Stepper Motor Driver IC
MTD2003G
MTD2003G
NC OUT1
NC Vmm A
Rs A OUT2
GND
OUT3 Rs B
Vmm B NC
OUT4 Vcc
1 2 3 4 5 6
7 8 9 10 11 12
TOP VIEW
24 ...
Description
MTD2003G
MTD2003G
NC OUT1
NC Vmm A
Rs A OUT2
GND
OUT3 Rs B
Vmm B NC
OUT4 Vcc
1 2 3 4 5 6
7 8 9 10 11 12
TOP VIEW
24 Vcc 23 IN1 22 IN2 21 I0 20 Vs A 19 Vr
GND
18 CR 17 Vs B 16 NC 15 I1 14 IN3 13 IN4
CPU or
GATE ARRAY
CPU or
GATE ARRAY GATE CIRCUIT
Vcc=5V
12,24 Vcc
26
4
9 7 11
OUT1 OUT2 VmmA VmmB OUT3
OUT4
TSD
GATE CIRCUIT
IN1 23
IN2 22
I0
I1
Vcc Rt
BLANK QR
S
OSC
18 CR
Ct
Current - Sensor
+
Current Sensor -
+
RQ S
VsA 20
LG PG RsA RsB 5 TAB 8
Vref VsB 17
Rs Rs
2-bit digital current selection
IN4 13
IN3 14 Vcc
19 Vr
21 I0
15 I1
Ichop
=
Vr 10 Rs
− 0.015
f = 0.72
1 Ct
Rt
(Unit : mm)
...
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