really cheap 5v regulators from eBay but I was getting outputs of like 4.65v so I decided to get some quality regulators. When these came they none of the pins were bent and they came in anti static foam. When I tested them with a 9v battery I got a steady 5v ( + or - 0.01). I will definitely buy these again.(they also came with a small pin-out card so you know how to connect it)
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Top reviews from the United States

B. Barcellos
5.0 out of 5 stars Good quality, good price, nice packaging
Reviewed in the United States on May 7, 2016
Verified Purchase
These work as expected. I had a JBTek power supply board that crapped out (they used LM1117 regulators, I think) - the regulators started pumping out half the rated voltage. I used these to turn 12V into 5 V on my breadboard.

They didn't get too hot, and worked fine in my test circuits. None have burned out or been duds.

They came very nicely packaged in antistatic pink foam in a plain plastic bag, and came with an Addicore schematic card. It sounds trivial, but I was glad to not have to google the schematic. The packaging is standard for Addicore stuff, and is what sets their stuff apart, I think.
2 people found this helpful
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JayDubya
5.0 out of 5 stars Good regulators
Reviewed in the United States on July 11, 2017
Verified Purchase
I purchased these for a project where I wanted to use 12 vdc power for 5 vdc TTL ICs - I could have operated the ICs on 12 vdc, but that is pushing them and the 12 vdc source goes to over 14 vdc sometimes so I wanted that protection. They worked fine except that they got mighty hot even with relatively low current draw, so I used two of them and operated both at under 500 ma each. You can't run them in parallel to increase the output so I split the load - one runs only proximity switches and the other runs the ICs.

I added heat sinks to help defray the heating problem, although they really don't need it at 500 ma each - that is about 1/2 of their rated output.

The only problem I had with them was when I had failures in the pcb that shorted things out. They would handle the load, but they eventually began to go higher in output voltage level as high as 9 vdc due to this abuse. I think they are supposed to stop operating with their protective devices rather than start to output higher voltage. I only had two out of 10 do that. The others continue to pump out 4.99 vdc whether loaded or not.

I tried to use this device as a circuit controller where I had a 12 vdc input from a motor run circuit on a winch to indicate that the winch was turning in or out (two different regulators) and using the output to run IC gates, but they did not like being used in that manner, and they passed through the noise and motor spikes from high current switching as well. Took out a few ICs that way. So I changed them to photo couplers PC817 which took care of that problem and for about the same price. For that device I put a 470 ohm resistor in series with the 12 vdc input to run the LED and the output of the photo-transistor is connected through a 1000 ohm resistor to ground so that when the current flows the voltage rises to 3.5 vdc or so. Worked much better than the regulator, which was not designed for that function.
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nozamA
1.0 out of 5 stars Gets way to hot at 500ma. The same NTE branded regulator runs cooler at 1A. Will not get this again.
Reviewed in the United States on December 18, 2016
Verified Purchase
Gets way to hot at 500ma. The same NTE branded regulator runs cooler at 1A. Will not get this again.
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Wei G.
2.0 out of 5 stars Got these a few years ago and slowly used them ...
Reviewed in the United States on June 8, 2017
Verified Purchase
Got these a few years ago and slowly used them in some electronics projects. All of them either failed to boot or quickly failed after I connected power to them.
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mountainman90562
3.0 out of 5 stars Ok
Reviewed in the United States on August 26, 2016
Verified Purchase
I could not get it to work with a 9.6V battery to produce enough current/voltage for what I was using it for. It could have been my fault I am not sure.
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RC
4.0 out of 5 stars Worked great. One small inconvenience\concern...
Reviewed in the United States on November 18, 2014
Verified Purchase
No problems at all. If I had a concern, it was that the inputs vs outputs were only labeled on a tiny paper card included with the purchase. If this became lost, it would be very difficult to know how to connect it. Keep in mind, I am not an electrical engineer, nor was I using these in the standard way.
5 people found this helpful
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Wino
5.0 out of 5 stars excellent value. quick shipping. accurate at 5.03v if you are German like I am.
Reviewed in the United States on October 21, 2014
Verified Purchase
Fast delivery. Came stuck in antistatic foam, which I like. Tested and approved. Great price. There is essentially no legible marking on the ones I got, so keep them labelled. They explode well when you short them really badly across 12v hd supply. Not that I would ever do that. I'm far more careful than that. I tested several. The worst was 5.03v. In other words, 5v, unless you think the setup and measurement device don't introduce variance, or if you just live to quote high sigma decimals of accuracy. Review is now ended.
23 people found this helpful
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Devin Watson
5.0 out of 5 stars Reliable regulators
Reviewed in the United States on March 3, 2017
Verified Purchase
Used a few of these in some applications. The one thing that I always like about Addicore is that they take the time to package components in ESD-safe foam and with pinout reference cards. This has been extremely useful, especially with these and the 3.3V regulators I bought from them, which have different pinouts.

They have performed admirably so far in my prototypes, delivering a reliable 5V from a 6.6V source.
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