Specification :
Module Properties: non-isolated step-down constant current, constant voltage module(CC CV)
Input voltage: 7-35V
Output voltage: 1.25-30V adjustable
Dropout voltage: input voltage must be higher than output voltage of 2V
Output current: 0-3A, 3A maximum
Output power: 15W (If the temperature is high, please strengthen heat dissipation)
Conversion efficiency: 92% maximum (the higher the output voltage, the higher the efficiency)
Module size: 49*23.4*11.4mm

Turn lamp current: constant current value * (1% -100%), turn lamp current and constant current value linkage, such as constant current value is 3A, turn the lamp current is set to 0.1 times that of the constant current (0.1 * 3 A = 0.1A), when the value of the constant current regulation into 2A, turn lamp current is 0.1 times that of the constant current (0.1 * 2A = 0.2A). The default shipment has to adjust to the 0.1 times

Indicator light :

constant current cc indicator light red ;
charging indicator light red ;
full-charged indicator light blue

The output ripple: 20M bandwidth (for reference only)
Input 12V output 5V 3A 60mV (MAX)
Working temperature: industrial grade (-40℃ ~ + 85℃) (when temperature is more than 40℃, please reduce power, or enhance heat dissipation)
Full load temperature rise: 45℃
No-load current: 10mA typical (12V to 4.2V)
Load regulation: ± 1%
Voltage regulation: ± 0.5%
Dynamic response speed: 5% 200us
Output short circuit protection: yes, constant current (current setting constant current value)
Connection mode: can lead directly welding on the PCB

Battery charging methods :
1. Determine the float voltage and charging current that you need to charge battery and module's input voltage .
2. Adjustable constant voltage potentiometer, the output voltage is regulated to about 5V .
3. Use multimeter 10A current block measurement output short circuit current, meanwhile adjusting the constant current potentiometer to make output current reaches predetermined current value .
4. The charging turn lamp current default is 0.1 times of charging current (current value ).If you need, adjust turn lamp current potentiometer please (generally do not adjust).
5. Adjustable constant voltage potentiometer to make the output voltage to the floating charge voltage .
6. Connect battery, to try charging
(1, 2, 3, 4, 5 steps is the module input power, output no-load not connected to the battery).


LED constant current driving use methods :
1. Determine you need to drive LED operation current and maximum working voltage
2. Adjustable constant voltage potentiometer, the output voltage is regulated to about 5V.
3. Use multimeter 10A current block measurement output short circuit current, meanwhile adjusting the 4. constant current potentiometer to make output current reaches LED operating current .
5. Adjustable constant voltage potentiometer to make the output voltage to the LED maximum working voltage
6. Connected to the LED, try test machine.
(1, 2, 3, 4 steps is the module input power, output no-load not connected to the LED lamps)

Scope of application:
High power LED constant current drive, lithium battery charging (including ferroelectric), 4V, 6V, 12V, 14V, 24V battery charging, nickel cadmium nickel hydrogen battery (battery pack) charging, solar panels, wind turbines

Package Include:
1 x LM2596S DC DC CC CV Step Down Buck Converter

Packing Condition:
All goods are packed in bags or small boxes, then put into safety export standard carton box, well packed with Bubble.

Shipping Ways:
By express, air shipping or sea shipping methold.

Shipping Freight Saving Methold:

There are many different items in our stock, customers can by the insterested products in the list of one order, we will combine the products in one shipment, to save the shipping cost.

Buy more, save more!

Shipping Time:

1. We will arrange shipemnt in 1 to 5 working days after the payment confirmed.

2. Shipment will by DHL/Fedex/UPS/TNT/EMS/Aramex/SF-express etc. Please confirm the shipping methold when placing new order. 

3. After shipping, we will send the tracking number immediately for tracking the shipment.

Eshinede Technology is a manufacturer and wholesaler located in Shenzhen city, China.
Manufacturing digital voltmeter & ammeter, dc-dc converters, car chargers and other electronics.
There is no minimum order restriction, you can buy products in any order quantity - even 1 piece samples - from a wide selection of the latest released products.
You can pay by TT transfer, Western Union and credit card through Paypal, which offers total buyer protection;
Dropshippers can send single items directly from Eshinede to their customers.
All the products you buy from Eshinede are covered by a 12 month guarantee, and are carefully inspected for quality before packing- which is one additional level of QA over and above what is done in the factory;
You're supported by friendly English speaking staff before and after placing an order, and you can get full product information and support even before purchasing;
Your goods are packed carefully, and the packages are correctly labelled and accompanied by all the paperwork that's needed for smooth clearance through your country's Customs.
Goods are shipped to worldwide by air freight and couriers such as DHL/Fedex/UPS/TNT/EMS.

Eshinede Technology - 8 Years expertise on manufacturing digital voltmeter & ammeter, dc-dc converters, car chargers and other electronics for cars, motorcycles, electric bikes, phones, computers and other electronic equipments.
1. Offer different kinds of electronic products to meet customer's requirements.
2. Provide OEM & ODM service, and protect customer's private design and technic information.
3. Produce high quality products. 
4. Lifetime after-sale service, 100% free warranty.
5. Accept convenient payment methods: customers can make payment by alibaba trade assurance, Paypal, Credit Card, Bank Wire Transfer, Western Union, etc.
6. Speedy shipment: arrange the shipment within 1 to 5 working days.

1. Why choose Eshinede?
High Service Quality: OEM & ODM service; Reply in 24 hours; All of our products are up to the international quality standards and have 8 years experience in overseas export.
High Product Quality: Our well equipment and strict function testing in the productive process guarantee the excellent quality of each product.
Professional Manufacturer: Eshinede corporation is specialized in manufacturing digital voltmeter & ammeter, dc-dc converters, car chargers and some other electronics.

2. Could I order one piece for sample to test the quality?
Yes, We recommend checking the sample before order. You could order the sample before your order.

3. May I have your catalogue and price list for trial order in MOQ quantity?
All our products were shown on alibaba, please have a detailed looking and choose the interested models in our site.

4. If I order big quantity, what's the good price?
Please send the details enquiry to us, such as the item number, quantity for each item, quality request, Logo, payment terms, transport method, discharge place etc. We will make the accurate quotation to you as soon as possible.

5. What are my payment options?
For samples and small acount, it is 100% in advance.
For mass production, it is 30% in advance and 70% balance.
Welcome West Union, TT. bank account and Paypal.

6. How long will it take to ship my order?
As long as there is stock available, Eshinede usually ships items in 1 to 3 working days for samples and within 5 to 7 days for customized order once receiving the confirmation of a new order. The order will not be confirmed until the payment reaches Eshinede’S bank account. If we aretemporarily out of stock, we will do our best to inform you of the estimated lead time.

7. What does your warranty cover?
Eshinede’s product is backed by a 1-year limited warranty against manufacturing defects (material or workmanship). Missing/lost or worn out parts are not covered under our warranty.