DC-DC Buck Step Down Voltage Regulator Module with Voltmeter 4.0-40V to 1.25V-37V LM2596

DC-DC Buck Step Down Voltage Regulator Module with Voltmeter 4.0-40V to 1.25V-37V LM2596  

Highlights:
- LM2596 module with digital display
- Cost-effective and humanized design
- On-board voltmeter can be self-calibrated to avoid inaccurate voltmeter readings

Features:
- With voltmeter display and voltmeter can be self-calibrated. Advanced voltage microprocessor is used, 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).
- Press button to switch between measuring input or output voltage, and indicators light shows which voltage is being measured, and settings can be saved, even if the power is turned off and then on.
- The voltmeter can be turned off, and it can be easily realized by touching the left button when it is not needed.
- With wiring terminal, it is convenient to use without soldering iron, and the welding wire connection point is reserved.
- Input voltage is 4.0 ~ 40V. (The input voltage must be more than 1.5V higher than the output voltage).
- Output voltage is continuously adjustable from 1.25V to 37V. (The input voltage must be 1.5V higher than the output voltage).
- Output current is 3A. It is recommended to use it within 2.0A. Large current needs to strengthen heat dissipation.
- Output power is 20W, please strengthen heat dissipation if it exceeds 15W.
- High conversion efficiency, averaged at 88% (efficiency is related to input, output voltage, current, and voltage difference).
- With reverse connection protection, it protects the module from being burnt.
- Weight: 22g

Applications:
This module can be applied in step-down field where the input voltage is higher than the output voltage, such as power transformers, DIY adjustable regulated power supplies, 24V car laptop 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 right button for 2 seconds and then release it. The voltmeter and the output voltage indicator "OUT" flash synchronously, and enter the output voltage adjustment mode.

2.Press the right button to increase voltage by one unit. Press the left button to decrease voltage by one unit. Because the voltage value of one unit is less than 0.1V, you need to press it 1-5 times continuously to see the voltmeter changes by 0.1V. The specific number of consecutive key presses depends on currently displayed voltage value. The higher the currently displayed voltage, the fewer times it is pressed.

3.After voltage adjustment is completed, press and hold the right button for 2 seconds and then release it. At this time, the voltage calibration mode can be exited. All parameter settings are automatically saved after power-off.

Attention: You only need to calibrate once for this adjustment method, and you can get accurate voltage value across the entire voltage range. This function is designed to meet your higher accuracy requirements, please use it with ease.

Package included:
- 1 x DC to DC Step Down Module