5 4 3 2 1 D D 1 GND GND 16 2 NC VSW 15 3 VIN VSW 14 4 VIN SYNC 13 5 BOOST SHDN 12 6 FB VC 11 7 NC BIAS 10 8 GND C C GND 9 B B A A 5 4 3 2 1