★Product Name: LM2596 DC-DC Adjustable Buck Module/Buck Converter

★Features:

✭With voltmeter display, the voltmeter error is ±0.1V, and the range is 0~40V. (Note: the input voltage is lower than 4V, the onboard voltmeter does not work and does not display).

✭Tap the button to switch the measurement input or output voltage, and there is an indicator light to show which voltage is being measured, and keep the last setting, even if the power is turned off and then turned on.

✭The voltmeter can be turned off, pressed and held the switch for more than 1 second and less than 4 seconds, and released to turn off

✭ the Input and output voltage measurement error calibration function, long-press the switch for more than 4 seconds, and then enter the voltage measurement error calibration function after letting go. The digital tube flashes to display the voltage reference value (the range is 2.45~2.60). At this time, short press the button to change the value (cycle between 2.45~2.60). When the voltage value displayed by the voltmeter is too high, lower the reference value. When the voltage value displayed by the voltmeter is low, increase the reference value. After adjusting to the desired reference value, press and hold the button for more than 2 seconds. After letting go, the set value will be saved and the voltage will return to the normal display voltage. The set correction value will take effect immediately and will not be lost after power failure.

✭With terminal block, it is easy to use without a soldering iron, and the soldering wire connection points are reservedInput voltage 4.0~40V (The input voltage must be more than 1v higher than the output voltage.)

✭The adjustable output voltage range is 1.25V～37V continuously adjustable (the input voltage must be more than 1V higher than the voltage to be output).

✭The output current can be as high as 3A, and the normal stable working current is 2A

✭Using 150KHz internal oscillation frequency, it belongs to the second generation switching voltage regulator, with low power consumption and high efficiency.