Pin functions are as follows:
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1. VIN: This is the input power pin of the chip, responsible for the external DC power input to the chip.
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2.EN: This is the chip power control pin, which should be connected to VCC if the chip needs to be in working condition.
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3. SW: This is the switch pin of the chip, which is responsible for controlling the load terminal voltage.
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4. GND: The ground of the chip, together with VIN, constitutes the complete circuit of the input power supply.
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5. FB: Feedback control foot is used to control the output voltage regulator of the chip, which needs to be adjusted by the load resistor (R1).
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6. VOUT: chip output port, responsible for transmitting stable DC output voltage to the load.
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It should be noted that when using the 76633 chip, the wiring needs to be carried out in accordance with the established circuit design specifications to ensure the normal operation of the chip and the stability of the circuit. If you are not familiar with the specific use of 76633 or need more information, please refer to the relevant chip circuit design documents or contact the chip manufacturer for technical support.