SERVO MOTOR CONTROL FOR RADIO CONTROL
M51660L
MITSUBISHI <CONTROL / DRIVER IC>
TECHNICAL APPLICATION NOTES
PIN DESCRIPTION
1.
Servo Position Voltage Input Pin (Pin
Connect the potentiometer terminal for position detection that
follows the output axis. Compare this voltage with the voltage
of the triangular wave of pin
of approximately 0.1
μ
F should be connected for noise
prevention.
2.
Timing Capacitor Pin (Pin
Connect a capacitor that will generate a triangular wave by
constant current charging. A typical value is 0.1
μ
F. Also
connect a feedback resistor from the output here.
3.
Timing Resistor (Pin
)
Connect a resistor that will determine the value of the constant
current of pin
. A resistor of 18k
will yield a current of
1.0mA. A capacitor of approximately 0.03
μ
F should be
connected in parallel with the resistor to increase stability.
4.
External PNP Transistor Drive
Connect to the base of the external PNP transistor.
5.
Input Pin (Pin
)
Operate with a positive pulse of peak value 3V or greater.
6.
Output
Pin (Pin
)
Connect a feedback resistor between this pin and pin
7.
Ground (pins
and
)
8.
Error Pulse Output pin (Pin
Connect a resistor between this pin and pin
will change according to the value of this resistor.
9.
Output
pin (Pin
)
This is the output
pin.
10. Stretcher Input Pin (Pin
)
Connect the capacitor and resistor of the pulse stretcher
section.
11. External PNP Transistor Drive
Connect to the base of the external PNP transistor.
12. Regulated Voltage Output Pin (Pin
This is the output of the internal regulated supply voltage.
Make connections from this pin to a potentiometer or pulse
stretcher resistor. Connect a capacitor of approximately 2.2
μ
F
for stability.
13. Supply Voltage (Pin
)
The supply voltage exhibits uniform characteristics from 3.5V
to 7V. Connect a capacitor of approximately 10
μ
F.
)
and drive the motor. A capacitor
)
(Pin
)
.
)
. The dead band
(Pin
)
)
1
2
3
4
5
6
7
8
9
11
12
13
14
11
2
2
2
10
1
1
2
2
2