3. TECHNICAL BRIEF
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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
100K
R627
R613
100K
U601
B2
C1
A1
B1
B3
C2
A3
C3
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%