Features and Benefits

• Power supply voltages, V_BB: 46 V(max.), 10 to 44 V normal operating range
• Logic supply voltages, V_DD: 3.0 to 5.5 V
• Maximum output currents: 1 A, 1.5 A, 2 A, 3 A
• Built-in sequencer
• Simplified clock-in stepping control
• Both full/half-stepping (SLA7070M to SLA7073M) and microstepping (SLA7075M to SLA7078M)
• Built-in sense resistor, RSInt
• All variants are pin-compatible for enhanced design flexibility
• ZIP type 23-pin molded package (SLA package)
• Self-excitation PWM current control with fixed off-time
• Built-in synchronous rectifying circuit reduces losses at PWM off
• Synchronous PWM chopping function prevents motor noise in Hold mode
• Sleep mode for reducing the IC input current in stand-by state
• Built-in protection circuitry against motor coil opens/shorts option available

Description

The SLA7070M series motor driver ICs feature unipolar drivers. The clock-in type input interface allows simplified control logic, and options for built-in sense current detection and load circuit short or open protection (patent pending) provide lower loss, and lower thermal resistance. All products in the SLA7070M series are pin-compatibile, supporting rapid design of application variants.

The built-in excitation distribution circuit (sequencer) allows motor control using only the CLOCK signal for simple operations (rotate/stop), with motor speed control by frequency input into CLOCK pin. This eliminates logic signal lines required for conventional phase-input methods, and reduces demand on heavily-used CPUs.

Contact Allegro® for application information and additional information on device performance and