LM2596 DC-DC Adjustable Buck Module

€2,90

SKU: TB-ACC-DC01

📦 Location of the warehouse: Munich

8 in stock

🚚 We will ship your order within 24 hours after the order is taken.

Type: Standard version

Standard version 5A high power version

Product variants

Quantity

Free Shipping from 30€ in Germany, 50€ in the EU!

- Germany Delivery Time: 1~3 working days.

- EU Countries Delivery Time: 3~8 working days.

- Other Countries Delivery Time: 2~2.5 weeks.

- Pre-Ordering: If an item is unavailable, you can pre-order it. We'll dispatch once stock is replenished, usually within 10 working days. Special pre-sale products will specify the expected arrival time in the description.

- Express Shipping: Need it faster? Contact us via email or through our live chat support, and we'll arrange expedited delivery for you.

LM2596 DC-DC Adjustable Buck Module

Application

This module can be used in the step-down field where the input voltage is higher than the output voltage, such as batteries, power transformers, DIY adjustable regulated power supplies, 24V vehicle notebook power supplies, industrial equipment step-down, 12V to 3.3V, 12V to 5V, 24V to 5V, 24V to 12V, 36V to 24V, etc.

Features

With voltmeter display, voltmeter error ± 0.1V, range 4 ~ 40V. (Note: if the input voltage is lower than 4V, the onboard voltmeter does not work and does not display)
Large volume 5*5 touch the button to switch the measurement input or output voltage, and there is an indicator light to show which terminal voltage is being measured. The default digital tube displays the input voltage at the first boot, and the input indicator IN is on; touch the button, the digital tube displays the output voltage, and the output indicator OUT is on. And keep the last setting, even after power off and on again
The voltmeter can be turned off, long pressing the switch for more than 1 second and less than 4 seconds, and releasing it to turn off. After the voltmeter is turned off, just short press the switch to turn on the voltmeter.
Input and output voltage measurement error calibration function, long press the switch for more than 4 seconds, and then enter the voltage measurement error calibration function after letting go. At this time, the IN light is on (calibration input terminal), and the digital tube flashes to display the correct value (the factory parameter is 0.0) , at this time, short press the button to change the value (the value range is -0.5~0.5, the unit is V), a positive number means upward calibration, and a negative number means downward calibration. After adjusting the calibration value of the input end, press and hold the button for more than 2 seconds, and then let go of the error calibration of the output end. At this time, the OUT light is on (calibrating the output end), and the calibration value of the output end is displayed. The adjustment method is the same as that of the input end. After the calibration value of the output terminal, press and hold the button for more than 2 seconds. After letting go, the set value will be saved and the voltage will return to normal display voltage. The set calibration value will take effect immediately and will not be lost after power failure. (With this function, you can meet your higher precision requirements)
With terminals, it is easy to use without a soldering iron, and the soldering wire connection points are reserved(The input voltage is more than 1v higher than the output voltage)
Using the internal oscillation frequency of 150KHz, it belongs to the second-generation switching voltage regulator, with low power consumption and high efficiency
The input end is protected by two tubes, and the reverse connection will not burn the module
With overheat protection and short circuit protection (please strengthen heat dissipation if more than 15W)

Specification

Input voltage:	2.5V~40V
Output Voltage	1.25V~37V（adjustable）
Output Current	3A（Max）
Conversion Efficiency	92%（Max）
Output ripple	<30mV
Switching Frequency	150KHz
Working Temperature	-45℃~ +85℃

Size

Product size: 66mm * 36mm * 14mm (LxWxH)
Product weight: 23g (including packaging) Color: blue Packaging: electrostatic bag packaging

Precautions

It is a large output current up to 3A, the recommended working current is about 2A, more than 2A plus heat sink
When encountering the problem that the output voltage cannot be adjusted and is always equal to the input voltage, please turn the potentiometer counterclockwise for more than 10 turns, and then use the module to adjust the voltage normally. Because this step-down module leaves the factory, the default output voltage is about 20V.

1. General Shipping Information

We provide premium shipping methods with a tracking number for each order.
Shipping address should be input in English without any special symbols to help the courier company recognize your address in the system. We will ship according to the shipping address you provided. Please notify us of any address change before your order is marked "Shipped" to avoid parcel loss.
Please contact our customer service staff immediately if you need to cancel or change an order. Once your order has reached "Shipped" status, it can no longer be canceled or changed in any way. To avoid complications, please recheck your shopping cart before checkout.
We can ship all in-stock orders within 1 business day as your order has been confirmed.
All items are inspected before dispatch and are carefully hand-packed.
With standard courier practice, you need to check the contents of the parcel before signing for your goods. Otherwise, we will not be held responsible for any damage that may have occurred in transit.

2. Shipping Options for Germany and EU* countries

(For Products in Munich Warehouse)

2.1 Shipping options for an order value of up to €30 inside Germany or €50 inside the EU*

Shipping Options:

Shipping Options	Germany	EU*
Deutsche Post	€3.5 Arrive in 3-4 Business Days	€6 Arrive in 5-9 Business Days
DHL Paket	€6 Arrive in 2-3 Business Days	€15 Arrive in 3-7 Business Days
DHL Express	€14 Arrive in 1-2 Business Day	€65 Arrive in 2-3 Business Days

2.2 Free shipping options for an order value of above €30 inside Germany or €50 inside the EU*:

Free Shipping Options	Germany	EU*
Deutsche Post	Free Above €30	Free Above €50
DHL Paket	+ €2 for Above €30 / Free Above €60	+ €8 for Above €50 / Free Above €80
DHL Express	+ €10 for Above €30	+ €60 for Above €50

Certain EU Countries are not included in our EU Zone definition: United Kingdom (excluding Ireland), Switzerland, Liechtenstein, Vatican City, Albania, Belarus, Norway, Ukraine, and Iceland. For the above countries, the International Shipping Rule applies.

