1-2-1 2-Phase Stepper Motor Unipolar Driver ICs
SLA7075MR, MPR, MPRT/7076MR, MPR, MPRT/7077MR, MPR, MPRT/7078MR, MPR, MPRT 2-Phase to 4W 1-2 Phase Excitation Support, Built-in Sequencer
■Features
■Absolute Maximum Ratings
• Lineup of built-in current sense resistor and
built-in protection circuit-type
Parameter
Symbol
Ratings
Unit
V
Remarks
Motor Supply Voltage
Driver Supply Voltage
Logic Supply Voltage
Output Current
V
M
46
• Power supply voltages, VBB: 46 V (max), 10 to
44 V normal operating range
V
BB
46
V
VDD
6
*1
V
• Logic supply voltages, VDD: 3.0 to 5.5 V
Io
A
Vref=0.4V, Mode F
• Maximum output currents: 1 A, 1.5 A, 2 A, and
3 A
Logic Input Voltage
REF Input Voltage
Sense Voltage
V
IN
REF
RS
–0.3 to VDD+0.3
–0.3 to VDD+0.3
±2
V
V
V
• Clock input method (built-in sequencer)
V
V
Excluding tw<1µs
Power Dissipation
4.7
When T
a
= 25°C
= 25°C
• Self-excitation PWM current control with fixed
off-time
PD
W
17
When T
c
Junction Temperature
Operating Ambient Temperature
Storage Temperature
T
j
+150
°C
°C
°C
• Synchronous PWM chopping function
prevents motor noise in Hold mode
Ta
–20 to +85
–30 to +150
Tstg
• Sleep mode for reducing the IC input current
in stand-by state
*1: Output current value may be limited for the SLA7075MR, MPR, MPRT (1.0 A), SLA7076MR, MPR, MPRT (1.5 A),
SLA7077MR, MPR, MPRT (2.0 A), and SA7078MR, MPR, MPRT (3.0 A), depending on the duty ratio, ambient
temperature, and heating conditions.
• ZIP type 23-pin molded package (SLA
package)
Do not exceed junction temperature of Tj under any circumstances.
■Recommended Operating Conditions
Rating
Parameter
Symbol
Unit
Remarks
min.
max.
44
Motor Supply Voltage
VM
VS
V
V
Driver Supply Voltage
Logic Supply Voltage
Case Temperature
10
44
VDD
TC
3.0
5.5
90
V
The VCC surge voltage should be 0.5 V or lower
Temperature at Pin-12 Lead (without heatsink)
°C
■Electrical Characteristics
Parameter
Ratings
typ.
Symbol
Unit
Conditions
min.
100
max.
15
100
5
mA
µA
mA
V
In operation
Sleep 1 and Sleep 2 modes
I
BB
BBS
DD
(BR)DSS
Main Supply Current
I
I
Logic Supply Current
Output MOSFET Breakdown Voltage
VBB=44V, ID=1mA
V
0.7
0.45
0.25
0.18
0.85
1.0
0.85
0.6
0.4
0.24
1.1
1.25
1.2
SLA7075M, I
SLA7076M, I
SLA7077M, I
SLA7078M, I
SLA7075M, I
SLA7076M, I
SLA7077M, I
SLA7078M, I
D=1.0A
D=1.5A
D=2.0A
D=3.0A
D=1.0A
D=1.5A
D=2.0A
D=3.0A
Ω
Output MOSFET ON Resistance
RDS(ON)
V
F
V
Output MOSFET Diode Forward Voltage
0.95
0.95
2.1
250
kHz
V
When Clock Duty = 50%
Maximum Clock Frequency
Logic Input Voltage
Fclock
0.25VDD
V
IL
IH
IL
IH
0.75VDD
V
I
I
±1
±1
µA
Logic Input Current
0.04
0.04
0.04
0.04
2
0.3
0.45
0.4
SLA7075M, within the specified current limit
SLA7076M, within the specified current limit
SLA7077M, within the specified current limit
SLA7078M, within the specified current limit
Output (OFF) Sleep 1
V
REF
V
REF Input Voltage
0.45
DD
V
V
I
REFS
REF
±10
µA
V
µS
µS
µS
REF Input Current
SENSE Sense Voltage
Sleep-Enable Recovery Time
VREF
When step reference current ratio is 100%
Sleep1&Sleep2
Clock → Out ON
V
SENSE
SE
100
T
2.0
1.5
t
t
con
coff
Switching Time
Clock → Out OFF
0.296
0.296
0.199
0.150
0.65
0.305
0.305
0.205
0.155
0.7
0.314
0.314
0.211
0.160
0.75
SLA7075M, tolerance of ±3%
SLA7076M, tolerance of ±3%
SLA7077M, tolerance of ±3%
SLA7078M, tolerance of ±3%
SLA707xMPR, MPRT, when motor coil shorts out
SLA7075MPR, MPRT/7076MPR, MPRT
SLA7077MPR, MPRT
Ω
Sense Resistance
R
S
V
A
Overcurrent Sense Voltage
Overcurrent Sense Current
V
ocp
2.3
3.5
I
ocp
4.6
140
SLA7078MPR, MPRT
°C
SLA707xMPRT, Rear of case (at the saturation temperature)
SLA707xMPR, MPRT, IFlagL=1.25mA
SLA707xMPR, MPRT, IFlagH=-1.25mA
Thermal Protection Temperature
Logic Output Voltage
T
V
V
I
std
LOL
LOH
LOL
LOH
1.25
1.25
V
V
DD–1.25
–1.25
Logic Output Current
mA
SLA707xMPR, MPRT
I
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
%
%
%
%
%
%
%
%
%
%
%
%
%
%
%
µS
µS
µS
µS
ModeF
ModeE
ModeD
ModeC
ModeB
ModeA
Mode9
Mode8
Mode7
Mode6
Mode5
Mode4
Mode3
Mode2
Mode1
ton(min)
toff1
Step Reference Current Ratio
1.7
12
9
PWM Minimum ON Time
PWM OFF Time
Mode 8 to F
Mode 4 to 7
Mode 1 to 3
toff2
toff3
7
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