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Stepper Motor Driver IC
■Typical Application
MTD2006G
5V
Vcc
Out1 Out 2
Vmm A Vmm B
Out3 Out4
Vc
c
Alarm
Feed Back
ALARM
ALARM
CPU
or
GATE
ARRAY
Vc
c
Rt
Ct
ENA A
to Out3,4Logic
PHA A
DECAY
ENA B
DECAY
signal
PHA B
BLANK
QR
S
Current
‑ Sensor
+
Current
Sensor ‑
+
RQ
S
CR
LG
PG
TAB
Vref A Vs A Rs A
Rs B Vs B Vref B
Rs
Rs
CPU
or
GATE
ARRAY
Vcc
R1
R2
●Constant chopping current level
Ichop = Vref
Rs
●Chopping frequency
f=
1
0.75・Ct・Rt
Shindengen Electric Mfg.Co.Ltd
●Recommended component values
Rt 7.5〜30kΩ
Ct 2200〜4700pF
R1+R2≦10kΩ
W1002