(China (Mainland))
Product Summary
The SLA7078MPR motor driver IC features 2-phase stepper unipolar drivers. The clock-in type input interface allows simplified control logic, and options for built-in sense current detectionand load circuit short or open protection (patent pending) provide lower loss,and lower thermal resistance. The SLA7078MPR is pin-compatibile, supporting rapid design of application variants.The built-in excitation distribution circuit (sequencer) allows motor controlusing only the CLOCK signal for simple operations (rotate/stop), with motorspeed control by frequency input into CLOCK pin. This eliminates logic signallines required for conventional phase-input methods, and reduces demand onheavily-used CPUs.
Parametrics
SLA7078MPR absolute maximum ratings: (1)Load (Motor) Supply Voltage: 46 V; (2)Main Power Supply Voltage: 46 V; (3)Logic Supply Voltage: 7 V; (4)Logic Input Voltage: -0.3 to VDD+0.3 V; (5)REF Input Voltage: -0.3 to VDD+0.3V; (6)Sense Voltage: ±2 V; (7)Power Dissipation: 4.7 W; (8)Junction Temperature: 150℃; (9)Ambient Temperature:–20 to 85℃; (10)Storage Temperature:–30 to 150℃.
Features
SLA7078MPR features: (1)Power supply voltages; (2)Maximum output currents: 1 A, 1.5 A, 2 A, 3 A; (3)Built-in sequencer; (4)Simplified clock-in stepping control; (5)Microstepping at full-, half-, quarter-, eighth-, and sixteenth-steps; (6)Built-in sense resistor, RSInt; (7)All variants are pin-compatible for enhanced design flexibility; (8)ZIP type 23-pin molded package (SLA package); (9)Self-excitation PWM current control with fixed off-time; off-time adjusted automatically by step reference current ratio (3 levels); (10)Built-in synchronous rectifying circuit reduces losses at PWM off; (11)Synchronous PWM chopping function prevents motor noise in Hold mode; (12)Sleep mode for reducing the IC input current in stand-by state; (13)Built-in protection circuitry against motor coil opens/shorts option available.
Diagrams
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