Stepper Motor Driver IC
MTD Series
MTD2003G
Features
Dual Full-bridge
PWM Stepper Motor Driver
●Dual full bridge for a bipolar stepper motor driver
●Output current 1.2A , Output voltage 35V
●Constant current control(fixed frequency PWM control)
●2-bit digital current selection
●Noise cancellation function
●Built-in flywheel and flyback diodes
●Cross conduction protection
●Thermal shutdown with hysteresis
●Surface mount package with heat sink(HSOP24)
HSOP24
■Absolute maxmum ratings / Ta=25℃
Parameter
Output voltage
Output current
Logic supply
Logic input
Allowable power dissipation *
Storge temperature range
Maximum Junction temperature
Symbol
Vmm
I
OUT
Vcc
V
LOGIC
P
D
Tstg
Tj
Rating
35
1.2
0∼6
0∼Vcc
2.1
-40∼150
150
Unit
V
A
V
V
W
℃
℃
*50.8×50.8×1mm
3
Glass Epoxy Board(FR4),200mm
2
Cupper Pattern
■Pin Assignment
MTD2003G
NC
OUT1
NC
Vmm A
Rs A
OUT2
GND
OUT3
Rs B
Vmm B
NC
OUT4
Vcc
7
8
9
10
11
12
18
17
16
15
14
13
1
2
3
4
5
6
■Truth table
TOP VIEW
24
23
22
21
20
19
IN 1 or 4
L
L
H
H
IN 2 or 3
L
H
L
H
OUT 1 or 4
OFF
L
H
OFF
OUT 2 or 3
OFF
H
L
OFF
Vref[V]
(at Vr=5V)
0.50±5%
0.35±8%
0.17±10%
-
Vcc
IN1
IN2
I0
Vs A
Vr
GND
CR
Vs B
NC
I1
IN3
IN4
I0
L
H
L
H
I1
L
L
H
H
Output current
ratio[%]
100
70
33
0
Shindengen Electric Mfg.Co.Ltd
W1002