Panasonic KX-TG3411BXH Service Manual page 13

4.5.3. 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
+5.5V
AC Adaptor
+3.0V
IC302
3.0V
REGULATOR
+5.5V
+3.0V
Reset (RSTN)
(IC501_62pin)
VDD3
IC501
+3.0V
VDD1
BBIC
+1.8V
Q301
VDD2
+2.4V
Q302
RF Part
13
KX-TG3411BX/KX-TG3412BX/KX-TG3419BX/KX-TGA341BX
VDD5
+3.0V_CP2
IC611
EEPROM