1-2-1 2-Phase Stepper Motor Unipolar Driver ICs
SLA7075MR, MPR/7076MR, MPR/7077MR, MPR/7078MR, MPR
2-Phase/4 W1-2 Phase Excitation Support, Built-in Sequencer
sFeatures
• Lineup of built-in current sense resistor and
built-in protection circuit-type
• 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, and
3A
• Built-in sequencer
• Self-excitation PWM current control with fixed
off-time
• Synchronous PWM chopping function prevents
motor noise in Hold mode
• Sleep mode for reducing the IC input current
in stand-by state
• ZIP type 23-pin molded package (SLA
package)
sAbsolute
Maximum Ratings
Parameter
Motor Supply Voltage
Driver Supply Voltage
Logic Supply Voltage
Output Current
Logic Input Voltage
REF Input Voltage
Sense Voltage
Power Dissipation
Junction Temperature
Operating Ambient Temperature
Storage Temperature
Symbol
Ratings
Unit
Remarks
V
M
V
BB
V
DD
Io
V
IN
V
REF
V
RS
PD
T
j
T
a
T
stg
46
46
6
*1
–0.3 to V
DD
+0.3
–0.3 to V
DD
+0.3
±2
4.7
17
+150
–20 to +85
–30 to +150
V
V
V
A
V
V
V
W
°C
°C
°C
Vref=0.4V, Mode F
Excluding tw<1µs
When T
a
= 25°C
When T
c
= 25°C
*1: Output current value may be limited for the SLA7075MR, MPR (1.0 A), SLA7076MR, MPR (1.5 A), SLA7077MR, MPR
(2.0 A), and SA7078MR, MPR (3.0 A), depending on the duty ratio, ambient temperature, and heating conditions.
Do not exceed junction temperature of T
j
under any circumstances.
sRecommended
Operating Conditions
Parameter
Motor Supply Voltage
Driver Supply Voltage
Logic Supply Voltage
REF Input Voltage
Case Temperature
Symbol
V
M
V
S
V
DD
V
REF
T
C
Rating
min.
10
3.0
0.0
max.
44
44
5.5
0.4
90
Unit
V
V
V
V
°C
The V
CC
surge voltage should be 0.5 V or lower
When operating current control
Temperature at Pin-12 Lead (without heatsink)
Remarks
sElectrical
Characteristics
Parameter
Main Supply Current
Logic Supply Current
Output MOSFET Breakdown Voltage
Output MOSFET ON Resistance
Symbol
I
BB
I
BBS
Icc
V
(BR)DSS
R
DS(ON)
100
0.7
0.45
0.25
0.18
0.85
1.0
0.95
0.95
250
0.25V
DD
0.75V
DD
±1
±1
0.04
0.04
0.04
0.04
2
±10
V
REF
100
2.0
1.5
0.305
0.305
0.205
0.155
0.7
2.3
3.5
4.6
0.3
0.45
0.4
0.45
V
DD
0.85
0.6
0.4
0.24
1.1
1.25
1.2
2.1
min
Ratings
typ
max
15
100
5
Unit
mA
µA
mA
V
Ω
In operation
Sleep 1 and Sleep 2 modes
VBB=44V, ID=1mA
SLA7075M, ID=1.0A
SLA7076M, ID=1.5A
SLA7077M, ID=2.0A
SLA7078M, ID=3.0A
SLA7075M, ID=1.0A
SLA7076M, ID=1.5A
SLA7077M, ID=2.0A
SLA7078M, ID=3.0A
When Clock Duty = 50%
Conditions
Output MOSFET Diode Forward Voltage
Maximum Clock Frequency
Logic Input Voltage
Logic Input Current
V
F
V
kHz
V
µA
Fclock
V
IL
V
IH
I
IL
I
IH
V
REF
V
REFS
I
REF
V
SENSE
T
SE
t
con
t
coff
R
S
REF Input Voltage
V
SLA7075MR/7075MPR,
SLA7077MR/7076MPR,
SLA7077MR/7077MPR,
SLA7078MR/7078MPR,
Output (OFF) Sleep 1
within
within
within
within
the
the
the
the
specified
specified
specified
specified
current
current
current
current
limit
limit
limit
limit
REF Input Current
SENSE Sense Voltage
Sleep-Enable Recovery Time
Switching Time
µA
V
µS
µS
µS
0.314
0.314
0.211
0.160
0.75
Ω
V
A
1.25
V
mA
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
µS
µS
µS
µS
Sense Resistance
Overcurrent sense voltage
Overcurrent sense current
Flag Output Voltage
Flag Output Current
V
ocp
I
ocp
V
FlagL
V
FlagH
I
FlagL
I
FlagH
ModeF
ModeE
ModeD
ModeC
ModeB
ModeA
Mode9
Mode8
Mode7
Mode6
Mode5
Mode4
Mode3
Mode2
Mode1
ton(min)
toff1
toff2
toff3
0.296
0.296
0.199
0.150
0.65
1.25V
DD
1.25
–1.25
100
98.1
95.7
92.4
88.2
83.1
77.3
70.7
63.4
55.5
47.1
38.2
29.0
19.5
9.8
1.7
12
9
7
When step reference current ratio is 100%
Sleep1&Sleep2
Clock
→
Out ON
Clock
→
Out OFF
SLA7075MR/7075MPR, tolerance of
±3%
SLA7076MR/7076MPR, tolerance of
±3%
SLA7077MR/7077MPR, tolerance of
±3%
SLA7078MR/7078MPR, tolerance of
±3%
SLA7075MPR/7076MPR/7077MPR/7078MPR, when motor coil shorts out
SLA7075MPR/7076MPR
SLA7077MPR
SLA7078MPR
SLA70750MPR/7076MPR/7077MPR/7078MPR, IFlagL=1.25mA
SLA7075MPR/7076MPR/7077MPR/7078MPR, IFlagH=-1.25mA
SLA7075MPR/7076MPR/7077MPR/7078MPR
Step Reference Current Ratio
PWM Minimum ON Time
PWM OFF Time
Mode 8 to F
Mode 4 to 7
Mode 1 to 3
116
ICs