LG GW620 - Listening to the radio

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Only for training and service purposes
LGE Internal Use Only
3. Technical Brief
The strength of vibration is determined by the duty cycle of PWM (LIN_PWM)
U11 : SM100 is Linear motor driver IC.
3.19 Vibrators
Figure. Linear Moter Drive IC Schematic
U302
MSM7200
U302
MSM7200
Main Board
GPIO 28 : LIN_MOT_PWM
GPIO 57 : LIN_MOTOR_EN
U252
Linear motor
Circuitry
U252
Linear motor
Circuitry
Linear
motor
LCD_FPCB
Figure. Vibrator Block Diagram
VREG_MOTOR_3.0V
88R
smhoK01
C348
0.0039uF
SM100U11
9
54
63
72
81
EN V1
SIN VSS
TYPE VCC
OCT V2
DN
GP
smh
oK
042
111R
C24
1UF
100nL18
100nL42
LIN_MOTOR_EN
LIN_MOT_PWM
MOTOR+
MOTOR-