LM2596S DC-DC Buck Converter Power Supply

(52 customer reviews)

Out of stock

Approx Restocking Date: 25 to 30 Days
SKU: 11548
  1. Input voltage: 3-40V
  2. Output voltage: 1.5-35V(Adjustable)
  3. Output current: Rated current is 2A, maximum 3A
  4. Switching Frequency: 150KHz
  5. Operating temperature:Industrial grade (-40 to +85 )
  6. Conversion efficiency: 92%(highest)


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Brand: Generic
Category: Buck Converter
Tags: Power Supply, DC Power Supply, Voltage Regulator, Step Down Converter, Buck Converter, Multi Output Voltage, 3A Regulator, LM2596

DC-DC Buck Converter Step Down Module LM2596 Power Supply is a step-down(buck) switching regulator, capable of driving a 3-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, and an adjustable output version.

The LM2596 series operates at a switching frequency of 150kHz, thus allowing smaller sized filter components than what would be required with lower frequency switching regulators.

Generic Lm2596 Dc Dc Buck Converter Step Down Module Power Supply Output 1 3 1

This is an LM2596 DC-DC buck converter step-down power module with the high-precision potentiometer, capable of driving a load up to 3A with high efficiency, which can work with Freeduino UNO, other mainboards, and basic modules. When the output current keeps greater than 2.5A (or output power greater than 10W), please add a heat sink to it.

This device is internally compensated to minimize the number of external components to simplify the power supply design.

Since LM2596 converter is a switch-mode power supply, its efficiency is significantly higher in comparison with popular three-terminal linear regulators, especially with higher input voltages. The LM2596 operates at a switching frequency of 150 kHz thus allowing smaller sized filter components than what would be needed with lower frequency switching regulators.


This module does not come with Onboard SMD Status LED. Please refer SKU 699581 For Onboard SMD Status LED


  1. Input voltage:3-40V
  2. Output voltage:1.5-35V(Adjustable)
  3. Output current: Rated current is 2A, maximum 3A(Additional heatsink is required)
  4. Module Properties: non-isolated constant voltage module
  5. Rectification: non-synchronous rectification
  6. Short circuit protection: current limiting, since the recovery

Package Includes:

1 x LM2596S DC-DC Buck Converter Power Supply

Output current

Rated current is 2A, maximum 3A(Additional heatsink is required)

Switching Frequency


Operating temperature

Industrial grade (-40 to +85 )

Conversion efficiency


Load Regulation

± 0.5%

Voltage Regulation

± 0.5%

Dynamic Response speed

5% 200uS



Shipping Weight 0.011 kg
Shipping Dimensions 5 × 4 × 2 cm
15 Days Warranty

This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects.  Reimbursement or replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

Based on 52 reviews

4.7 overall

Add a review

  1. rajumia (verified owner)

    Good quality


  2. masselectronicsperundhurai (verified owner)



  3. Ebrahim Shaikh (verified owner)


    Ebrahim Shaikh

  4. Sam Abraham

    Good product and quick delivery

    Sam Abraham

  5. Sam Abraham

    Good product and quick delivery

    Sam Abraham

  6. omenterprisesrd (verified owner)

    Works fine. Connectors should be there for in out terminals


  7. Lompu Swargiary (verified owner)


    Lompu Swargiary

  8. santanun208 (verified owner)

    Good product.


  9. Anand Atole (verified owner)

    Good product and packing. Quick service.

    Anand Atole

  10. Jayachandran (verified owner)

    Works as expected.


  11. NANDAN ELECTRONICS (verified owner)

    Very good quality products


  12. sacttianan2012 (verified owner)

    Excellent Service and thanks


  13. SUDEEP OREYA (verified owner)

    working very well. good till 2amp more than that you need heat sink. it can go till 3amp.


  14. Sandesh (verified owner)

    Great product. I am using this to convert 12V DC to 5V DC. It runs without any problems. The output voltage is also constant. When I increase input voltage to 14 V, the output still gives 5V.
    The current drawn in my case is just over 100 mA, and the device can handle it easily without even getting warm.

    The trimmer pot (blue) needs to be turned many times to see the voltage change at output. So if you are not observing any voltage change at the output, turn the trimmer pot screw at least 20 turns (clockwise to increase voltage, counter-clockwise to decrease voltage).


  15. sidadharajasidadharaja782 (verified owner)

    missing LED


  16. Manpreet Deol (verified owner)

    great service of robu ?????????

    Manpreet Deol

  17. mayankloriya12

    I would suggest this product totally Great ? ? ?


  18. sanjeev.tomer (verified owner)

    Works good, ignore my previous review, it could not rotate the adjuster enough. Good one works like a charm!


