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RioRand LM2596 DC-DC Buck Converter Step Down Module Power Supply Output 1.23V-30V (1Pcs-LM2596)

by RioRand

166 customer reviews

| 49 answered questions

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$5.95 | Fast, FREE Shipping with Amazon Prime

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Sold by NooElec and Fulfilled by Amazon. Gift-wrap available.

Color: DC 3V to 40V

Input: DC 3V to 40V (input voltage must be higher than the output voltage to 1.5v above can not boost)
Output: DC 1.5V to 35V voltage continuously adjustable, high-efficiency maximum output current of 3A.
Features: All SANYO solid capacitors, the 36u thickening circuit boards, high-Q inductance with output value of high-power LED indicator
Dimensions: 45 (L) * 20 (W) * 14 (H) mm (with potentiometer)

3 new from $2.99

RioRand LM2596 DC-DC Buck Converter Step Down Module Power Supply Output 1.23V-30V (1Pcs-LM2596)

$5.95 | Fast, FREE Shipping with Amazon Prime In Stock. Sold by NooElec and Fulfilled by Amazon. Gift-wrap available.

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Color: DC 3V to 40V

Technical Details

Color: DC 3V to 40V

Brand Name: RioRand
Model Number: RRLM25961.23-30V

Product Description

Color:DC 3V to 40V

Input: DC 3V to 40V (input voltage must be higher than the output voltage to 1.5v above can not boost) Output: DC 1.5V to 35V voltage continuously adjustable, high-efficiency maximum output current of 3A. Features: All SANYO solid capacitors, the 36u thickening circuit boards, high-Q inductance with output value of high-power LED indicator Dimensions: 45 (L) * 20 (W) * 14 (H) mm (with potentiometer)

Product Information

Color:DC 3V to 40V

Product Dimensions

3.4 x 2.4 x 0.4 inches

Item Weight

0.8 ounces

Shipping Weight

0.8 ounces (View shipping rates and policies)

Manufacturer

RioRand

ASIN

B008BHAOQO

Item model number

RRLM25961.23-30V

Customer Reviews

166 customer reviews

4.0 out of 5 stars

Best Sellers Rank

#119 in Electronics > Accessories & Supplies > Batteries, Chargers & Accessories > Power Converters

Date first available at Amazon.com

June 14, 2012

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Customer Reviews

166

4.0 out of 5 stars

5 star		64%
4 star		13%
3 star		7%
2 star		4%
1 star		12%

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Top Customer Reviews

Extremely Accurate

ByJEFFERY MCGHANon November 21, 2012

Color: DC 3V to 40VVerified Purchase

The details on the ad sucks .........This is a great little converter is stable to one hundredth of a volt ........On my FLUKE 87 . Even with a load the voltage did not fluctuate at all when I swept from 12.5v to 18v on the input for testing .The output voltage was set at 7.45v and remained at 7.45v . However I found that if the input voltage drops to close to the output voltage the output voltage will start dropping . Load will also effect the voltage variance with low input voltage . I hope that this helps you

55 comments 66 people found this helpful. Was this review helpful to you?YesNo

Using as Power Supply for Raspberry Pi

ByThomas Didymuson May 8, 2013

Color: DC 3V to 40VVerified Purchase

I bought this to efficiently run a Raspberry Pi from a 12VDC lead-acid battery. It not only runs the Pi, but a powered USB hub with some high-current USB peripherals as well. Everything runs great and very stable, even as the input voltage varies (this is due to solar charging). I was originally going to build one of these myself, but it's mighty hard to beat Amazon's price on a fully-assembled unit, especially when you consider shipping costs from most discrete component suppliers.

22 comments 20 people found this helpful. Was this review helpful to you?YesNo

good product, great service

ByBobKon July 1, 2013

Color: DC 3V to 40VVerified Purchase

I bought one of these to use in a couple of projects. When it arrived I had some problems with it, and emailed the vender for help. Within a few hours I received an answer (from China) with a few suggestions and questions. I emailed back - and within a day I got a reply that they had shipped me a new unit! Excellent service I think! The second one works great. I like the product and I'll be ordering a few more of them. The only down side is that shipping from China takes a couple of weeks. Not usually an issue for me.

By the way, the problem I was having was probably my fault in the first place. The device arrives with the potentiometer set for near maximum output voltage. It also adjusts very slowly and takes many turns counter-clockwise to see any voltage changes at the output. The output voltage always appeared to be .5V less than the input and it didn't seem to me that the potentiometer had any effect. However, this is actually a feature and allows the output to be precisely adjusted. Just persevere and keep turning it CCL and you'll eventually see the output voltage drop.

11 comment 18 people found this helpful. Was this review helpful to you?YesNo

Warning 35 volt input MAX, not 40V!!!!

ByJetguyon August 31, 2013

Color: DC 3V to 40V

The product is actually pretty good an loosely follows the suggested circuit for the regulator data sheet. The main problem is the use of a 35V cap on the input. With any capacitor, you never, ever exceed the rated voltage. They can and will fail dead short and blow up.
In fact, we normally never use anywhere near the max rated voltage stamped on a capacitor. So with it being 35V rated, MAX recommend input is roughly 30V making the output a safer 28.5 voltts since both caps are rated 35 volts and the input must be about 1.5 volts higher than the output. The best and easiest thing to do is just change the rating to match the actual components used.
Ideally they should have used 50 volt rated caps. Also note that per the suggested circuit in the data sheet, you should have a larger value 680uF VS the current 220uF.
[...]
Again, it's not a bad circuit and it works, just don't run it up to the max voltage rating. Hopefully they will change the rating but this review is for those who already bought or are looking and need that high of an input rating.

44 comments 38 people found this helpful. Was this review helpful to you?YesNo

Great little Buck.

ByAlbeon June 5, 2013

Color: DC 3V to 40VVerified Purchase

Hooked this little guy of to a nice power supply and a oscilloscope and gave it a work out. Once set to the desired output voltage, changing the input voltage or load had almost no effect on regulation. I've been using to drive parts-express's BT-1A Bluetooth module in my car and it's holding up quite well. Can take the Florida heat and the abuse of being in a car and still hasn't changed its output voltage from 5V. The price is excellent and I recommended this to all of my engineering friends.

33 comments 22 people found this helpful. Was this review helpful to you?YesNo

used for my raspberry pi worked great

BySeanon May 20, 2013

Color: DC 3V to 40VVerified Purchase

Powered pi and attached arduino without a problem from a lipo 7v battery. Measured around .5 amps at 7 v continuous

0Comment 10 people found this helpful. Was this review helpful to you?YesNo

Just works

ByThomas Simmonson May 10, 2013

Color: DC 3V to 40VVerified Purchase

You can't even buy the components to build this as cheap as this assembled power buck. And if you are making your own trailcam or setting a DSLR up for Astronomy, then this puppy will be one of the components you need. Use a power meter to adjust the voltage, then check it with the camera up and running.

Basic stuff here, folks. But verify whatever you are hooking up to this doesn't exceed the limiters amp rating.

0Comment 7 people found this helpful. Was this review helpful to you?YesNo

Nifty gadget

ByG. Boultonon November 19, 2012

Color: DC 3V to 40VVerified Purchase

Does just what it's designed to do...steps down DC voltage. Input and Output connections are clearly labeled, output voltage is easily adjustable. Quite a handy little hobby gadget.

I use it outdoors in below freezing temps, doesn't seem to bother it at all.