KA3100D

www.fairchildsemi.com KA3100D Stepping Motor Driver Features Built-in vertical PNP power transistors Wide supply voltage range(VCC = 2.5V ~ 7.0V) Low saturation voltage (0.4V@ 0.4A) Built-in chip enable function Built-in shoot-through current protector Built-in thermal shutdown(TSD) function Built-in current-mode control circuit (IPEAK: 1A) Description The KA3100D is a monolithic integrated circuit designed for a two-phase stepping motor driver of a FDD system. 16-SOP-225 Typical Application Floppy disk drive Camera stepping motor General stepping motor Ordering Information Device KA3100D KA3100DTF Package 16-SOP-225 16-SOP-225 Operating Temp. −20 ~ +75°C −20 ~ +75°C Rev. 1.0.2 May. 2000. ©2000 Fairchild Semiconductor International 1 KA3100D Pin Assignments PGND OUT3 OUT4 CE2 VS2 IN2 NC 16 15 14 13 12 11 10 9 KA3100D 1 VCC 2 CE1 3 OUT1 4 VS1 5 OUT2 6 IN1 7 SGND 8 PGND Pin Definitions Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pin Name VCC CE1 OUT1 VS1 OUT2 IN1 SGND PGND NC NC IN2 OUT4 VS2 OUT3 CE2 PGND I/O I O O I I O O I Chip enable 1 Output 1 Power supply 1 Output 2 Input 1 Signal ground Power ground No connection No connection Input 2 Output 4 Power supply 2 Output 3 Chip enable 2 Power ground Pin Function Description Logic part supply voltage 2 NC KA3100D Internal Block Diagram 4 VS1 VCC 1 3 OUT1 IN1 6 Control Part1 CE1 2 5 OUT2 SGND 7 TSD & BIAS 8 PGND 13 VS2 14 IN2 11 Control Part2 OUT3 CE2...