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SLA7077MR Datasheet(PDF) 1 Page - Allegro MicroSystems |
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SLA7077MR Datasheet(HTML) 1 Page - Allegro MicroSystems |
1 / 13 page Sanken Power Devices from Allegro MicroSystems SLA7075M, SLA7076M, SLA7077M, and SLA7078M Motor Driver IC Family The SLA7075M, SLA7076M, SLA7077M, and SLA7078M motor driver ICs feature 2-phase stepper 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 logic. Features 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 Simplified clock-in stepping control Microstepping at full-, half-, quarter-, eighth-, and sixteenth-steps 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; off-time adjusted automatically by step reference current ratio (3 levels) 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 FEATURES AND BENEFITS ABSOLUTE MAXIMUM RATINGS AT TA = 25°C Load (Motor) Supply Voltage, VM .........46 V Main Power Supply Voltage, VBB..........46 V Logic Supply Voltage, VDD ...........................7 V Output Current, IOUT SLA7075M .................................1.0 A SLA7076M .................................1.5 A SLA7077M .................................2.0 A SLA7078M .................................3.0 A Logic Input Voltage, VIN .............................. –0.3 to VDD+0.3 V REF Input Voltage, VREF ............................................–0.3 to VDD+0.3 V Sense Voltage, VSInt tw < 1 μs is not considered.......... ±2 V Power Dissipation, PD Without heat sink ...................... 4.7 W Junction Temperature, TJ.......................150°C Ambient Temperature, TA.......–20 to 85°C Storage Temperature, Tstg ...–30 to 150°C |
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