2.3 Shipping Options for International Countries:

(via Deutsche Post or YunExpress)

Order Amount	International
€0 - €15	€8
€15 - €30	€7
€30 - €50	€6
€50 and above	€4

Important Notice:

Please verify the inventory location on the product page before placing your order to confirm delivery timeframes.
For products in the Shenzhen warehouse, we will typically first ship the products from the Shenzhen warehouse to our Munich warehouse, which will take around 1.5 weeks. After we receive the shipment in Munich, we will send the items to you. We will only arrange YunExpress shipping from Shenzhen for orders with products in the Shenzhen warehouse worth more than €50.
If you place an order with products from both Munich and Shenzhen warehouses, we will first ship the products in the Munich warehouse, and then send the remaining products to you when we receive them from Shenzhen.

3. International Warehouse

Our products are stored in both our Munich and Shenzhen warehouses to provide more flexible logistics solutions tailored to different regions and customer needs. On each product's description page, we indicate the specific warehouse location to help you better plan your purchase and delivery schedule.

3.1 German Warehouse

For products stored in our warehouse in Munich, we use either Deutsche Post or DHL for shipping, depending on the size of the package. Logistics within Germany are very efficient, with an estimated delivery time of 2-4 business days, ensuring you receive your order quickly and conveniently. For Western EU countries, the estimated delivery time is 4-6 business days. For Eastern EU countries, the estimated delivery time is 6-8 business days.

3.2 Chinese Warehouse

We will only arrange YunExpressexpress shipping from Shenzhen for orders with products in the Shenzhen warehouse worth more than €50. Orders directly shipped from our Shenzhen warehouse are handled by YunExpress. Given the complexities of international shipping, the estimated delivery time for these packages is around 10 business days, though this may vary slightly due to customs processes or other uncontrollable factors. Otherwise, the products will first be shipped from China to our Munich warehouse and then shipped to the final destination.

To ensure that your order is delivered within your desired timeframe, we recommend reviewing the warehouse information provided on the product pages before placing your order and selecting the appropriate shipping option. If you have any questions or need further assistance, please don't hesitate to contact our customer support team—we are here to help you!

4. Customs and Taxes

4.1 How are customs handled by OpenELAB for import or export?

Whether shipped from Germany or China, we cover all import duties and taxes, ensuring that you receive your package without any additional costs or hassle with customs.

4.2 How is VAT charged when the Customer places an order from OpenELAB?

In accordance with the newest VAT e-commerce rules in the EU, OpenELAB shall have the right to charge the amount of VAT. The standard rate of actual VAT applied is subject to the European government's freedom to set the number and level. Such an amount of VAT will be charged when you place an order from OpenELAB. Please contact OpenELAB if you have any questions when you pay such VAT.

4.3 What kind of fee will be charged except VAT?

Except for the VAT, OpenELAB will charge any handling fee when you are placing any purchase orders, which includes but is not limited to customs duty, import VAT, freight costs, etc. Customs duty and import VAT will be paid on the importation of goods from outside the EU into an EU country, and such amount is calculated as a percentage of the customs value of goods. Please note that it may take 1-2 working days for Deutsche Post/DHL/FEDEX or 3-4 working days for YunExpress for the status to update.

Effective Date: March 27, 2025

At OpenELAB, we are committed to providing accurate product descriptions and delivering high-quality products. If you experience any issues with your purchase, please notify us within 30 days of the shipment date.

1. Warranty Disclaimer

Unless explicitly stated in a specific agreement or purchase order, OpenELAB makes no warranties—express or implied—regarding the fitness, suitability, or merchantability of any product for a particular purpose or special use.

2. Warranty Policy

Warranty Period

The standard warranty period for products sold by OpenELAB is 12 months from the date of delivery.

Under this warranty, OpenELAB will make a reasonable effort to repair or replace products free of charge if defects are due to issues with raw materials, design, or manufacturing.

If the defect qualifies under this policy but falls outside the covered scope, reasonable charges may apply for repair or replacement.

After the warranty period, support may still be available at a reasonable fee.

Warranty Exclusions

The warranty does not apply in the following cases:

The product is beyond the 12-month warranty period.
Damage due to misuse, improper maintenance or storage, or failure to follow the user guide or manual.
Issues caused by Force Majeure events (e.g., natural disasters, war, legal changes, etc.).
Unauthorized repair attempts by the customer.
The product is not defective but has been opened and is non-returnable by policy.

3. Returns & Refunds

If you're not satisfied with your purchase, you may be eligible for a return or exchange:

Return for Refund: Within 15 days of receipt (unopened).
Return for Replacement: Within 30 days of receipt (damaged or defective).
Exchange Window: Up to 30 days from receipt.

Please email us at info@openelab.io for a return authorization before sending anything back.

Return Conditions

Items must be in original, clean, and mint condition with packaging intact.
Returns of damaged, used, scratched, modified, or programmed items will not be accepted.
Include the receipt, a brief note with your name, order number, and reason for return.

Shipping & Fees

Customers are responsible for return shipping to our warehouses in Europe, the US, or China.
Refunds may be subject to additional shipping fees unless the return is due to our error.
A flat €8 shipping fee will be deducted for returned items that originally qualified for free shipping.

Payment Platform Fees

For refunds processed through third-party platforms such as PayPal or Braintree, a standard 3.5% service fee may be deducted to cover payment processing costs.