5pcs MP1584 3A Adjustable DC Step Down Converter Buck Module 3.3V 5V 9V 12V 24V

US $8.49/ea
Condition:
New
1,801 sold
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Located in: Indianapolis, Indiana, United States
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Estimated between Fri, Sep 5 and Tue, Sep 9 to 94104
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eBay item number:132416728307
Last updated on Aug 30, 2025 13:10:25 PDTView all revisionsView all revisions

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ...
Brand
JacobsParts
MPN
DCMOD-I-ADJ
Current Conversion
DC to DC
Country/Region of Manufacture
China
Conversion Direction
Step-Down
UPC
845832027814
Category

Item description from the seller

About this seller

JacobsParts Inc

99.4% positive feedback1.4M items sold

Joined Nov 2005
Usually responds within 24 hours
Welcome to JacobsParts eBay store. We specialize in computer accessories. We value your business!

Detailed seller ratings

Average for the last 12 months
Accurate description
4.9
Reasonable shipping cost
5.0
Shipping speed
5.0
Communication
5.0

Seller feedback (455,901)

All ratings
Positive
Neutral
Negative
  • o***6 (217)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    I’ve bought many of these and similar modules. This is the first time I bought them on eBay. I have always bought them on Wish and recently Amazon (which ended up being the worst). These little guys are stable as he*l and are surprisingly durable. I thought they would burn out like the similar sized ones from Amazon, in less than a minute. I’m using them on some 5v lights that I’ve installed on a fj40 restoration. No issues whatsoever. Thank you for making a great quality USA product!
  • r***o (694)- Feedback left by buyer.
    Past month
    Verified purchase
    arrived quickly excellent quality. i have not used it yet but is as described.
  • 6***c (146)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Greta! Thanks!
See all feedback

Product ratings and reviews

4.2
14 product ratings
  • 10 users rated this 5 out of 5 stars
  • 1 users rated this 4 out of 5 stars
  • 1 users rated this 3 out of 5 stars
  • 0 users rated this 2 out of 5 stars
  • 2 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

  • Top favorable review

    Excellent converter. Very low idle draw. Very minimal voltage ripple

    I am going to share my experience of testing and using this device. My application was putting it in my car for bluetooth audio purposes. This meant taking a 13.8v input and converting it down to 5v. First, a comment on size and quality. The converter is about the size of a quarter. All solder joints looked fine to me. I didn't notice any cracking or oxidation in the joints. Now on to my testing. I used a very high quality HP benchtop supply, a Fluke voltmeter, an IR temperature meter, some 2-10ohm 100W resistors, and a DSO 138 oscilloscope. Using these I tested the converter at various loads to determine voltage ripple and temperature. Looking at the first photo is the hottest temperature observed at about 500mA load. No complaints here. The next photo is the voltage ripple ...

    Verified purchase: YesCondition: NewSold by: jacobsparts

  • Top critical review

    Good value, but applications may be limited

    I should've checked the driver datasheet and compare with the item photo. The item uses a 4.7uH inductor, which is too low unless you use this for 1.8V output according to the datasheet. This can be played with by other parameters, such as switching frequency and a compensation circuit though. I started with 12V input and 5V output with a DMM, and thought it seems doing what it's supposed to do. Then, I tried 12V input and 3.3V output. At a lighter load, no problem, but with a heavier load >1A, I noticed higher voltage than what it's set to. So, I pulled my o-scope. 0.1A load, no problem, seems reasonably quiet (< 20mV p-p). But at 1A load, it's basically ringing/oscillating, >800mV p-p. I tried a few different 12V power supplies, but nothing helped there. I looked into the item, and was ...

    Verified purchase: YesCondition: NewSold by: jacobsparts

  • MP1584 modules, jacobsparts ==>> Winning Combo

    Homeboy DIY, Not E-guru: MP1584 Adjustable DC Step Down Module from jacobsparts is a Winner. Form factor is perfect; big enough to easily work with, small enough to pack in most anywhere. (kapton tape is huge; Altoids tins etc., high-end hot-melt glue => great! {if heat's Truly a prob, use Sikaflex}) FWIW: These modules do show a notable start > spike. @ 28V in, 11.1V out, start spikes usually 13+V; per Fluke 87V peak-min/max (stores read @ > 250 μs in duration, i.e. micro-seconds). Meaningless, except …. Finally, for you DIY Girls&Boys: Best thing I ever did was cough up for a used Fluke 87V.

    Verified purchase: YesCondition: NewSold by: jacobsparts

  • MP1584 Module is a good product

    This DC DC converter is very small, but works OK

    Verified purchase: YesCondition: NewSold by: jacobsparts

  • Good

    I used only one so far in a spider project. Holds voltage pretty steady. Good small package.

    Verified purchase: YesCondition: NewSold by: jacobsparts