Stepper Motor Driver IC
MTD2003S
■Block diagram / Typical application
Vcc=5V
7,25
9
13
8
24
19 23
Vcc
OUT1
OUT2 VmmA VmmB OUT3
OUT4
IN1
IN2
IN4
IN3
6
5
26
27
I0
I1
Vcc
2
Vr
Current
Sensor
Current
Sensor
Vcc
BLANK
-
-
Q
R
S
Q
R
S
4
+
+
Rt
I0
I1
31
28
CR
Vref
VsB
Ct
LG
1,15,16,
17,18,32
PG
VsA
RsA
Rs
RsB
Rs
3
11
21
30
●Constant chopping current level
●Recommended component values
Symbol
Rt
Recommended component values
Unit
Vr
10・Rs
− 0.015
=
Ichop
18
kΩ
pF
V
Ct
3300
Vcc
Vr
●ONE SHOT OFFꢀTIME
1
=
f
0.72・Ct・Rt
Shindengen Electric Mfg.Co.Ltd
W1002