Panasonic KX-TGF343B - Power Supply Circuit;Reset Circuit

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KX-TGF340/KX-TGF342/KX-TGF343/KX-TGF344/KX-TGF345/KX-TGF372/KX-TGF373/KX-TGF374/KX-TGF375/KX-TG585/KX-TGFA30
4.6.5. 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
+5.5V +3.0V
+3.0V
+1.8V
+3.0V_CP
IC501
IC302
IC502
BBIC
AC Adaptor
3.0V
REGULATOR
QSPI FLASH
VDD3
VDD1
VDD4
+3.0V_CP2
IC601
TAM FLASH
VDD5
LCD
RF Part
LEDs
Q301
Bluetooth
unit
+2.4V
VDD2
Q302
IC721
Q661 LCD BLT
LCD_BLT (pin59_IC501)
Startmonitor
(IC501 57pin)
VDDC (1.2 V)
VBAT
Reset (RSTN)
(IC501_77pin)
BBIC chip initialize
(CKM/STM)