SLA7080M Series
Unipolar 2-Phase Stepping Motor Driver ICs
Features and Benefits
▪
Power supply voltage, V
BB
, 46 V maximum; 10 to 44 V
normal operating range
▪
Logic supply voltage, V
DD
, 3 to 5.5 V
▪
Four output currents, I
O
(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)
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.
Package: 23-pin ZIP (type SLA)
Not to scale
Functional Block Diagram
REF/SLEEP
B_
SEL
OUTB
OUTB
OUTB
OUTB
OUTA
OUTA
OUTA
OUTA
MIC
Pre-
Driver
Protect
+
Comp
-
Rs
OSC
FLAG
VDD
VBB
INB
INB
INA
INA
Reg.
Logic Block
Pre-
Driver
Protect
SENSEA
PWM
Control
Synchro
Control
PWM
Control
+
Comp
-
OSC
Rs
SENSEB
SYNC
GND
28610.23, Rev. 1
SANKEN ELECTRIC CO., LTD.
http://www.sanken-ele.co.jp/en/
SLA7080M Series
Unipolar 2-Phase Stepping Motor Driver ICs
Selection Guide
Part Number
SLA7080MPR
SLA7081MPR
SLA7082MPR
SLA7083MPR
Output Current
(A)
1
1.5
2
3
Yes
18 pieces per tube
Built-In Sense
Resistor
Packing
Absolute Maximum Ratings,
valid at T
A
= 25°C
Characteristic
Motor Supply Voltage
Main Supply Voltage
Logic Supply Voltage
Symbol
V
M
V
BB
V
DD
SLA7080MPR
Output Current
I
O
SLA7081MPR
SLA7082MPR
SLA7083MPR
Logic Input Voltage
REF Input Voltage
Allowable Power Dissipation
Maximum Junction Temperature
Nominal Operating Temperature
Storage Temperature
V
IN
V
REF
P
D
T
J
(max)
T
A
T
stg
No heatsink
Notes
Rating
46
46
6
1.0
1.5
2.0
3.0
–0.3 to V
DD
+ 0.3
–0.3 to V
DD
+ 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
Case Temperature
Symbol
V
M
V
BB
V
DD
T
C
V
DD
surge voltage = ± 0.5 V
Without heatsink
With heatsink
On pin 12, adjacent
to case
Notes
Min
–
10
3.0
–
–
Max
44
44
5.5
90
80
Unit
V
V
V
ºC
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, T
A
, of 25°C, unless otherwise stated.
28610.23, Rev. 1
SANKEN ELECTRIC CO., LTD.
2
SLA7080M Series
Unipolar 2-Phase Stepping Motor Driver ICs
ELECTRICAL CHARACTERISTICS valid at T
A
= 25°C, V
BB
= 24 V and V
DD
= 5 V, unless otherwise noted
Characteristics
Main Supply Current
Logic Supply Current
Symbol
I
BB
I
BBS
I
DD
SLA7080MPR
Output MOSFET On-Resistance
R
DS(on)
SLA7081MPR
SLA7082MPR
SLA7083MPR
SLA7080MPR
Output MOSFET Diode Forward
Voltage
V
F
SLA7081MPR
SLA7082MPR
SLA7083MPR
Output MOSFET Breakdown Voltage
Maximum Response Frequency
V
DSS
f
clk
V
IL
Logic Input Voltage
V
IH
Logic Input Current
I
IL
I
IH
SLA7080MPR
REF Input Voltage
V
REF
V
REFS
REF Input Current
SENSE Detect Voltage
I
REF
V
SENSE
SLA7080MPR, SLA7081MPR
Sense Resistor
1
R
s
SLA7082MPR
SLA7083MPR
PWM Minimum On-Time (Blanking
Time)
PWM Off-Time
Sleep Enable Recovery Time
Switching Time
t
on(min)
t
off
t
SE
t
don
t
doff
Sleep state
Phase INx
→
Phase OUTx on
Phase INx
→
Phase OUTx off
B_SEL = low
B_SEL = high
SLA7081MPR, SLA7083MPR
SLA7082MPR
Sleep state (output off)
V
BB
= 44 V, I
D
= 1 mA
Clock duty cycle = 50%
In operation
Sleep state
Conditions
Min
–
–
–
–
–
–
–
–
–
–
–
100
250
–
V
DD
×
0.75
–
–
0.04
0.04
0.04
2.0
–
V
REF
–
0.03
0.296
0.199
0.150
–
–
–
100
–
–
Typ
–
–
–
0.7
0.45
0.25
0.18
0.85
1.0
0.95
0.95
–
–
–
–
±1
±1
–
–
–
–
±10
V
REF
0.305
0.205
0.155
3.2
5.2
13
–
1.5
1.0
Max
15
100
5
0.85
0.6
0.4
0.24
1.1
1.25
1.2
2.1
–
–
V
DD
×
0.25
–
–
–
0.3
0.45
0.4
V
DD
–
V
REF
+
0.03
0.314
0.211
0.160
–
–
–
–
–
–
Units
mA
μA
mA
Ω
Ω
Ω
Ω
V
V
V
V
V
kHz
V
V
μA
μA
V
V
V
V
μA
V
Ω
Ω
Ω
μs
μs
μs
μs
μs
μs
Continued on the next page…
28610.23, Rev. 1
SANKEN ELECTRIC CO., LTD.
