1. Generally 3.3V or 5V. 2. Because the a1527 power chip is an integrated circuit, its pin voltage needs to meet the needs of its normal operation.
Under normal circumstances, its power supply pin needs to be connected to a 3.3V or 5V power supply to ensure the normal operation of the chip.
3. If you need more detailed information, you can consult the data manual of the a1527 power chip or consult the relevant professional.
Pin Name Description Measured voltage (V)1 Drain internal FET drain 313V2 CND chip ground terminal 0V3 V CC chip power supply terminal 12.5 V4 Vfb feedback input terminal (connected to voltage regulator circuit) 0.3V5 NC empty pin 6 Vstr power supply starting terminal (connected to internal high voltage Current source) 310V