Pin definition:

IN+: Input positive pole

IN -: Input negative pole

0UT+: output positive pole

OUT -: Output negative pole

Instructions for use:

1. Connect the power supply (3~40V), the power indicator light is on, and the module is working normally.

2. Adjust the blue Potentiometer knob (generally rotate clockwise to increase voltage and counterclockwise to decrease voltage) and use a multimeter to detect that the output voltage reaches the required voltage.

Attention: This module is a step-down module. The input voltage must be more than 1.5V higher than the output voltage, and cannot be boosted! It is recommended to use a current of less than 2.5A for long-term work, and add a heat sink (output of over 10W).

Product name: 5A high-power 75W regulated power module

This module is different from the LM2596 and XL4005 voltage reduction modules on the market, which use chips with designed power of 15W and 50W respectively. This voltage reduction module in our store uses an upgraded chip, which is superior to similar products in terms of input and output voltage range, output power, and efficiency. The power can reach 75W, which has a high cost-effectiveness.

Product features:

1.5A high-power, high-efficiency, step-down, and low ripple.

2. With power indicator light.

3. On board Voltmeter and Voltmeter can be self calibrated, and there will be no problem of inaccurate Voltmeter.

Product Description:

1. With power indicator light

2. With Voltmeter display and Voltmeter self calibration. The voltage microprocessor is adopted, the error of Voltmeter is ± 0.05V, and the range is 0~40V. (Note: to ensure the accuracy of the Voltmeter, please ensure that the input voltage is above 4.5V)

3. Gently push the button to switch between measuring input or output voltage, and an indicator light displays which voltage is being measured, and saves the settings, even if it is turned off and on again.

4. The Voltmeter can be closed, which can be easily realized by tapping the left button when it is not needed.

5. Equipped with wiring terminals, it can be easily used without soldering iron, and the solder wire connection points are retained.

6. Input voltage 4.0-38V. (The input voltage must be more than 1.5V higher than the output voltage)

7. Adjustable output voltage range: 1.25V~36V, continuously adjustable. (The input voltage must be 1.5V higher than the output voltage)

8. The output current can reach 5A, and it is recommended to use it within 4.5A.

9. The output power can reach 75W.

10. High conversion efficiency, up to 96% (efficiency is related to input, output voltage, current, and voltage difference)

11. Load adjustment rate S (I) ≤ 0.8%, voltage adjustment rate S (u) ≤ 0.8%

12. Equipped with overheating protection function

13. Size 66 * 39 (length × Wide)

As shown in the following figure:

LM2596 Constant Voltage & Constant Current

This module is an adjustable step-down module that can change the output voltage by adjusting the blue adjustable resistor on top of the module. The input output voltage difference is 2V, and the minimum output voltage is 1.23V.

The N - (input negative), IN+(input positive), OUT - (output negative), OUT+(output positive) marked on the module must be connected correctly, otherwise it may cause module damage.

Battery charging usage method:

1. Determine the float charging voltage and charging current of the battery you need to charge, as well as the input voltage of the module.

2. Adjust the constant voltage Potentiometer to adjust the output voltage to about 5V.

3. Use the 10A current gear of the multimeter to measure the output short-circuit current, and adjust the constant current Potentiometer to make the output current reach the predetermined charging current value.

4. By default, the charging turn light current is 0.1 times of the charging current (constant current value). If you need to adjust it, please adjust the turn light current Potentiometer (generally not adjusted).

5. Adjust the constant voltage Potentiometer to make the output voltage reach the floating charge voltage.

6. Connect the battery and try charging. (Steps 1, 2, 3, 4, and 5 are to connect the module input to the power supply, and the output is unloaded without connecting to the battery.)

Usage of LED constant current drive:

1. Determine the working current and maximum working voltage that you need to drive the LED.

2. Adjust the constant voltage Potentiometer to adjust the output voltage to about 5V.

3. Use the 10A current gear of the multimeter to measure the output short-circuit current, and adjust the constant current Potentiometer to make the output current reach the predetermined LED working current.

4. Adjust the constant voltage Potentiometer to make the output voltage reach the maximum operating voltage of LED.

5. Connect the LED and test the machine. (Steps 1, 2, 3, and 4 are to connect the module input to the power supply, and not to connect the LED light when the output is empty.)

Product features:

The module uses domestically produced high-quality LM2596 chip, which has high efficiency (up to 92%) and low heat generation, making it easy to reach a current of over 3A. At the same time, it is combined with the original TI operational amplifier to control the output current, making the overall output very stable.

This module uses original Sanyo filter capacitors with low ESR, which can reduce the ripple voltage to 50mV.

This module uses machine mounting and reflow welding. At the same time, each module has undergone two hours of aging test before delivery to ensure high reliability.