A6151 Power chip is a high efficiency buck type DC-DC converter, mainly used for power management of electronic devices. The chip has a total of 8 pins, of which VIN is the input voltage pin, VOUT is the output voltage pin, and GND is the ground pin. FB is the feedback pin, EN is the enable pin, SW is the switch pin, PGOOD is the power status indicator pin, and SS is the soft start stop pin. Among them, the FB pin is used to control the stability of the output voltage, the EN pin is used to control the switching state of the chip, the PGOOD pin is used to detect the state of the output voltage, and the SS pin is used to realize the soft start-stop function.