LG LG-E730 - Vibrators (Q-Coin Motor)

3. TECHNICAL BRIEF
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Only for training and service purposes
LGE Internal Use Only
3.14 Vibrators (Q-Coin Motor)
The strength of vibration is determined by the duty cycle of PWM
U700 is Q-Coin motor driver amplifier IC.
G
G
G
G
G
Vibrator Circuit & Drive Amplifier circuit
G
FB701 75
Q700 C
B
E
GND
IN
OUT
327R
IND
007C
n01
IND
427R
R703 100K
+VPWR
75FB700
R700 100K
1u
C707
50
7
R
K74
U700
C3
C2
C1
B3
B2
B1
A3
A2
A1
SHDN
+IN
OUT-
GND1
GND2
VDD
BYP
-IN
OUT+
10
7
R
K
1
VREG_MOTOR_3.3V
MOTOR_N
MOTOR_P
V
IB_PWM
VIB_N
1%
Changed at REVC
1%