MTD2005 查看數據表（PDF） - Shindengen
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MTD2005 Datasheet PDF : 2 Pages
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Stepping Motor Driver ICs
● Equivalent Circuit・Basic Application Circuit
MTD2005F
●Pin Assignment
●True Table
ENA A or B ENA A or B Out 1 or 4
L
L
L
L
H
H
H
×
OFF
× : don't care
Out 2 or 3
H
L
OFF
●True Table for Current Decay
DECAY
Current Decay Mode
L
FAST (Sink+Source Chopping)
H
SLOW (Source Chopping)
●Setting of Output Current and Chopping Frequency
Fig.1 shows constant current chopping wave form.
○Output Current setting
Io =
R2
R1+R2
・
Vcc
Rs
○Chopping Frequency Setting
f
=
1
0.72・Ct・Rt
●Recommended Parts Value
Symbol
Recommended Value
Unit
Rs
0.68
Ω
Rt
13
kΩ
Ct
4700
pF
R1+R2
<10
kΩ
Fig.1 Constant current wave form (Motor current / phase)
●Recommended Operating Conditions （Ta=25℃）
Item
Symbol
min.
typ.
max.
Unit
Motor Supply Voltage
Vmm
50
V
Output Current
Io
0.8
A
Output Emitter Voltage
VE
1
V
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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