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Allegro Micro Systems
Allegro Micro Systems

SLA7080M Datasheet Preview

SLA7080M Datasheet

Unipolar 2-Phase Stepping Motor Driver ICs

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SLA7080M Series
Unipolar 2-Phase Stepping Motor Driver ICs
Features and Benefits
Power supply voltage, VBB, 46 V maximum; 10 to 44 V
normal operating range
Logic supply voltage, VDD, 3 to 5.5 V
Four output currents, IO(max) , options: 1, 1.5, 2, and 3 A
Stepping control for phase input (full or half step)
Built-in sense resistor detects motor current
Compact ZIP 23-pin molded package (SLA package)
Self-excitation PWM control with fixed off-time
Built-in synchronous rectifying circuit reduces losses at
PWM-off
Synchronous PWM function prevents noise generation in
motor Hold mode
Sleep function reduces power consumption of drivers in
Standby mode
Protection circuit detects motor coil open/short and
prevents overheating due to avalanche breakdown
Externally-adjustable (3.2 μs /5.2 μs) blanking time
(minimum on-time)
Package: 23-pin ZIP (type SLA)
Description
This document describes the function and features of SLA7080M
series, which are unipolar 2-phase stepping motor driver ICs.
Four levels of output current are available from the incorporated
MOSFETs, corresponding to the rated output current ratings.
All current ratings are available with protection against motor
coil shorts or motor open wire detection.
The SLA7080M series has a multichip structure, for enhanced
thermal dispersion.The Control IC (MIC), four power elements
(MOSFET), and dual sense resistors, are all separate ICs.
Built-in sense resistors for each phase allow accurate track-
ing of performance without additional external components.
Low-power sleep mode as well as reduced power during PWM
off-time maximize energy savings.
Not to scale
Functional Block Diagram
28610.23
SENSEA
Rs
MIC
Pre-
Driver
Protect
Logic Block
Reg.
Pre-
Driver
Protect
+
C- omp
OSC
PWM
Control
Synchro
Control
PWM
Control
+
Com-p
OSC
SYNC GND
SENSEB
Rs



Allegro Micro Systems
Allegro Micro Systems

SLA7080M Datasheet Preview

SLA7080M Datasheet

Unipolar 2-Phase Stepping Motor Driver ICs

No Preview Available !

SLA7080M pdf
SLA7080Mwww.DataSheet4U.com
Series
Unipolar 2-Phase Stepping Motor Driver ICs
Selection Guide
Part Number
SLA7080MPR
SLA7081MPR
SLA7082MPR
SLA7083MPR
Output Current
(A)
1
1.5
2
3
Built-In Sense
Resistor
Packing
Yes 18 pieces per tube
Absolute Maximum Ratings, valid at TA = 25°C
Characteristic
Symbol
Motor Supply Voltage
Main Supply Voltage
Logic Supply Voltage
VM
VBB
VDD
SLA7080MPR
Output Current
SLA7081MPR
IO SLA7082MPR
SLA7083MPR
Logic Input Voltage
REF Input Voltage
Allowable Power Dissipation
Maximum Junction Temperature
Nominal Operating Temperature
Storage Temperature
VIN
VREF
PD
TJ(max)
TA
Tstg
No heatsink
Notes
Rating
46
46
6
1.0
1.5
2.0
3.0
–0.3 to VDD + 0.3
–0.3 to VDD + 0.3
4.7
150
–20 to 85
–30 to 150
Unit
V
V
V
A
A
A
A
V
V
W
ºC
ºC
ºC
Recommended Operating Range
Characteristic
Motor Supply Voltage
Main Supply Voltage
Logic Supply Voltage
Symbol
VM
VBB
VDD
Case Temperature
TC
Notes
VDD surge voltage = ± 0.5 V
Without heatsink
With heatsink
On pin 12, adjacent
to case
Min Max Unit
– 44 V
10 44
V
3.0 5.5
V
– 90 ºC
– 80 ºC
All performance characteristics given are typical values for circuit or
system baseline design only and are at the nominal operating voltage and
an ambient temperature, TA, of 25°C, unless otherwise stated.
Allegro MicroSystems, Inc.
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
2


Part Number SLA7080M
Description Unipolar 2-Phase Stepping Motor Driver ICs
Maker Allegro Micro Systems
Total Page 20 Pages
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