BMC21TRACK/SS22VFB23ITH24VCCD5RUN26VIN27VIN18VIN1D9SW2A10SW2B11SW1D12SW113PGND1D14PGND115PGND216RUN117PHASE18ITH119VFB120TRACK/SS121BMC122PGOOD123FREQ24GNDA25VCCA26SYNC/MODE27PGOOD228EP29