NC1FB_B02FB_B13AGND4VANA5EN6NC7VIN8nINT9CLKIN10VIN_B111VIN_B112SW_B113SW_B114PGND_B115PGND_B116SCL17SDA18SGND19PGND_B020PGND_B021SW_B022SW_B023VIN_B024VIN_B025GPO26PGOOD27VIN28EP29