Step-down switching regulator circuit based on W497

Probe current voltage pin 420*4450 head diameter 5.0 over current current and voltage pin

A voltage regulator is a device that stabilizes the output voltage. All regulators use the same technique to achieve a stable output voltage of the output voltage through a voltage divider resistor connected to the inverting input of the error amplifier. The non-inverting input of the error amplifier is connected to a reference voltage Vref. The reference voltage is internally provided by the IC. The bandgap reference source is generated. The error amplifier always tries to force the inputs at both ends to be equal. To this end, it provides load current to ensure that the output voltage is stable. As shown in the figure, the circuit diagram of the step-down switching regulator based on W497 is shown.