MTD2003 Просмотр технического описания (PDF) - Shindengen
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MTD2003 Datasheet PDF : 2 Pages
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Stepping Motor Driver ICs
● Equivalent Circuit・Basic Application Circuit
MTD2003
●Pin Assignment
●True Table
IN 1 or 4 IN 2 or 3
L
L
L
H
H
L
H
H
Out 1 or 4
OFF
L
H
OFF
Out 2 or 3
OFF
H
L
OFF
●True Table for Current Chopping Level
Io
I1
Current Level（％）
Vref（V）
（Vr=5V）
L
L
100
0.5±5％
H
L
70
0.35±8％
L
H
33
0.17±10％
H
H
0
●Setting of Output Current and Chopping Frequency
Fig.1 shows constant current chopping wave form.
○Output Current setting
Io(100%) =
Vr
10・Rs
-
0.015
○Chopping Frequency Setting
f=
1
0.72・Ct・Rt
●Recommended Parts Value
Symbol
Recommended Value
Unit
Rs
0.68
Ω
Rt
18
kΩ
Ct
3300
pF
Vr
Vcc
V
Fig.1 Constant current wave form (Motor current / phase)
●Recommended Operating Conditions （Ta=25℃）
Item
Symbol
min.
typ.
max.
Unit
Motor Supply Voltage
Vmm
27
V
Output Current
Io
1
A
Logic Supply Voltage
Vcc
4.75
5.25
V
Chopping Frequency
fchop
20
kHz
Operating Temperature
Top
-25
120
℃
Copyright & Copy;2000 Shindengen Electric Mfg.Co.Ltd
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