92 ICs
1-2-1 2-Phase Stepper Motor Unipolar Driver ICs
Parameter Symbol Ratings Unit
SLA7027MU SLA7024M SLA7026M
Motor Supply Voltage VCC 46 V
FET Drain-Source Voltage VDSS 100 V
Control Supply Voltage VS46 V
Input Voltage VIN 7V
Reference Voltage VREF 2V
Output Current IO11.5 3 A
Power Dissipation PD1 4.5 (Without Heatsink) W
PD2 35 (TC=25°C) W
Channel Temperature Tch +150 °C
Storage Temperature Tstg –40 to +150 °C
■Electrical Characteristics
(Ta=25°C)
Ratings
Parameter Symbol SLA7027MU SLA7024M SLA7026M Unit
min. typ. max. min. typ. max. min. typ. max.
Control Supply Current IS10 15 10 15 10 15 mA
Condition VS=44V VS=44V VS=44V
Control Supply Voltage VS10 24 44 10 24 44 10 24 44 V
FET Drain-Source Voltage VDSS 100 100 100 V
Condition VS=44V, IDSS=250
µ
AVS=44V, IDSS=250
µ
AVS=44V, IDSS=250
µ
A
FET ON Voltage VDS 0.85 0.6 0.85 V
Condition ID=1A, VS=14V ID=1A, VS=14V ID=3A, VS=14V
FET Drain Leakage Current IDSS 444
mA
Condition VDSS=100V, VS=44V VDSS=100V, VS=44V VDSS=100V, VS=44V
FET Diode Forward Voltage VSD 1.2 1.1 2.3 V
Condition ID=1A ID=1A ID=3A
IIH 40 40 40
µ
A
TTL Input Current Condition VIH=2.4V, VS=44V VIH=2.4V, VS=44V VIH=2.4V, VS=44V
IIL –0.8 –0.8 –0.8 mA
Condition VIL=0.4V, VS=44V VIL=0.4V, VS=44V VIL=0.4V, VS=44V
VIH 222
TTL Input Voltage Condition ID=1A ID=1A ID=3A V
(Active High) VIL 0.8 0.8 0.8
Condition VDSS=100V VDSS=100V VDSS=100V
VIH 222
TTL Input Voltage Condition VDSS=100V VDSS=100V VDSS=100V V
(Active Low) VIL 0.8 0.8 0.8
Condition ID=1A ID=1A ID=3A
Tr0.5 0.5 0.5
Condition VS=24V, ID=0.8A VS=24V, I D=1A VS=24V, ID=1A
Switching T ime Tstg 0.7 0.7 0.7
µ
s
Condition VS=24V, ID=0.8A VS=24V, I D=1A VS=24V, ID=1A
Tf0.1 0.1 0.1
Condition VS=24V, ID=0.8A VS=24V, I D=1A VS=24V, ID=1A
■Absolute Maximum Ratings
2-Phase/1-2 Phase ExcitationSLA7027MU/SLA7024M/SLA7026M
DC characteristics
AC characteristics
93
ICs
SLA7027MU/SLA7024M/SLA7026M
■Internal Block Diagram
■Typical Connection Diagram (Recommended component values)
1, 8, 11, 18pin
Description of pins
Excitation input signal
Active H Active L
Pin 1 OUTAOUTA
Pin 8 OUTAOUTA
Pin 11 OUTBOUTB
Pin 18 OUTBOUTB
Reg
IN A
VSA
RSA
234
GA
TDA
REFA
9
Reg
IN A
81 6 5 7 12 17 16 1811
IN B
IN B
VSB
GB
TDB
REFB
RSB
14 13 15 10
+
–
+
–
+
–
+
–
Active High
712 8 1 18 11
VSA VSB OUTAOUTBOUTBOUTA
RSA REFAREFBRSB GAGB
931410 4 15
C4
r6r5
r2
r1
r4r3
C1C213
TdA
TdB
INA
INA
INB
INB
INA
INA
INB
INB
6
5
17
16
Active
High
+
VCC (46V max)
Vb (5V)
RsRs
C3
SLA7024M
7026M
7027MU
2
Active Low
712 8 1 18 11
VSA VSB OUTAOUTBOUTBOUTA
RSA REFAREFBRSB GAGB
931410 4 15
C4
r6r5
r2
r1
r4r3
C1C213
TdA
TdB
INA
INA
INB
INB
INA
INA
INB
INB
6
5
17
16
Active
Low
+
VCC (46V max)
Vb (5V)
RsRs
C3
SLA7024M
7026M
7027MU
2
r1:510Ω
r2:100Ω (VR)
r3:47kΩ
r4:47kΩ
r5:2.4kΩ
r6:2.4kΩ
C1:470pF
C2:470pF
C3:2200pF
C4:2200pF
Rs:1Ω typ (7024M)
0.68Ω typ (7026M)
1.8Ω typ (7027MU)
Excitation signal time chart
2-phase excitation
clock 012301
INAHLLHHL
INALHHLLH
INBHHLLHH
INBLLHHLL
1-2 phase excitation
clock 0 1 2 3 4 5 6 7 0 1 2 3
INAHHLLLLLHHHLL
INALLLHHHLLLLLH
INBLHHHLLLLLHHH
INBLLLLLHHHLLLL
Excitation signal time chart
2-phase excitation
clock 012301
INALHHLLH
INAHLLHHL
INBLLHHLL
INBHHLLHH
1-2 phase excitation
clock 0 1 2 3 4 5 6 7 0 1 2 3
INALLHHHHHLLLHH
INAHHHLLLHHHHHL
INBHLLLHHHHHLLL
INBHHHHHLLLHHHH
r1:510Ω
r2:100Ω (VR)
r3:47kΩ
r4:47kΩ
r5:2.4kΩ
r6:2.4kΩ
C1:470pF
C2:470pF
C3:2200pF
C4:2200pF
Rs:1Ω typ (7024M)
0.68Ω typ (7026M)
1.8Ω typ (7027MU)
(1 to 2W)
(1 to 2W)
■External Dimensions (ZIP18 with Fin [SLA18Pin])
31
±0.2
24.4
±0.2
16.4
±0.2
3.2
±0.15
φ
16
±0.2
13
±0.2
9.9
±0.2
Part No.
Lot No.
3.2
±0.15
×3.8
φ
4.8
±0.2
1.7
±0.1
2.45
±0.2
R-End
6.7
±0.5
9.7
+1
–0.5
(3)
0.55
+0.2
–0.1
4
±0.7
1
+0.2
–0.1
17×P1.68
±0.4
=28.56
±1
0.65
+0.2
–0.1
31.3
±0.2
Forming No. No.871 Forming No. No.872
123 18 123 18
17×P1.68
±0.4
=28.56
±1
0.65
+0.2
–0.1
1
+0.2
–0.1
3
±0.6
0.55
+0.2
–0.1
2.2
±0.6
6
±0.6
7.5
±0.6
4.6
±0.6
1.6
±0.6
....... .......
(Unit : mm)
Product Mass : Approx.6g
