Stepper Motor Driver IC
MTD2003B
CPU or
GATE ARRAY
CPU or
GATE ARRAY GATE CIRCUIT
Vcc=5V
Vcc Vcc OUT1 OUT2 VmmA VmmB OUT3
OUT4
GATE CIRCUI...
Description
MTD2003B
CPU or
GATE ARRAY
CPU or
GATE ARRAY GATE CIRCUIT
Vcc=5V
Vcc Vcc OUT1 OUT2 VmmA VmmB OUT3
OUT4
GATE CIRCUIT
IN1 IN2
I0 I1
Vcc Rt Ct
OSC
BLANK QR S
CR
Current - Sensor
+
Current Sensor -
+
RQ S
PG LG
Vref
VsA RsA
RsB VsB
Rs Rs
2-bit digital current selection
IN4 IN3
Vcc
Vr
I0 I1
Ichop
=
Vr 10 Rs
− 0.015
f = 0.72
1 Ct
Rt
...
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