Sanken Electric Co SLA7044M Datasheet
2W1-2 Phase Excitation/Micro-step Support
SLA7042M/SLA7044M
2-Phase Stepper Motor Unipolar Driver ICs
■Absolute Maximum Ratings
Parameter Symbol
Motor supply voltage VCC 46 V
FET Drain-Source voltage VDSS 100 V
Control supply voltage VDD 7V
Input voltage VIN −0.5 to VDD+0.5 V
Output current IO 1.2 3 A
Power dissipation PD 4.5 (Without Heatsink) W
Channel temperature Tch +150 °C
Storage temperature Tstg −40 to +150 °C
SLA7042M SLA7044M
■Electrical Characteristics
Parameter Symbol SLA7042M SLA7044M Units
DD 77
Control supply current
Control supply voltage VDD 4.5 5 5.5 4.5 5 5.5 V
Terminals
DATA,
CLOCK
and
STROBE
REF VDISABLE VDD−1VDD VDD−1VDD
terminal
DC characteristics
Reference voltage
selection output voltage
FET ON voltage
FET Drain-Source VDSS 100 100
voltage
FET drain leakage current
FET diode forward voltage
Chopper off time
Switching time
Data setup time "A"
Data hold time "B"
AC characteristics
Data pulse time "C"
Clock pulse width "D"
Stabilization time tpsSTB 100 100
before strobe "E"
Strobe pulse H width "F"
Input
voltage
Input hysteresis
voltage
Input
current
Input
voltage
Input
current
I
Conditions
VIH 3.5 5 3.5 5
Conditions
VIL 0 1.5 0 1.5
Conditions
VH 11
Conditions
II ±1 ±1
Conditions
VREF 0.4 2.5 0.4 2.5
Conditions
Conditions
IREF ±1 ±1
Conditions
Vref 00
Conditions
Vref 20 20
Conditions
Vref 40 40
Conditions
Vref 55.5 55.5
Conditions
ref 71.4 71.4
V
Conditions
Vref 83 83
Conditions
Vref 91 91
Conditions
Vref 100 100
Conditions
V
DS 0.8 1.4
Conditions
Conditions
I
DSS 44
Conditions
V
SD 1.2 2.3
Conditions
TOFF 77
Conditions
T
OFF 99
Conditions
TOFF 11 11
Conditions
Tr 0.5 0.5
Conditions
T
stg 0.7 0.7
Conditions
Tf 0.1 0.1
Conditions
tsDAT 75 75
Conditions
thDAT 75 75
Conditions
twDAT 150 150
Conditions
twhCLK 100 100
Conditions
Conditions
twhSTB 100 100
Conditions
min typ max min typ max
VDD=5.5V VDD=5.5V
VDD=5V VDD=5V
VDD=5V VDD=5V
VDD=5V VDD=5V
VDD=5V, VI=0 or 5V VDD=5V, VI=0 or 5V
VDD=5V VDD=5V
VDD=5V VDD=5V
VDD=5V, VI=0 or 5V VDD=5V, VI=0 or 5V
MODE 0 MODE 0
MODE 1 MODE 1
MODE 2 MODE 2
MODE 3 MODE 3
MODE 4 MODE 4
MODE 5 MODE 5
MODE 6 MODE 6
MODE 7 MODE 7
ID=1.2A, VDD=4.75V ID=3A, VDD=4.75V
IDSS=4mA, VDD=5V IDSS=4mA, VDD=5V
VDSS=100V, VDD=5V VDSS=100V, VDD=5V
ID=1.2A ID=3A
MODE 1, 2 MODE 1, 2
MODE 3, 4, 5 MODE 3, 4, 5
MODE 6, 7 MODE 6, 7
VDD=5V, I D=1A VDD=5V, ID=1A
VDD=5V, I D=1A VDD=5V, ID=1A
VDD=5V, I D=1A VDD=5V, ID=1A
Inter-clock Inter-clock
Inter-clock Inter-clock
Strobe=L from clock Strobe=L from clock
Ratings
Ratings
Units
mA
µ
µ
%
mA
µ
µ
ns
V
V
A
V
A
V
V
V
s
s
SLA7042M/SLA7044M
44
■Internal Block Diagram
SLA7042M/SLA7044M2-Phase Stepper Motor Unipolar Driver ICs (2W1-2 Phase Excitation/Micro-step Support)
OUT A
OUT A
Rs A
VDD A
OFF time timer
(TOFF 3-step switching)
Chopper ON
Noise filter
(2 s)
PWM
Enable
GND A
µ
■Output Current Formula
VREF
K
O = •
I
3 RS
K: Reference voltage setting rate by serial signal
(See the internal block diagram)
COMP
Reference voltage Reference voltage
Vref
b
a
Ph.
Shift register
Ph.
c
0
0
0
0
1
0
1
0
0
1
1
0
0
0
1
0
1
1
1
0
1
1
1
1
Latch
abc
abc
Ref A
DATA A
CLOCK A
STROBE A
DATA B
STROBE B
Reset
Reset
Phase
55.5%
71.4%
100%
20%
40%
83%
91%
0%
c
b
0
0
0
0
0
1
0
1
1
0
1
0
1
1
1
1
Latch
Shift register
CLOCK B
a
0
1
0
1
0
1
0
1
abc
Ref B
55.5%
71.4%
Ph.
Ph.abc
20%
40%
83%
91%
100%
Vref
0%
Phase
Reset
Reset
VDD B
OFF time timer
(TOFF 3-step switching)
Chopper ON
Noise filter
µ
(2 s)
COMP
GND B
Enable
PWM
OUT B
OUT B
Rs B
■Diagram of Standard External Circuit
5V
R1
ENABLE
VREF
14
R2
C1 : 500 to 10000pF
C1
415181118
VDDAVDDB OUT A OUT A OUT B OUT B
3
REF A
REF B
SLA7042M
SLA7044M
GND A GND B RS A RS B
712 9 10
R
S RS
CLOCK A
CLOCK B
STROBE A
STROBE B
DATA A
DATA B
VCC
5
16
2
13
6
17
SLA7042M/SLA7044M
45
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