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
Stepper Motor Driver IC
■Electrical Characteristics
Parameter
●Output stage
Upper transistor saturation voltage
Lower transistor saturation voltage
Upper transistor leak current
Lower transistor leak current
Uppre diode forward drop
Lower diode forward drop
●Logic stage
Logic supply current （2circuit ON）
Logic supply current （2circuit OFF）
IN "H" input voltage
IN "L" input voltage
IN "H" input current
IN "L" input current
I0,I1 "H"input voltage
I0,I1 "L"input voltage
I0,I1 "H"input current
I0,I1 "L"input current
Vr input current
Vs input current
Comparator threshhold (100%)
Comparator threshhold (70%)
Comparator threshhold (33%)
Chopping frequency
Blanking time
Thermal shutdown temperature
I
CC(ON)
I
CC(OFF)
V
IN
H
V
IN
L
I
IN
H
I
IN
L
V
I0/I1
H
V
I0/I1
L
I
I0/I1
H
I
I0/I1
L
Iref
Is
Vs1
Vs2
Vs3
f
CHOP
tb
T
TSD
Ct=3300pF
V
I0/I1
=3.3 or 5V
V
I0/I1
=0V
Vr=5V
Vs=0V
Vr=5V, V
I0
=0V, V
I1
=0V
Vr=5V, V
I0
=5V, V
I1
=0V
Vr=5V, V
I0
=0V, V
I1
=5V
V
IN
=3.3 or 5V
V
IN
=0V
V
IN
=all 0V or all 5V
-
-
2.3
GND
-
-
2.3
GND
-
-
-
-
0.475
0.322
0.153
-
-
-
50
15
-
-
-
-3
-
-
-
-75
500
-1
0.5
0.35
0.17
20
1.55
150
65
25
Vcc
0.6
10
-20
Vcc
0.6
10
-100
650
-10
0.525
0.378
0.187
-
-
-
V
CE(sat)
H
V
CE(sat)
L
IrH
IrL
V
F
H
V
F
L
I
C
=1.0A
I
C
=1.0A
Vmm=30V, V
OUT
=0V
V
OUT
=30V, V
RS
=0V
I
F
=1.0A
I
F
=1.0A
-
-
-
-
-
-
1.2
0.7
-
-
1.4
1.3
1.4
1.0
10
10
1.6
1.5
Symbol
Condition
MTD2003G
Vcc=5V , Ta=25℃ unless otherwise specified
MIN
TYP
MAX
Unit
V
V
μA
μA
V
V
mA
mA
V
V
μA
μA
V
V
μA
μA
μA
μA
V
V
V
kHz
μs
℃
■Recommended operation conditions
Parameter
Junction temperature
Logic supply
Load supply
Symbol
Tj
Vcc
Vmm
Recommendation
-25∼120
4.75∼5.25
∼31
Unit
℃
V
V
■Thermal resistance
Symbol
θja
Rating
58
Unit
℃/W
*50.8×50.8×1mm
3
Glass Epoxy Board(FR4),200mm
2
Cupper Pattern
Shindengen Electric Mfg.Co.Ltd
W1002
Stepper Motor Driver IC
■Block diagram / Typical application
MTD2003G
Vcc=5V
12,24
Vcc
2
OUT1
6
4
9
7
11
OUT4
TSD
OUT2 VmmA VmmB OUT3
CPU
or
GATE ARRAY
GATE CIRCUIT
GATE CIRCUIT
23
22
13
14
Vcc
IN2
I0
I1
IN3
19
Vr
Vcc
BLANK
Q
Rt
18
CR
Ct
VsA
20
5
RsA
OSC
R
S
2-bit digital
current selection
Current
- Sensor
+
Current
Sensor -
+
R
S
Q
21
I0
15
I1
LG
TAB
PG
RsB
8
17
Vref
VsB
Rs
Rs
●Constant chopping current level
Ichop
=
Vr
−
0.015
10×Rs
●Recommended component values
Symbol
Recommended component values
Unit
Rt
Ct
Vr
18
3300
Vcc
kΩ
pF
V
●ONE SHOT OFF TIME
1
f
=
0.72×Ct×Rt
Shindengen Electric Mfg.Co.Ltd
W1002
CPU
or
GATE ARRAY
IN1
IN4
Stepper Motor Driver IC
■Outline Drawing
MTD2003G
(Unit : mm)
Shindengen Electric Mfg.Co.Ltd
W1002
Stepper Motor Driver IC
MTD2003G
!
Although we are constantly making every effort to improve the quality and reliability of our products, there nevertheless remains a certain
probability that the semiconductor products may occasionally fail or malfunction. Please take careful precautions against product failures or
malfunctions to avoid any injuries, fire accidents or social loss by implementing safety designs such as redundancy designs, designs for fi re
spread prevention, and designs for preventing malfunctions.
Our semiconductor products listed in this document are not designed or manufactured to be used in devices or systems requiring
extremely high levels of quality and reliability, or the failure or malfunction of which may directly threaten human lives or cause injury.
In the cases where the products are to be used in devices or systems for special applications or devices or systems for specialized
applications shown below, always make sure to consult us in advance.
Special Applications
Transportation devices (automotive, marine, etc.), communication devices for core network, traffic signal devices, fire prevention/anticrime
devices, various safety devices, medical devices, etc.
Specialized Applications
Nuclear power control systems, aircraft and aerospace devices, submarine relay devices, and systems for preserving life, etc.
Even if it is not for a special or specialized application, when IC products are to be used for devices or systems that are desired to last for
a long period under continuous operation, please make sure to consult our sales representative in advance.
!
● We reserve the right to make any changes to the contents of this manual without prior notice in accordance with modifications to IC products.
● Details of specifications should be exchanged at the adoption of the IC products.
● All information included in this manual is believed to be accurate and reliable. However, our company takes no responsibility for any injury or
damage incurred when using the IC products as described in this manual. Neither do we take any responsibility for issues arising from
infringement of patent or other rights caused by using this manual.
● The provision of this manual does not guarantee the right to use any third party's patent or other rights, or grant permission to use the patent
or other rights of our company.
● No part of this manual may be reproduced or copied without the specific written consent of Shindengen Electric Mfg. Co., Ltd.
Shindengen Electric Mfg.Co.Ltd
W1002
