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SLA7070M Dataheets PDF



Part Number SLA7070M
Manufacturers Allegro
Logo Allegro
Description Motor Driver
Datasheet SLA7070M DatasheetSLA7070M Datasheet (PDF)

DriveMrostor Data Sheet 28210.04A SLA7070M, SLA7071M, SLA7072M, and SLA7073M Motor Driver IC Family The SLA7070M, SLA7071M, SLA7072M, and SLA7073M 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.

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DriveMrostor Data Sheet 28210.04A SLA7070M, SLA7071M, SLA7072M, and SLA7073M Motor Driver IC Family The SLA7070M, SLA7071M, SLA7072M, and SLA7073M 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 logic. 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 SLA7070M .................................1.0 A SLA7071M .................................1.5 A SLA7072M .................................2.0 A SLA7073M .................................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 FEATURES AND BENEFITS 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 „ Both full/half-stepping „ 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 Sanken Power Devices from Allegro MicroSystems DriveMrostor SLA7070M, SLA7071M, SLA7072M, and SLA7073M Motor Driver ICs PART NUMBERS AND OPTIONS The following are the product variants and optional features available for these variants of the SLA7070M series. Not all combinations of standard models and product options are available in high-volume production quantities. For information on product availability, and assistance with determining the IC features that are the best fit for your application, please contact our sales office or representative. NOTE The following abbreviations are used throughout this document to refer to product variants: PR – Product with both Protection Circuitry and built-in RSInt options R – Product with the built-in RSInt option Part Number SLA7070MR SLA7070MPR SLA7071MR SLA7071MPR SLA7072MR SLA7072MPR SLA7073MR SLA7073MPR Protection RSInt Protection Circuitry and RSInt RSInt Protection Circuitry and RSInt RSInt Protection Circuitry and RSInt RSInt Protection Circuitry and RSInt Output Current, IOUT (A) 1 Sequencer Blanking Time (μs) Clock Edge 1.5 Full/half Step 3.2 Positive 2 3 115 Northeast Cutoff, Box 15036 2 Worcester, Massachusetts 01615-0036 Copyright © 2005 Allegro MicroSystems, Inc. DriveMrostor SLA7070M, SLA7071M, SLA7072M, and SLA7073M Motor Driver ICs FUNCTIONAL BLOCK DIAGRAM AND PIN ASSIGNMENTS OutB OutB OutB OutB VBB Reset Clock F/R M3 M2 M1 N.C. Flag Ref/Sleep1 VDD OutA OutA OutA OutA 1234 14 13 18 6 7 8 9 16 10 15 11 20 21 22 23 MIC PreDriver Protect Sequencer & Sleep Circuit Reg. PreDriver Protect SenseA 5 RSInt DAC + Comp - OSC PWM Control Synchro Control DAC PWM Control + Comp - OSC RSInt 19 SenseB 17 12 Sync Gnd For R products, protection circuits not built-in. FLAG pin is not connected internally. Pin No. Symbol Functions Pin No. 1 OutA Output of phase A 2 13 14 3 OutA Output of phase A¯ 4 15 16 5 SenseA Phase A current sensing 17 6 NC No internal connection 18 7 M1 19 8 M2 Commutation and Sleep2 setting 20 9 M3 21 10 Clock Step clock input 22 11 VBB Main power supply (for motor) 12 GND Ground 23 *Flag pin active on PR products only; not internally connected for R products. Symbol Ref / Sleep1 VDD Reset F/R Sync Flag* SenseB OutB OutB Functions Input for control current and Sleep 1 setting Power supply to logic Reset for internal logic Forw.


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