LM2596 DC-DC adjustable step-down module with voltmeter display with voltage accuracy calibration
Create cost-effective products of similar products, and create LM2596 with digital display module! ! !
The LM2596 module on the market does not have output short-circuit protection. When the output is short-circuited, the module will be destroyed immediately, and the current output capacity is less than 1.8A. This module uses original LM2596, large chip, matte surface, output short circuit protection, high current 3A.
Module highlights:
1. Comfortable price, intelligent and user-friendly design, and cost-effective!
2. On-board voltmeter, the voltmeter can be self-calibrated, there will be no problem with the voltmeter!
Module performance and characteristics:
●With voltmeter display and the voltmeter can be self-calibrated. A more advanced voltage microprocessor is adopted, the error of the voltmeter is ±0.05V, and the range is 0~40V. (To ensure the accuracy of the voltmeter, please ensure that the input voltage is above 4.5V)
●Touch the button to switch between measuring input or output voltage, and there is an indicator light to show which voltage is being measured, and the setting is saved, even if the power is turned off and on again.
●The voltmeter can be turned off, and it can be easily realized by tapping the button on the left when it is not needed.
●With terminal blocks, it is convenient to use without soldering iron, and the connection points of welding wires are reserved.
●The input voltage is 4.0~40V. (The input voltage must be more than 1.5v higher than the output voltage)
●Adjustable output voltage range 1.25V~37V continuously adjustable. (The input voltage must be 1.5V higher than the output voltage)
●The output current is 3A, and it is recommended to use it within 2.0A. The high current needs to strengthen the heat dissipation.
●The output power is 20W, please strengthen the heat dissipation if it exceeds 15W.
●High conversion efficiency, an average of 88% (efficiency is related to input, output voltage, current, and pressure difference)
●With reverse connection protection, reverse connection will not burn
●With overheating protection and short circuit protection function
●Size 6*3.5*12cm (length*width*height)
●Weight: 22g
Application range:
This module can be used in step-down fields where the input voltage is higher than the output voltage, such as batteries, power transformers, DIY adjustable regulated power supplies, 24V car pen-based power supplies, industrial equipment step-down, 12V to 3.3V, 12V to 5V, 24V to 5V, 24V to 12V, 36V to 24V, etc.
Self-calibration method of on-board voltmeter:
1. When the on-board voltmeter displays the output voltage, press and hold the button on the right for 2 seconds and then release it. The voltmeter and the output voltage indicator "OUT" will flash simultaneously, and the output voltage adjustment mode will be entered; for the same reason, display on the voltmeter When inputting voltage, press and hold the button on the right for 2 seconds and then release, the voltmeter and the input voltage indicator "IN" will flash simultaneously, and the input voltage adjustment mode will be entered at this time;
2. Tap the right button to increase the voltage by one unit, and tap the left button to decrease the voltage by one unit; since
the voltage value of a unit is less than 0.1V, you need to press 1-5 times to see the voltmeter Changed by 0.1V, the specific
number of consecutive keystrokes depends on the currently displayed voltage value. The higher the currently displayed voltage, the fewer the number of times to press;
3. After the voltage adjustment is completed, press and hold the right button for 2 seconds and then release it. At this time, you can exit the voltage calibration mode, and all parameter settings will be automatically saved after power-off.
Note: With this adjustment method, you only need to calibrate the voltage value that can be obtained on the entire voltage range once. T
