Panasonic KX-TG7622B - Base Unit Controls

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KX-TG7622B/KX-TG7623B/KX-TGA410B
4.6.6. 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
IC611
EEPROM
VDD5
RF Part
LEDs
Q301
Bluetooth
unit
+2.4V
VDD2
Q302
+4.0V
IC381
IC751
IC721
Startmonitor
(IC501 57pin)
VDDC (1.2 V)
VBAT
Reset (RSTN)
(IC501_54 pin)
BBIC chip initialize
(CKM/STM)