  19. mayurvbhoir (verified owner)

    value for money,
    working fine.
    quality is very good.


  20. Satyakam Srivastava (verified owner)

    excellent product i used it for my CAR AUDIO DIY project, running excellent.

    Satyakam Srivastava

  21. xbox123456789gamer (verified owner)

    Good and cheap


  22. arindumroy2000 (verified owner)

    Very Good


  23. Shivraj Jangada (verified owner)

    good product

    Shivraj Jangada

  24. subhankarmajumder1433 (verified owner)

    good product…


  25. Harsh Pandey harsh pandey Harsh Pandey Harsh Pandey


    Harsh Pandey harsh pandey Harsh Pandey Harsh Pandey

  26. Nandakumar (verified owner)

    Very Good Product, cheap and high accurate output


  27. akhilrkarivannur (verified owner)

    Good quality product


  28. vinesh (verified owner)

    The product looks good,but since I haven’t used it yet,It’s a bit premature to give a meaningful feedback..


  29. D T Vijayaraj (verified owner)

    We used it for converting 24 V to 5 V, results are good.

    D T Vijayaraj

  30. Sharathkumar Shetty

    Good product for the Money paid

    Sharathkumar Shetty

  31. ananthunalloor (verified owner)

    works well, great product


  32. Nandakumar (verified owner)

    Good Product , and Very Low Price


  33. kamalakar (verified owner)



  34. debrajdeb123 (verified owner)

    Good product at competitive price. I purchase the modules to take inductors, as purchasing inductors as single piece is more expensive.


  35. avinash kumar (verified owner)

    perfect , compact and cheaper there other online sale

    avinash kumar

  36. Sanjay Tiwari (verified owner)

    great product

    Sanjay Tiwari

  37. Sundeep Budhraja (verified owner)

    Overall, the product is good. However, the trimpot used in it is of a poor quality unlike the one shown on the website.

    Sundeep Budhraja

  38. Sonu Chaurasia (verified owner)

    It’s look good but out voltage dosent chane while turning potentiometer but voltage remain sain

    Sonu Chaurasia

  39. R.SURENDRAN (verified owner)



  40. sakib (verified owner)

    very good product


  41. Rajnikant Patel

    Good Product and price

    Rajnikant Patel

  42. Lalit (verified owner)

    Good and value for money


  43. Raghavendra

    Dc/dc converter PCB quality is good. We will use it for a while and connect on reliability. But overall we are happy.


  44. SUJEET KUMAR YADAV (verified owner)

    Good product for rc hobby


  45. Deb (verified owner)

    good product… good price….


  46. Tanmay (verified owner)

    You can read my diy article based on this module at EFY’s website. Perfect product with perfect pricing.


  47. Akash



  48. Chris Thaliyath (verified owner)

    Very good product

    Chris Thaliyath

  49. ROY CHAKKALAKKAL (verified owner)



  50. Sivasubramanian (verified owner)

    Product is very good and the price is also very competitive.


  51. Thangavel (verified owner)

    Good product, very very best price super


  52. bhavesh (verified owner)

    good product at best rate



Questions and answers of the customers

  1. 0 votes
    Q Can i convert 5v input to 12 v output using this? answer now
    Asked by stm.saurabh94 on June 17, 2023 3:11 pm
    A NO, For that you need XL6009
  2. 0 votes

    It will give you the constant 9V DC output but,... Read more

  3. 0 votes

    In both cases, the maximum constant current you... Read more

  4. 0 votes

    The LM2596S is a DC-DC buck converter is design... Read more

  5. 0 votes

    It depends of current drawn by your battery, As... Read more

  6. 0 votes
    Q Can i provide 5400mAh, 11.1V, 25C Lipo battery Input? answer now
    Asked by yashwanth1kmm on December 14, 2020 11:30 pm


  7. 0 votes
    Q can connect 6 volt 9 volt 12 volt bettery ? answer now
    Asked by fahimgis on October 10, 2020 3:02 pm
    A yes you can but remember, input voltage should be ... Read more
    A Yes. It can be connected to any type of DC supply ... Read more
    A yes you can connect upto 40volt battery
  8. 0 votes
    Q can I use this buck converter to charge my phone? answer now
    Asked by Vivekanand kumar on September 7, 2020 2:59 pm
    A Set the output to 5V to charge your phone
    A It can be used I guess. You should match the outpu... Read more
  9. 0 votes
    Answered by the admin

    No, it requires Dc input. kindly do not connect... Read more

    A You can use a full bridge rectifier between the tr... Read more
    A You will have to use a rectifier circuit connected... Read more
Only registered users are eligible to enter questions
Country Of Origin: China

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