SLA7075MPRT

Application Information SLA7070MPRT Series Unipolar 2-Phase Stepper Motor Driver ICs General Description This document describes the SLA7070MPRT series, which are unipolar 2-phase stepping motor driver ICs. The SLA7070MPRT series employs a clock input method as a control signal input method, enabling full control of the device operation using only a few signal lines, instead of the conventional phase input method that requires about 10 signal lines. This allows simplification of the circuit design and a reduced workload on the control microprocessor. In addition, the SLA7070MPRT series is improved in its reliability by preventing the IC from damage due to abnormal conditions. For example, it has a flag output terminal to signal that a protection circuit has operated. The series also has a built-in protection circuitry against motor coil opens/shorts and thermal shutdown protection as well. All the SLA7070MPRT series ICs are compatible in their pin layouts and interface specifications, allowing customers the flexibility of choosing the IC that is optimal for the target equipment characteristics. Features and Benefits Power supply voltages, VBB : 46 V (max.), 10 to 44 V normal operating range Logic supply voltages, VDD : 3.0 to 5.5 V Maximum output currents: 1 A, 1.5 A, 2 A, 3 A Built-in sequencer Full-, half-, and microstepping available (microstepping options are capable of full-, half-, quarter-, eighth-, and sixteenth-stepping Figure 1. SLA7070MPRT packages are ...