Unfortunately the sellers typically just state the maximum specs of the switcher IC that is being used in the design without regard to the quality of the overall implementation and rate these assemblies at 3A. You can find variations of these small DC-DC converters for sale in many places. Note: The grounds on input and output side are in common.
For short term use such as to test the module, small alligator clips can be used to make the connections. For light duty use on a solderless breadboard where not much current is being pulled, short M/M jumper wires can work to connect power by soldering one end to the board and using the other end to plug into the breadboard. The pinout is not on 0.1″ centers, so they cannot be plugged directly into a breadboard. With the silkscreen right-side up, the input will be on the left side.Ĭonnections are solder type so wires or header pins will need to be soldered to the board to connect power. These are compact boards with input power applied to one end and output power available on the other end. With a 12V input for instance, the upper output limit will be approximately 10.5V. The upper limit of the adjustment range will depend on the input voltage and is typically about 1.5V less than the input voltage. The lowest output voltage is approximately 1.25V. The pot will require multiple turns in the CCW direction before the output voltage starts to decrease. When first received, the pot is usually railed in the CW direction so the output voltage will be close to the input voltage. Turning the pot CW increases the output voltage while turning it CCW decreases the output voltage. The module has a multi-turn potentiometer for adjustment of the output voltage.
The board has 2 holes which can be used for mounting it permanently if desired using two small M3 screws. The LM2596S converter IC has over current and thermal limiting features built-in. The input voltage must be higher than the output voltage. This DC-DC Step-Down converter is adjustable and capable of outputting a voltage in the range of 1.25 to 35V at a continuous current of up to 1.5A and short-term current of up to 2A with a maximum power output of up to 24W. Output current up to 2A (see chart below)ĭC-DC Step-Down converters (also known as ‘Buck’ converters) convert a higher voltage to a lower voltage while also stepping up the available current.
KEY FEATURES OF LM2596S ADJUSTABLE DC-DC STEP DOWN MODULE:
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