The answer is as follows: 4275 power chip pin functions are as follows:
1. VIN: Input power voltage
2. GND: Ground
3. VCC: Output power voltage
4. EN: Enables the control pin
5. PG: Power failure detection pin
6. FB1: Feedback control pin
7. FB2: Feedback control pin
8. SS: synchronous control pin
9. COMP: Compensation control pin
10. NC: The pin is not connected
Among them, VIN, GND and VCC are the basic pins of the power chip, EN is used to control the switch of the chip, PG is used to detect power failure, FB1 and FB2 are feedback control pins to control the stability of the output voltage, SS is used for synchronization control, and COMP is used for compensation control. NC is an unused pin that is usually not connected.
Pin 1: Input the positive terminal.
Pin 2: Input negative terminal.
Pin 3: Output power positive.
Pin 4: Output negative terminal.
Pin 5: Control port, used to control the on-off state of the chip.
Pin 6: Reference voltage port, used to provide the internal reference voltage of the chip.
Pin 7: Protection port, used to protect the chip from overvoltage and overcurrent.
Pin 8: Ground port, used to connect the ground wire of the chip.
Hello, 4275 is an audio power amplifier power chip, its pin functions are as follows:
1. VCC: positive power input
2. GND: negative power input
3. SD: Turn off the control input, the high level is valid
4. IN: indicates the input signal positive input
5. IN- : input signal negative input
6. SHDN: Turn off the control output for cascading multiple power amplifier chips
7. OUT1: indicates output signal 1
8. OUT2: Output signal 2
Among them, VCC and GND are power input, SD and SHDN are off control input and output, which are used to control the switching state of the chip. IN and IN- are the positive and negative poles of the input signal, and OUT1 and OUT2 are the positive and negative poles of the output signal.