LM2596 3A high efficiency DC-DC voltage converter with LED display and adjustable output 4-40V to 1.5-35V

Highlights with display module: 1. Convenient string, smart and user-friendly design, with high cost-effectiveness! 2. Built-in voltmeter, the voltmeter can be self-calibrated, and there will never be a problem of inaccurate voltmeter! Module performance and characteristics:
Equipped with voltmeter display and self-calibration capability. Using more advanced voltage microprocessors, the voltmeter has an error of ± 0.05V and a range of 0-40V. To ensure the accuracy of the voltmeter, please make sure the input voltage is above 4.5V. Press the button to switch between input or output voltage measurement, and there is an indicator light that shows which voltage is being measured and allows you to save the settings, even if the device is turned off and on again.
The voltmeter can be turned off, and when not needed, just press the left button to easily achieve it. Equipped with wiring terminals, it can be easily used without a soldering iron, and saves solder wire connection points. Input voltage of 4.0~40V. (The input voltage must be at least 1.5V higher than the output voltage)
The adjustable output voltage range is continuously adjustable from 1.25V to 37V. (Input voltage must be 1.5V higher than the output voltage) Output current 3A, recommended to use within 2.0A, high current requires enhanced heat dissipation Output power 20W, please strengthen heat dissipation if it exceeds 15W High conversion efficiency, an average of 88% (efficiency is related to input and output voltage, current and voltage difference)
● With reverse connection protection, reverse connection does not cause damage● Equipped with overheat protection and short circuit protection functions Size 6.1 * 3.4 * 12cm (length * width * height) Weight: 22g Scope of application:
This module can be applied in the field of voltage reduction where the input voltage is higher than the output voltage, such as batteries, electrical transformers, DIY adjustable regulators, 24V car pen and uniform power supplies, industrial equipment voltage reduction, 12V to 3.3V, 12V to 5V, 24V to 5V, 24V to 12V, 36V to 24V, etc.
Built-in voltmeter self-calibration method:
1. When the built-in voltmeter displays the output voltage, press and hold the button on the right side for 2 seconds before releasing it. The voltmeter and the output voltage indicator light “OUT” will flash synchronously, thus entering the output voltage adjustment mode; Similarly, when the voltmeter displays the input voltage, press and hold the button on the right side for 2 seconds and then release it. The voltmeter and the input voltage indicator light “IN” will flash synchronously
Entering the input voltage adjustment mode;
2. Press the right button to increase the voltage by one unit, press the left button to decrease the voltage by one unit; Since the voltage v of a unit is less than 0.1V, you need to press it continuously 1-5 times to see a change of 0.1V on the voltmeter. The specific number of consecutive presses depends on the current voltage displayed v. The higher the current voltage displayed, the fewer presses are needed;
After the voltage adjustment is completed, press and hold the button on the right side for 2 seconds and release it to exit the voltage calibration mode. All parameter settings will be automatically turned off and saved. Note: In this adjustment method, you only need to calibrate to obtain accurate voltage over the entire voltage range. This function is designed to meet your high accuracy requirements, so please use it freely.
Product Guide Without Display ModuleWiring Port:IN+Input Positive IN – Input Negative!OUT+Output Positive Terminal OUT – Output Negative TerminalLM2596S DC-DC BUCK 3A Adjustable Step-Down Module with Voltage Stabilization Above LM2576Industrial-grade add-ons are provided free of chargeLow ripple, high current, high efficiency 90%Comprehensively improve the Performance! Dense holes, strong heat dissipation ability!
Add high-quality X7R high-frequency bypass capacitors at the input and output ends respectively, with extremely strong electromagnetic compatibility performance!Input voltage range: DC 3.2V to 46V. It is recommended to use within 40V! (The input voltage must be at least 1.5V higher than the output voltage. Do not amplify)
Output voltage range: DC 1.25V to 35V, continuously adjustable voltage, high efficiency (maximum 92%), maximum output current of 3AThe load matching rate is less than 1% when tested with 12V input and 5V output current of 1ANote: This is a voltage reduction module, and the input voltage must be higher than the output voltage
Output below 2A can work for a long time without adding a heat sink. If the output current is greater than 2.5A (or the output power is greater than 10W), please Add a heat sink for long-term operation
Input voltage: 3.2V~46V (recommended to use up to 40V), Output:Output voltage: 1.25V~35V, Output:Output current: 3A (maximum), Output:Conversion efficiency: 92% (highest)Output ripple: < 30mV, Output:Switching frequency: 65KHz, Output:Working temperature: -45℃ to +85℃Size: 43mm * 21mm * 14mm
Voltage regulationConnect the power supply (3-40V), adjust the blue potentiometer knob (usually clockwise to increase the voltage, counterclockwise to decrease the voltage), and use a multimeter to monitor the output voltage until it reaches the required voltage
Wiring method1. Welding, directly solder the power cable to the input (output) port;2. Pins can be inserted into the solder pins through leads or used on through-hole boards; or, after adding pins, they can be soldered directly on the printed circuit board (PCB)Application Examples
1. Automotive voltage regulator power supply, just connect the input terminal of this module to the car ignition for power, adjust the potentiometer, and the output voltage can be freely adjusted between 1.25-30V, providing power to many devices such as charging your phone, MP3, MP4, PSP, etc. It is very simple and convenient
2. Power electronics devices. When the device requires a power supply of 3-35V and the corresponding power supply is available, this module can easily adjust the voltage to the required voltage, and solve the problem3. System working voltage test. When working on projects, this module can be used to debug the working voltage ranges of various voltage test systems, which is very easy and convenient