2-Phase Unipolar Stepper Motor Driver
SLA7050M/7051M/7052M October 2005
Sanken Electric Co.,Ltd.
I03-002EA-051006
Example application circuit
Reference constant
CA=100μF／50V
CB=10μF／10V
Q1：
Rs=0.1～2Ω(Loss attention P≒Io
2
×Rs)
R1=10kΩ
R2=5.1kΩ(VR)
☆Be careful of especially the noise on Vcc line.
If the noise on Vcc line exceeds 0.5V, a product may incorrect-operate.
☆When you do not use Logic inputs (CW/CCW and F/H, Sync), please be sure to connect with
Vcc or GND.
☆To minimize the effect of system ground I･R drops on the logic and reference input signals,
Ground pin should have a low-impedance return to system groud.
☆2pin,4pin,15pin and 17pin are No Contact.
SLA7050M
SLA7051M
SLA7052M
マイコン
等
1813 1614
4
15
5
7
8
9
11
12
6
2
17
13
Vs
GA
NC
Out
A
OutA/
Out
B
OutB/
Vcc
Clock
Sync
CW/
CCW
Full/Half
Ref SenseBSenseA Gnd
10
r1
r2
Disable
Q1
RsA RsB
＋
＋
CA
CB
～Vs=10V 44V
～Vcc=3.0V 5.5V
S-Gnd
P-Gnd
Gnd
NC
GB
