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SLA7072M Datasheet Preview

SLA7072M Datasheet

Motor Driver IC

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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, support-
ing 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




Allegro

SLA7072M Datasheet Preview

SLA7072M Datasheet

Motor Driver IC

No Preview Available !

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 op-
tions are available in high-volume production quantities. For
information on product availability, and assistance with deter-
mining 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.


Part Number SLA7072M
Description Motor Driver IC
Maker Allegro
Total Page 12 Pages
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