Stepper Motor Driver IC
MTD2003G
■Block diagram / Typical application
Vcc=5V
12,24
2
6
4
9
7
11
OUT4
Vcc
OUT1
OUT2 VmmA VmmB OUT3
TSD
IN1
IN2
IN4
IN3
23
22
13
14
I0
I1
Vcc
19
Vr
Current
Sensor
Current
Sensor
Vcc
BLANK
-
-
Q
R
Q
R
S
21
15
+
+
S
Rt
Ct
I0
I1
18
CR
Vref
LG
PG
VsA
RsA
Rs
RsB
Rs
VsB
20
5
TAB
8
17
●Constant chopping current level
●Recommended component values
Symbol
Rt
Recommended component values
Unit
kΩ
pF
Vr
10×Rs
=
− 0.015
Ichop
18
Ct
3300
Vcc
Vr
V
●ONE SHOT OFFꢀTIME
1
=
f
0.72×Ct×Rt
Shindengen Electric Mfg.Co.Ltd
W1002