AP8100

AP8100 Bipolar Stepping Motor Driver IC Description The AP8100 is 2 phase stepping motor driver IC. It consists of TTL compatible input circuits, dual bridge driver outputs with flyback diodes, changing circuit of motor coil drive voltage (Power saving circuit) and stand-by circuit Features  One Chip 2 Phase Stepping Motor Driver including two bridge drivers  Power Saving and Stand-by Operation  Short-Through Current Restriction Circuit  TTL Compatible Inputs  Output Current up to 400mA(Peak)  Over Current Shutdown Circuit  Thermal Shutdown Circuit  Under Voltage Lockout Circuit  Pull-down Resistance for Input Application  FDD, Refrigerator Actuator DIP-16 www.apsemi.com REV. 01 1 AP8100 Block Diagram VS1A 16 OCL OCL VS2A 1 INA PS INB 37 6 VS2B 8 OCL OCL OCL OCL OCL OCL 9 VS1B VOA+ 15 VOA- 14 GND 13 Output Logic & Driver UVLO 4 GND Note : Pin 4, 5, 12 and 13 are internally connected. VCC VS1A VS1B VS2A VS2B Output Logic & Driver TSD BIAS 2 VCC 5 GND Pin Description Pin No 1 2 Symbol VS2A VCC 3 INA 6 7 8 9 10 11 14 15 16 4, 5, 12, 13 INB PS VS2B VS1B VOB+ VOBVOAVOA+ VS1A GND Functional Description Low-voltage power supply terminal Power voltage supply terminal for control A-ch forward rotation / reverse rotation signal input terminal, Truth Table 1 B-ch forward rotation / reverse rotation signal input terminal, Truth Table 1 Power saving signal input terminal Standby signal input terminal, Truth Table 2 High-voltage power supply te...