The function of the foot IC voltage stable M2576-5.0Leg 1: voltage on pinsLeg 2: foot of the output voltage.Leg 3: legs of ground connection.Leg 4: foot of the feedback voltage.Leg 5: control ON/OFF sourceBut is the structural sources of the switching IC but circuit of voltage used LM2576 is also very simple, composed of at least the components. The picture below is for example a 12v output voltage stabilization circuit did and test practical, stable running circuit.
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