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

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.
LIN_PWM_FREQ
LGE Internal Use Only
VREG_MOTOR_3.3V
1%
R622 R623 R624
1K
4.7K
1%
51K
R625
C
1%
51K
Q601
B
1%
R626
E
1K
C633
0.1u
Figure. Q-Coin Moter IC Schematic
Figure. Vibrator Block Diagram
VREG_MOTOR_3.3V
R613
1%
100K
U601
BYPASS GND
C1 B2
_SHUTDOWN VO-
B1 A1
IN+ VO+
C2 B3
IN- VDD
C3 A3
1%
R627 100K
C635 10n
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3. TECHNICAL BRIEF
MOTOR_P
MOTOR_N
C634
0.1u
Only for training and service purposes