3
SLA7080M Series
Unipolar 2-Phase Stepping Motor Driver ICs
ELECTRICAL CHARACTERISTICS (continued) valid at T
A
= 25°C, V
BB
= 24 V and V
DD
= 5 V, unless otherwise noted
Characteristics
Protection Functions
2
Overcurrent Detect Voltage
Overcurrent Detect Current
(V
OCP
/ R
S
)
Delay to Open Load Detect
Overtemperature Protection Threshold
Temperature
V
OCP
I
OCP
t
OPP
T
TSD
V
FLAGL
FLAG Output Voltage
V
FLAGH
I
FLAGL
I
FLAGH
Measured at back surface of device case; device operating
such that self-generated heat has permeated detection circuits
on MIC; see Thermal Design section
I
FLAGL
= 1.25 mA
I
FLAGH
= –1.25 mA
At motor coil short circuit
SLA7080MPR, SLA7081MPR
SLA7082MPR
SLA7083MPR
0.65
–
–
–
1.5
–
–
V
DD
–
1.25
–
–1.25
0.7
2.3
3.5
4.5
2.0
140
–
–
–
–
0.75
–
–
–
2.5
–
1.25
–
1.25
–
V
A
A
A
μs
°C
V
V
mA
mA
Symbol
Conditions
Min
Typ
Max
Units
FLAG Output Current
1
External
2
Protection
sense resistor value approximately 5 mΩ in addition to value of built-in resistor.
circuit operates when V
SENSE
≥
V
OCP
.
Power Derating Chart
5
Allowable Power Dissipation, P
D
(W)
R
θJA
= 26.6°C/W
4
3
2
1
0
0
10
20
30
40
50
60
70
80
90
Ambient Temperature, T
A
(°C)
28610.23, Rev. 1
SANKEN ELECTRIC CO., LTD.
4
SLA7080M Series
Unipolar 2-Phase Stepping Motor Driver ICs
Performance Characteristics at T
A
= 25°C
1.4
1.2
1.0
1.4
1.2
1.0
SLA7080MPR
MOSFET V
DS(on)
vs. Case
Temperature
V
DS(on)
(V)
0.8
0.6
V
DS(on)
(V)
I
O
= 1 A
I
O
= 0.5 A
0.4
0.2
0
SLA7081MPR
MOSFET V
DS(on)
vs. Case
Temperature
I
O
= 1.5 A
0.8
0.6
0.4
0.2
0
I
O
= 1 A
–25
1.4
1.2
1.0
0
25
50
T
C
(°C)
75
100
125
–25
1.4
1.2
1.0
0
25
50
T
C
(°C)
75
100
125
SLA7082MPR
MOSFET V
DS(on)
vs. Case
Temperature
0.8
I
O
= 2 A
0.6
0.4
0.2
0
SLA7083MPR
MOSFET V
DS(on)
vs. Case
Temperature
V
DS(on)
(V)
V
DS(on)
(V)
0.8
0.6
0.4
0.2
0
I
O
= 3 A
I
O
= 2 A
I
O
= 1 A
I
O
= 1 A
0
25
50
T
C
(°C)
75
100
125
–25
1.1
–25
1.1
0
25
50
T
C
(°C)
75
100
125
1.0
1.0
SLA7080MPR
MOSFET
Body Diode
V
f
vs. Case
Temperature
I
O
= 1 A
0.9
0.8
SLA7081MPR
MOSFET
Body Diode
V
f
vs. Case
Temperature
I
O
= 1.5 A
0.9
V
f
(V)
V
f
(V)
0.8
0.7
I
O
= 0.5 A
I
O
= 1 A
0.7
0.6
0.6
–25
1.1
0
25
50
T
C
(°C)
75
100
125
–25
1.1
0
25
50
T
C
(°C)
75
100
125
I
O
= 3 A
1.0
1.0
SLA7082MPR
MOSFET
Body Diode
V
f
vs. Case
Temperature
I
O
= 2 A
0.9
0.8
I
O
= 1 A
0.7
SLA7083MPR
MOSFET
Body Diode
V
f
vs. Case
Temperature
0.9
I
O
= 2 A
V
f
(V)
V
f
(V)
0.8
I
O
= 1 A
0.7
0.6
0.6
–25
0
25
50
T
C
(°C)
75
100
125
–25
0
25
50
T
C
(°C)
75
100
125
28610.23, Rev. 1
SANKEN ELECTRIC CO., LTD.
5
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