Document
2W1-2 Phase Excitation/Micro-step Support
SLA7042M/SLA7044M
2-Phase Stepper Motor Unipolar Driver ICs
sAbsolute Maximum Ratings
Parameter Motor supply voltage FET Drain-Source voltage Control supply voltage Input voltage Output current Power dissipation Channel temperature Storage temperature Symbol VCC V DSS VDD VIN IO PD Tch Tstg Ratings SLA7042M 46 100 7 −0.5 to VDD+0.5 1.2 4.5 (Without Heatsink) +150 −40 to +150 3 SLA7044M Units V V V V A W °C °C
sElectrical Characteristics
Ratings Parameter Control supply current Control supply voltage Input Terminals voltage DATA, CLOCK Input hysteresis and voltage STROBE Input current Input voltage Input current Symbol min IDD Conditions VDD VIH Conditions VIL Conditions VH Conditions II Conditions VREF Conditions VDISABLE Conditions IREF Conditions V ref Conditions V ref Conditions V ref Conditions V ref Conditions V ref Conditions V ref Conditions V ref Conditions V ref Conditions V DS Conditions VDSS Conditions IDSS Conditions V SD Conditions T OFF Conditions T OFF Conditions T OFF Conditions Tr Conditions Tstg Conditions Tf Conditions tsDAT Conditions thDAT Conditions twDAT Conditions twhCLK Conditions tpsSTB Conditions twhSTB Conditions SLA7042M typ V DD=5.5V 5 V DD=5V 0 V DD=5V 1 V DD=5V VDD=5V, VI=0 or 5V 0.4 V DD=5V VDD−1 V DD=5V ±1 VDD=5V, VI=0 or 5V 0 MODE 0 20 MODE 1 40 MODE 2 55.5 MODE 3 71.4 MODE 4 83 MODE 5 91 MODE 6 100 MODE 7 0.8 ID=1.2A, VDD=4.75V 100 IDSS=4mA, VDD=5V 4 VDSS=100V, VDD=5V 1.2 ID=1.2A 7 MODE 1, 2 9 MODE 3, 4, 5 11 MODE 6, 7 0.5 VDD=5V, ID=1A 0.7 VDD=5V, ID=1A 0.1 VDD=5V, ID=1A 75 Inter-clock 75 Inter-clock 150 100 100 Strobe=L from clock 100 100 150 ns 100 100 Strobe=L from clock 75 Inter-clock 75 Inter-clock ID=3A 7 MODE 1, 2 9 MODE 3, 4, 5 11 MODE 6, 7 0.5 V DD=5V, ID=1A 0.7 V DD=5V, ID=1A 0.1 V DD=5V, ID=1A V DSS=100V, VDD=5V 2.3 100 IDSS=4mA, VDD=5V 4 ID=3A, VDD=4.75V V DD=5V, VI=0 or 5V 0 MODE 0 20 MODE 1 40 MODE 2 55.5 MODE 3 71.4 MODE 4 83 MODE 5 91 MODE 6 100 MODE 7 1.4 VDD V DD−1 VDD=5V ±1 2.5 0.4 VDD=5V VDD 1.5 0 VDD=5V 1 VDD=5V V DD=5V, VI=0 or 5V 2.5 V max 7 5.5 5 min SLA7044M typ VDD=5.5V 5 VDD=5V 1.5 Units max 7 5.5 5 mA V V
4.5 3.5
4.5 3.5
V ±1
±1
µA
REF terminal
µA
DC characteristics
Reference voltage selection output voltage
%
FET ON voltage FET Drain-Source voltage FET drain leakage current FET diode forward voltage
V V mA V
Chopper off time
µs
AC characteristics
Switching time
µs
Data setup time "A" Data hold time "B" Data pulse time "C" Clock pulse width "D" Stabilization time before strobe "E" Strobe pulse H width "F"
44
SLA7042M/SLA7044M
2-Phase Stepper Motor Unipolar Driver ICs (2W1-2 Phase Excitation/Micro-step Support)
SLA7042M/SLA7044M
sInternal Block Diagram
OUT A OUT A VDD A VDD B OUT B OUT B Rs B
OFF time timer (TOFF 3-step switching) Chopper ON Noise filter (2 µ s)
Reference voltage Vref b a c 0% 0 0 0 20% 0 1 0 40% 1 0 0 55.5% 1 1 0 71.4% 0 0 1 83% 0 1 1 91% 1 0 1 100% 1 1 1
Reference voltage c b a Vref 0 0 0 0% 0 0 1 20% 0 1 0 40% 0 1 1 55.5% 1 0 0 71.4% 1 0 1 83% 1 1 0 91% 1 1 1 100%
OFF time timer (TOFF 3-step switching) Chopper ON Noise filter (2 µ s)
PWM
PWM
Phase COMP Reset Ph.
Phase
Latch
a b c c
Latch
b a Ph.
Reset
COMP
Reset
Shift register
Ph. a b c c
Shift register
b a Ph.
Reset
Enable
Enable
CLOCK A
CLOCK B
Rs A
GND A
STROBE A
STROBE B
DATA A
sOutput Current Formula
IO = K VREF • 3 RS K: Reference voltage setting rate by serial signal (See the internal block diagram)
sDiagram of Standard External Circuit
VCC
5V 4 VDDA ENABLE VREF 3 14 R2 C1 GND A GND B 7 12 C1 : 500 to 10000pF RS A 9 RS REF A REF B 15 1 8 11 18 VDDB OUT A OUT A OUT B OUT B CLOCK A 5 CLOCK B
R1
DATA B
SLA7042M SLA7044M
16 2 13
STROBE A STROBE B DATA A
6 DATA B 17 RS B 10 RS
GND B
Ref A
Ref B
SLA7042M/SLA7044M
45
2-Phase Stepper Motor Unipolar Driver ICs (2W1-2 Phase Excitation/Micro-step Support)
SLA7042M/SLA7044M
sExternal Dimensions
φ 3.2±0.15
31±0.2 24.4±0.2 16.4±0.2
(Unit: mm)
φ 3.2±0.15x3.8
4.8±0.2 1.7±0.1
9.9±0.2
16±0.2
13±0.2
Lot No.
(3) 6.7±0.5
0.55 +0.2 −0.1
1 −0.1 17xP1.68±0.4=28.56±1
+0.2
0.65 −0.1
+0.2
1 −0.1 17xP1.68±0.4=28.56±1
+0.2
0.55 −0.1 4±0.7
+0.2
2.2±0.1 6±0.6 7.5±0.6
31.3±0.2
1 2 3 • • • • • • • • • • • • 16 17 18 1 2 3 • • • • • • • • • • • • 16 17 18
Forming No. No.871
Forming No. No.872
sSerial Data Pattern
OUT excitation (MODE χ)
Phase a b c 0
OUT excitation (MODE χ)
Phase a b c
CLOCK STROBE MODE0 (0%) MODE1 (20%) MODE2 (40%) MODE3 (55.5%) MODE4 (71.4%) MODE5 (83%) MODE6 (91%) MODE7 (100%)
0
0
0
0
0
0
0
0
0
See page 48 for details of PG001M serial signal generator IC for SLA7042M and SLA7044M.
DATA
0
0
0
0
0
0
0
0
0
0
Successively output this serial data and set any current. Then, determine the step time of the reference voltage Vref at STROBE signal intervals.
46
SLA7042M/SLA7044M
1.6
±0.6
R-End
9.7 −0.1
+0.2
0.65 −0.1
+0.2
3 ±0.6 ±0.6 4.6
Part No.
2.45±0.2
2-Phase Stepper Mot.