M
Dr ot
ive or
rs
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.
Data Sheet
28210.05B
ABSOLUTE MAXIMUM RATINGS
AT T
A
= 25°C
Load (Motor) Supply Voltage, V
M .........
46 V
Main Power Supply Voltage, V
BB ..........
46 V
Logic Supply Voltage, V
DD ...........................
7 V
Output Current, I
OUT
SLA7075M .................................1.0
A
SLA7076M .................................1.5
A
SLA7077M .................................2.0
A
SLA7078M .................................3.0
A
Logic Input Voltage, V
IN
..............................
–0.3 to V
DD
+0.3 V
REF Input Voltage, V
REF
............................................
–0.3 to V
DD
+0.3 V
Sense Voltage, V
SInt
t
w
< 1
μs
is not considered..........
±2 V
Power Dissipation, P
D
Without heat sink ......................
4.7 W
Junction Temperature, T
J.......................
150°C
Ambient Temperature, T
A
.......
–20 to 85°C
Storage Temperature, T
stg
...
–30 to 150°C
FEATURES AND BENEFITS
Features
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
Microstepping at full-, half-, quarter-, eighth-, and sixteenth-steps
Built-in sense resistor, R
SInt
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
Sanken Power Devices
from Allegro MicroSystems
ALLEGRO [ ALLEGRO MICROSYSTEMS ]
