1-2-1 2-Phase Stepper Motor Unipolar Driver ICs
STA7130MPR/7131MPR/7132MPR
2-Phase to 2W 1-2 Phase Excitation Support, Built-in Sequencer
■Features
• 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
• Maximum output currents: 1 A, 1.5 A, and 2 A
• Supporting the clock-input-method micro-step
drive (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 18-pin molded package (STA
package)
■Absolute
Maximum Ratings
Parameter
Motor Supply Voltage
Driver 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
(T
a
=25°C)
46
46
*1
–0.3 to +6
–0.3 to +6
V
M
V
BB
Io
V
IN
V
REF
V
RS
PD
T
j
T
a
T
stg
±0.5
3.5
12.5
+150
–20 to +80
–30 to +150
V
V
A
V
V
V
W
°C
°C
°C
Mode F
Excluding tw<1µs
When T
a
= 25°C
When T
c
= 25°C
*1: Output current value may be limited for the STA7130MPR (1.0 A), 7131MPR (1.5 A), and 7132MPR (2.0 A),
depending on the duty ratio, ambient temperature, and heating conditions.
Do not exceed junction temperature of T
j
under any circumstances.
■Recommended
Operating Conditions
Parameter
Motor Supply Voltage
Driver Supply Voltage
Case Temperature
Symbol
V
M
V
BB
T
C
10
Rating
min.
max.
44
44
85
Unit
V
V
°C
Temperature at Pin-10 Lead (without Fin)
Remarks
■Electrical
Characteristics
Parameter
Main Supply Current
Output MOSFET Breakdown Voltage
Output MOSFET ON Resistance
Symbol
I
BB
I
BBS
V
(BR)DSS
R
DS(ON)
100
0.7
0.25
0.18
0.85
0.95
0.95
250
0.7
2.3
±10
±10
0
2.0
V
REF
/3-0.03
100
±10
V
REF
/3
1.4
0.7
0.305
0.205
0.155
0.7
2.3
3.5
4.5
125
0.9
5.5
V
REF
/3+0.03
0.85
0.4
0.24
1.1
1.2
2.1
min.
Ratings
typ.
max.
10
3
Unit
mA
mA
V
Ω
(V
DD
=5V, V
BB
=24V, T
a
=25°C, unless otherwise specified)
Conditions
In operation
Sleep 1 and Sleep 2 modes
STA7130MPR
STA7131MPR
STA7132MPR
STA7130MPR
STA7131MPR
STA7132MPR
When Clock Duty = 50%
Output MOSFET Diode Forward Voltage
Maximum Clock Frequency
Logic Input Voltage
Logic Input Current
REF Input Voltage
REF Input Current
Sense Voltage
Sleep-Enable Recovery Time
Switching Time
V
F
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
V
ocp
I
ocp
0.65
V
kHz
V
µA
V
µA
V
µS
µS
µS
Ω
Output OFF (Sleep 1)
When step reference current ratio is 100%
Sleep1&Sleep2
Clock
→
Out ON
Clock
→
Out OFF
STA7130MPR
STA7131MPR
STA7132MPR
When motor coil shorts out
STA7130MPR
STA7131MPR
STA7132MPR
Rear of case (at the saturation temperature)
I
LOL
=5mA
V
LOL
=0.8V
Sense Resistance
Overcurrent Sense Voltage
Overcurrent Sense Current
Vocp÷Rs
Thermal Protection Temperature
Logic Output Voltage
Logic Output Current
0.75
V
A
°C
V
mA
%
%
%
%
%
%
%
%
µS
µS
µS
µS
T
tsd
V
LOL
I
LOL
ModeF
ModeE
ModeC
ModeA
Step Reference Current Ratio
Mode8
Mode6
Mode4
Mode2
PWM Minimum ON Time
ton(min)
toff1
toff2
PWM OFF Time
toff3
*The direction in which current flows out of the device is regarded as negative.
0.8
5
100
98.1
92.4
83.1
70.7
55.5
38.2
19.5
1.5
11.5
8.5
7
VREF=0.1V to 0.9V
Mode 8 to F
Mode 4 to 6
Mode 2
98
ICs
STA7130MPR/7131MPR/7132MPR
■Internal
Block Diagram
■Pin
Assignment
Pin No.
Symbol
OutA
OutA/
SenseA
M
O
M1
M2
Sleep2
Clock
V
BB
Gnd
Ref/Sleep1
Reset
CW/CCW
Sync
Flag
SenseB
OutB/
OutB
Phase A output
Phase A output
Phase A current sense
2 phase excitation state output monitor output
Excitation mode setting input
Sleep 2 setting input
Step Clock input
Driver supply (motor supply)
Device GND
Control current mode/Sleep 1 setting input
Internal logic reset input
Normal/reverse control input
PWM control signal input
Coil open/shorted detection output
Phase B current sense
Phase B output
Phase B output
Function
1
2
11
15
4
5
6
7 13
8 12
9
17
18
MIC
Pre-
Driver
Protect
1/3
+
Comp
-
Rs
DSC
Sequencer
&
Sleep Circuit
Reg.
Pre-
Driver
Protect
DAC
TSD
Synchro
Control
DAC
1/3
+
Comp
-
DSC
Rs
SenseA
3
PWM
Control
PWM
Control
16
SenseB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Ref/Sleep1
CW/CCW
Sleep2
Reset
Clock
OutB
OutB
■Typical
Connection Diagram
9±0.2
V
DD
=3.0V to 5.5V
Sleep
Q1
r1
r11
r10
C1
OutA
OutA
VBB
OutB
OutB
CA
(1)
+
3.3±0.5
+
CB
Clock
CW/COW
(6.9)
Sync
Mo
Flag
Ref/Sleep1
SerseA
r2
r3
C2
One-point
Gnd
Logic Gnd
Power Gnd
Gnd
Sense
0.55
–0.1
(3.6)
OutA
Micro-
computer,
etc.
r4 to r9
Flag
V
BB
M1
M2
Reset
M1
M2
Sleep2
M
0
14
Sync
10
Gnd
■External
Dimensions (ZIP18 with Fin [STA18Pin])
(Unit : mm)
V
S
=10V to 44V
25.25±0.3
4±0.2
1.3±0.1
(Measured at the root)
R-end
STA7130MPR Series
+0.2
)
R1
(4–
0.45
–0.1
+0.2
17XP1.27±0.5=21.59±1
(Measured at the tip)
25.55 (Including the resin burr)
C1.5±0.5
2.54±0.5
(Measured at the tip)
Forming No.
No.434
Product Mass : Approx.6g
ICs
99
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