LG LG-P350 - Vibrators (Q-Coin Motor)

3. TECHNICAL BRIEF
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Copyright © 2011 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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3.15 Vibrators (Q-Coin Motor)
The strength of vibration is determined by the duty cycle of PWM (LIN_PWM_FREQ)
U601 : EUSY0404001 is Q-Coin motor driver IC.
Figure. Q-Coin Moter IC Schematic
Figure. Vibrator Block Diagram
R623
1K
C634
0.1u
Q601
C
B
E
100KR627
R613
100K
U601
B2C1
A1B1
B3C2
A3C3
IN- VDD
IN+ VO+
_SHUTDOWN VO-
BYPASS GND
VREG_MOTOR_3.3V
C633
0.1u
VREG_MOTOR_3.3V
R622
4.7K
51K
R624
R626
1K
C635 10n
51K
R625
LIN_PWM_FREQ
MOTOR_
N
MOTOR_P
1%
1%
1%
1%
1%
1%