M51660L Datasheet, PDF (4/4 Pages) Mitsubishi Electric Semiconductor – SERVO MOTOR CONTROL FOR RADIO CONTROL

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