5 4 3 2 10 4 3 9 11 5 2 8 12 6 1 7 1 D D C 1 RUN SENSE 10 2 ITH VIN 9 3 NFB INTVCC 8 4 FREQ 5 MODE/SYNC C GATE 7 GND 6 B B A A 5 4 3 2 1