1-2-1 2-Phase Stepper Motor Unipolar Driver ICs
SLA7080MPR/7081MPR/7082MPR/7083MPR
2-Phase/1-2-Phase Excitation
■Features
• Lineup of built-in current sense resistor
and built-in protection circuit-type
■Absolute Maximum Ratings
(Ta=25°C)
Parameter
Motor Supply Voltage
Driver Supply Voltage
Logic Supply Voltage
Output Current
Logic Input Voltage
REF Input Voltage
Sense Voltage
Symbol
VM
Ratings
Unit
V
Conditions
46
• Power supply voltages, VBB: 46 V (max),
10 to 44 V normal operating range
VBB
VDD
Io
46
V
6
V
• Logic supply voltages, VDD: 3.0 to 5.5 V
*1
–0.3 to VDD+0.3
–0.3 to VDD+0.3
±2
A
VIN
V
• Maximum output current Io: 1A, 1.5A, 2A,
and 3A
VREF
VRS
V
V
Excluding tw<1µs
When Ta = 25°C
When Tc = 25°C
• Self-excitation PWM current control with
fixed off time
4.7
Power Dissipation
PD
W
17
• Synchronous PWM chopping function
prevents motor noise in Hold mode
Junction Temperature
Operating Ambient Temperature
Storage Temperature
Tj
Ta
+150
°C
°C
°C
–20 to +85
–30 to +150
• Sleep mode for reducing the IC input
current in stand-by state
Tstg
*1: Output current value may be limited for the SLA7080MPR(1.0A), SLA7081MPR(1.5A), SLA7082MPR(2.0A),
SLA7083MPR(3.0A), depending on the duty ratio, ambient temperature, and heating conditions.
Do not exceed junction temperature of Tj under any circumstances.
• ZIP type 23-pin molded package (SLA
package)
■Recommended Operating Conditions
Ratings
Parameter
Symbol
Unit
Conditions
min.
max.
44
Motor Supply Voltage
Driver Supply Voltage
Logic Supply Voltage
VM
VBB
VDD
V
V
V
10
44
The VDD surge voltage should be 0.5V or lower.
When controlling the current for SLA7080M
When controlling the current for SLA7081M/SLA7083M
When controlling the current for SLA7082M
Rear center (without Fin)
3.0
5.5
0.3
0.45
0.4
90
REF Input Voltage
Case Temperature
VREF
Tc
0.04
V
°C
■Electrical Characteristics
(VDD=5V, VBB=24V, Ta=25°C, unless otherwise specified)
Ratings
typ.
Parameter
Symbol
Unit
Conditions
min.
max.
15
100
5
IBB
IBBS
IDD
mA
µA
mA
V
In operation
Sleep Mode
Main Supply Current
Logic Supply Current
Output MOSFET Breakdown Voltage
V(BR)DSS
100
VBB=44V, ID=1mA
0.7
0.85
0.6
0.4
0.24
1.1
1.25
1.2
SLA7080M, ID=1.0A
SLA7081M, ID=1.5A
SLA7082M, ID=2.0A
SLA7083M, ID=3.0A
SLA7080M, ID=1.0A
SLA7081M, ID=1.5A
SLA7082M, ID=2.0A
SLA7083M, ID=3.0A
When Duty = 50%
0.45
0.25
0.18
0.85
1.0
Output MOSFET ON Resistance
RDS(ON)
Ω
Output MOSFET Diode Forward Voltage
VF
V
0.95
0.95
2.1
Fclk
VIL
VIH
IIL
250
kHz
V
Maximum Clock Frequency
Logic Input Voltage
0.25VDD
0.75VDD
±1
±1
Logic Input Current
µA
IIH
0.04
0.04
0.04
0.04
2.0
0.3
0.45
0.4
0.45
VDD
SLA7080M
SLA7081M
SLA7082M
SLA7083M
VREF
V
REF Input Voltage
VREFS
IREF
VSENSE
Sleep (“IBBS”, “output: OFF”)
±10
VREF
0.305
0.305
0.205
0.155
3.2
µA
V
REF Input Current
Sense Voltage
VREF–0.03
0.296
0.296
0.199
0.150
VREF+0.03
0.314
0.314
0.211
0.160
Including the resistance due to the product configuration (about 5 mΩ) for SLA7080M
Including the resistance due to the product configuration (about 5 mΩ) for SLA7081M
Including the resistance due to the product configuration (about 5 mΩ) for SLA7082M
Including the resistance due to the product configuration (about 5 mΩ) for SLA7083M
B_SEL: Low
Sense Resistance
Rs
Ω
PWM Minimum ON Time
(blanking time)
ｔon(min)
µs
5.2
B_SEL: High
toff
TSE
tcon
tcoff
Vocp
13
µs
µS
µS
µS
V
PWM OFF Time
Sleep-Enable Recovery Time
100
Sleep
1.5
1.0
0.7
2.3
3.5
4.5
2.0
140
Phase IN → Out ON
Phase IN → Out OFF
When the motor coil shorts out
SLA7080MPR/7081MPR
SLA7082MPR
Switching Time
0.65
0.75
Overcurrent Sense Voltage
Overcurrent Sense Current
Vocp÷Rs
Iocp
A
SLA7083MPR
topp
Ttsd
VFlagL
VFlagH
IFlagL
IFlagH
1.5
2.5
µS
°C
Time Not Sensing Load Disconnection
Thermal Protection Temperature
Rear of case (at the saturation temperature)
IFlagL= 1.25mA
IFlagH= –1.25mA
1.25
1.25
Flag Output Voltage
V
1.25VDD
–1.25
Flag Output Current
mA
*The direction in which current flows out of the device is regarded as negative.
ICs
102
ETC [ ETC ]
