Model/Name: LM2596S DC-DC Buck Module

Input Voltage: 3.2V~40V

Output voltage: 1.25V~35V

Output current: 3A (max)

Conversion efficiency: 92% (max)

Output Ripple: <30mV

Switching frequency: 65KHz

Operating temperature: -45℃~ +85℃

Dimension size: 43mm * 21mm * 14mm (L*W*H)

IN+ Input Positive IN- Input Negative!

OUT+ Output Positive OUT-Output Negative

Input voltage range: DC 3.2V to 40V (The input voltage must be at least 1.5V higher than the voltage to be output. Can not be boosted)

Output voltage range: DC 1.25V to 35V voltage continuously adjustable, high efficiency (maximum 92 hundred) maximum output current of 3A.

Actual measurement of 12V input, 5V output current 1A when the load regulation rate is less than 1 hundred

Note: This is a buck module, the input voltage must be higher than the output voltage.

Output current greater than 2.5A (or output power greater than 10W) long working hours please add heat sink.

Usage Tip

Note: The newly unpacked buck converter module may require initial adjustment

To ensure your buck converter module operates correctly, we recommend the following steps during the first use:

1. Initial Potentiometer Adjustment: After unpacking, please rotate the potentiometer about 10-15 turns. This helps stabilize the potentiometer and ensures precise output voltage adjustment.

2. Monitor Output Voltage Changes: While rotating the potentiometer, use a multimeter to measure the output voltage. You will notice the output voltage gradually becoming more stable and accurate.

After this initial adjustment, your buck converter module will work stably and provide the desired output voltage.

Factory default 18V or so, counterclockwise turn a turn potentiometer about 1V drop