โมดูลลดแรงดันพร้อมจอ LM2596 2.5-36V to 1.25-35V Step-down buck DC-DC adjustable voltage regulated power supply module

Product parameters :

Product size: 66 mm *  36 mm *  14 mm (Length x Width x Height)

Product weight: 23 g (including packaging)

Color : Blue

Packaging: Single module anti-static bag packaging

Material : FR4+electronic components

Applications:

This module can be used in the field of step-down where the input voltage is higher than the output voltage, such as batteries, power transformers, DIY adjustable voltage regulators, 24V vehicle-mounted notebook power supplies, industrial

With voltmeter display , voltmeter error ±0.1V, range 4 ~ 35 V. (Note: if the input voltage is lower than 4V, the onboard voltmeter will not work and will not display)

●Touch the button to switch between input and output voltage measurement , and the indicator light will showwhichvoltageis being measured. When the device is turned on for the first time, the digital tube displays the input voltage by default, and the input indicator light IN is on; touch the button, and the digital tube displays the output voltage, and the output indicator light OUT is on. The last setting will be kept even if the device is turned off and then turned on again .

● The voltmeter can be turned off by pressing the switch for more than 1 second and less than 4 seconds, and then releasing it to turn it off . After the voltmeter is turned off, just press the switch briefly to turn it on.

● Input and output voltage measurement error calibration function , press and hold the switch for more than 4 seconds, and then release it to enter the voltage measurement error calibration function. At this time, the IN light is on (calibration input terminal), and the digital tube flashes to display the positive value (the factory parameter is 0.0). At this time, short press the button to change this value (the value range is -0.5~0.5, the unit is V). Positive numbers indicate upward calibration, and negative numbers indicate downward calibration. After adjusting the input terminal calibration value, press and hold the button for more than 2 seconds, and then release it to enter the output terminal error calibration. At this time, the OUT light is on (calibration output terminal) and the calibration value of the output terminal is displayed. The adjustment method is the same as that of the input terminal. After adjusting the output terminal calibration value, press and hold the button for more than 2 seconds, and then release it to save the set value and return to the normal display voltage. The set correction value takes effect immediately and is not lost when the power is off. (With this function, your higher accuracy requirements can be met)

●With terminal block, it is easy to use even without a soldering iron, and the soldering wire connection point is reserved

(The input voltage must be at least 1V higher than the output voltage)

●The maximum output current can be up to 3A , the recommended working current is around 2A, add a heat sink if the current exceeds 2A

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

●The input end is protected by a diode, and reverse connection will not burn the module

●With overheat protection and short circuit protection (please strengthen heat dissipation if it exceeds 15W)

Some customers reported that the module output voltage cannot be adjusted and is always equal to the input voltage. If you encounter this problem, please rotate the potentiometer counterclockwise for more than 10 turns, and then use the module to adjust the voltage normally. Because the default output voltage of the step-down module is around 20V when it leaves the factory.