MTD1110 Datasheet, PDF (2/2 Pages) Shindengen Electric Mfg.Co.Ltd – Stepping Motor Driver ICs

Stepping Motor Driver ICs
● Equivalent Circuit・Basic Application Circuit
MTD1110
●Pin Assignment
●True Table
ENA
IN A or B
L
L
L
L
L
H
L
H
H
×
IN A or B
L
H
L
H
×
× : don't care
Out A or B
OFF
OFF
ON
OFF
OFF
Out A or B
OFF
ON
OFF
OFF
OFF
●Setting of Output Current and Fixed Off Time
Fig.1 shows constant current chopping wave form.
○Output Current setting
Io =
R2
R1+R2
・
Vcc
Rs
○Fixed Off Time Setting
Toff=0.69・Ct・Rt
●Recommended Parts Value
Symbol Recommended Value
Unit
Rs
0.68
Ω
RF
1
kΩ
CF
3300
pF
Rt
8.2
kΩ
Ct
3300
pF
Vz
Vmm×1.2～1.5
V
R1+R2
<10
kΩ
Fig.1 Constant current wave form (Motor current)
●Recommended Operating Conditions （Ta=25℃）
Item
Symbol
min.
typ.
max.
Unit
Motor Supply Voltage
Vmm
32
V
Output Voltage
Output Current
Output Emitter Voltage
Logic Supply Voltage
Chopping Frequency
VOUT
70
V
IO
1.5
A
VE
1.0
V
VCC
4.75
5.25
V
fchop
20
27
kHz
Operating Temperature
Top
-25
120
℃
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