LM2596 2A Buck Step-down Power Converter Module DC 4 ~ 40 to 1.3-37V LED Voltmeter

(12 customer reviews)

In stock

SKU: 11553
  1. Input Voltage(VDC): 4 ~ 40.
  2. Output Voltage(VDC): 1.3 ~ 37.
  3. Output Current: 2A Rated, ( 3A maximum with heat sink).
  4. Switching Frequency: 150 kHz.
  5. Input reverse polarity protection.
  6. Built-in output short protection function.


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Category: Buck Converter
Tags: Power Supply, DC Power Supply, Voltage Regulator, Step Down Converter, Buck Converter, Multi Output Voltage, 2A Regulator, LM2596

This is LM2596 2A Buck Step-down Power Converter Module DC 4 ~ 40 to 1.3 ~ 37V, it comes with a built-in voltmeter display and uses an advanced microcontroller.

Together with its high precision multi-turn potentiometer, this means any desired output voltage within its supply range can be set without the need for an external voltage meter. The module also boasts a very high operating range with a DC input supply range of 4 ~ 40V and an adjustable output range of 1.3 ~ 37V.

Notes: Maximum current is dependent on input and output voltages, ambient temperature and cooling. To achieve maximum ratings an external heatsink may be required. Maximum LM2596 operating temperature must not exceed 125°C otherwise permanent thermal damage can occur.

Features :

  1. Input reverse polarity protection
  2. Built-in output short protection function
  3. The built-in thermal shutdown function
  4. Press the right key to let the display show the input or output voltage. when the right “OUT” led light, it shows output, the left “IN” led show input.
  5. Power-off memory function, show that road after power voltage values measured for the last time
  6. Press the touch button for 3 seconds to turn off the LED display, touch the button again to turn on the LED display
  7. The band terminals, no iron can also be easy to use, and retention wire connection point

Package Includes :

1 x LM2596 2A Buck Step-down Power Converter Module.

Input Voltage (V)

4 ~ 40 VDC

Output Voltage (VDC)

1.3 ~ 37

Max. Output Current (A)


Switching Frequency(KHz)


Operating Temperature (°C)

-40 to 90

Length (mm):


Width (mm):


Height (mm):


Weight (g):


Shipping Weight 0.025 kg
Shipping Dimensions 7 × 4.5 × 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. 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 12 reviews

4.9 overall

Add a review

  1. mpbharathi093 (verified owner)

    Great quality


  2. NaveenR (verified owner)

    An affordable solution for DC-to-DC conversion! Works beautifully! Delivered to Chennai in literally 1 day!


  3. arbab.ahsan3 (verified owner)

    It has LED too, perfectly working
    Delivered on time , Thank you Robu!!


  4. jayesh.y10 (verified owner)

    It worked as expected.


  5. lamachino (verified owner)

    Good product, stable output.
    Regarding endurance & life reliability shall update later


  6. e.moosa (verified owner)

    I am satisfied with the products and its cheaper. It work perfect in my 3D printer, which I converted to Laser Printer as well. I have no other comments to make other than Fedex delivery which took a week.


  7. Vivek (verified owner)

    Good product. Works well.
    But they should avoid sending by Fedex. Fedex took one week for deliver from the shipping date. They made fake entry without delivery for 2 days in Chennai. After my complain only they deliver the parcel.


  8. bennur.praveen (verified owner)

    Works perfectly with direct input from my Solar panel(12v 50w). Doesnt get heated even after 5+ hrs of continuous usage,but with onset of summer and temperature shooting more than 40 in march-april it will be its real test.


  9. ganeshniranj (verified owner)

    Works as specified


  10. Manojit Majumder (verified owner)

    its works really well with my 12v lead acid battery .

    Manojit Majumder

  11. R.SURENDRAN (verified owner)



  12. esrpradeep (verified owner)

    DC step down module with LED display is a good feature (+ calibration ) for electronic hobbyists.


Questions and answers of the customers

    can this be used for a DC device with PS rating 5V... Read more
  1. 0 votes
    Q can this be used for a DC device with PS rating 5V 0.6A? answer now
    Asked by sivageethan on June 29, 2021 3:34 pm
    A Yes, the LM2596 2A Buck Step-down Power Converter... Read more
  2. I want to use NHP 24V 5A 120W Switch Mode Power Su... Read more
  3. 0 votes
    Q I want to use NHP 24V 5A 120W Switch Mode Power Supply (SMPS) as input to this buck converter. Wh...... Read more answer now
    Asked by anoopakgeck on May 28, 2021 12:30 pm
    A Yes, you can use your NHP 24V 5A 120W SMPS as an i... Read more
Only registered users are eligible to enter questions
Country Of Origin: China

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