12
KX-TG4111MEB/KX-TG4112MEB/KX-TGA410MEB
4.4.3.
Power Supply Circuit/Reset Circuit
The power supply voltage from AC adaptor is converted to VBAT (3.0V) in IC302. And +3.0V for peripherals and analog part is
insulated from VBAT by Doubler of BBIC.
Circuit Operation:
5.5V
VBAT
RSTN(Reset)
pin 54
VBAT
pin 10
pin 57
pin 9
pin 15
IC501
IC302
IC611
BBIC
DOUBLER OUT
For peripherals
VDDC (1.2V)
AC Adaptor
3.0V
REGULATOR
EEPROM
Receive
Amp.
+3.0V
STM/CKM
RF Part
Startmonitor
(IC501 57pin)
VDDC (1.2 V)
VBAT
Reset (RSTN)
(IC501_54 pin)
BBIC chip initialize
(CKM/STM)