McIgIcM 5pcs DC-DC Step Down Converter Module LM2596 DC 4.0~40 to 1.3-37V Adjustable Voltage Regulator Hot sale Free shipping

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Product Features

The use of anti-static packaging products, to avoid the potential harm of static electricity

All products are tested for stability, consistency and reliability. Ensure product excellence.

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This product is widely used in product development, student experiments, maintenance, production, etc.

If you have any questions, please contact us

Product Description

1. The Fixed turn the lamp current to 0.1 times the value of the constant current (at the when 2 identify been the ‘is full);
2. Increased input reverse polarity for protection, diode;
3. Using dedicated reference for IC, and high – precision from the resistor, so that the constant current is more stable, (20 degrees to 100 degrees, the constant current 1 a, when the temperature drift of less than 1%).

Particularly suitable for the LED driver
* High – power LED constant current drive
* Lithium ‘charger (o ferroelectric)
* 4 v, 6 v, 12 v, 14 v, 24 v ‘charger
* Nickel cadmium, Nickel metal hydride ‘pack charger
For * Solar panels and wind turbines


* the Module Properties: non – isolated constant current and voltage of the Module
* Rectification: non – synchronous Rectification
* Input voltage: 7 v – 35 v
* the Output voltage: 1.25 V – 30 V
* the Output current: adjustable maximum 3 a
* Conversion efficiency: 92% (the highest)
* Switching frequency, 150 KHZ
* the Output ripple: 50 mv (Max) 20 m bandwidth
* the Load Regulation: plus or minus 0.5%
* Voltage Regulation: plus or minus 2.5%
* Operating Temperature: – 40 ° to + 85 °

‘the use:

* Make sure of the voltage and current of the ‘you need to charge
* Adjust the constant voltage potentiometer to make the output voltage same to the charge voltage
* Potentiometer Adjustment Direction: Clockwise (happens), counterclockwise (decrease)
* Use the multimeter in 10 a current scale to measure the output short – circuit current, and adjust the current potentiometer to make sure the output current to the expected charging current value
* The charge current of transfer lamp is The default 0.1 times of The charging current (constant current value)
* Connected to the ‘and try to charging (for previous five steps, the module input terminal is Connected to the power source, the output load is NOT Connected to batteries).

LED Constant Current Driver Use:

* Make sure operating current and Max operating Voltage of the LED you need to drive.
* Adjust the constant voltage potentiometer to make sure the output voltage is up to the LED Max operating voltage.
* Use the multimeter in 10 a current scale to measure the output short – circuit current, and adjust the current potentiometer. To make sure the output current to the expected LED operating current.
* Join the LED test (For the above three steps, the module input terminal is connected to the power source, the output load is NOT connected to the LED).

The scope of application:
Charging for lithium ion batteries: the when the lithium ion ‘voltage is low. If use the constant voltage Charging directly. Due to pressure is too large, leading to the’ damage. So from the beginning to use the constant current Charging. When Charging the to a certain, automatic switch back to the constant voltage Charging.

Charging curve as to: red is current, blue is voltage.

Package Include:

5x Step Down Module LM2596


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Item Specifics
Brand Name:
Operating Temperature:
module of lm2596
Supply Voltage:
module dc-dc
Model Number:
Dissipation Power:
module lm2596
IC module
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Packaging Details

 lot (5 pieces/lot)
0.06kg (0.13lb.)
5cm x 5cm x 1cm (1.97in x 1.97in x 0.39in)

Packaging Details

 lot (5 pieces/lot)
0.06kg (0.13lb.)
5cm x 5cm x 1cm (1.97in x 1.97in x 0.39in)


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How do you ship packages?

Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.

Do you ship worldwide?

Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.

What about customs?

We are not responsible for any custom fees once the items have shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.

How long does shipping take?

Shipping time varies by location. These are our estimates:
Location *Estimated Shipping Time
United States 10-20 Business days
Canada, Europe 10-20 Business days
Australia, New Zealand 10-30 Business days
Central & South America 15-30 Business days
*This doesn’t include our 2-5 day processing time.

Do you provide tracking information?

Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.

My tracking says “no information available at the moment”.

For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.

Will my items be sent in one package?

For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you've specified combined shipping.

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Order cancellation

All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.


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If you did not receive the product within the guaranteed time( 45 days not including 2-5 day processing) you can request a refund or a reshipment.

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*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on Contact Us page

If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.


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