Read Panasonic KX-TGF310RUM / KX-TGF320RUM / KX-TGF320UCM / KX-TGFA30RUM Service Manual online
13
KX-TGF310RUM/KX-TGF320RUM/KX-TGF320UCM/KX-TGFA30RUM
4.5.4.
Power Supply Circuit/Reset Circuit
There are 2 pattern from power supply voltage.
1) AC adapter voltage is converted to VBAT(3.0V) at DCDC converter.
2) Battery voltage goes through to VBAT(Battery voltage).
VBAT is used for various voltage of the system.
Circuit Operation:
1) AC adapter voltage is converted to VBAT(3.0V) at DCDC converter.
2) Battery voltage goes through to VBAT(Battery voltage).
VBAT is used for various voltage of the system.
Circuit Operation:
Startmonitor
(IC501 57pin)
VDD1 (1.8 V)
VBAT
Reset (RSTN)
(IC501_77pin)
(IC501_77pin)
BBIC chip initialize
(CKM/STM)
AC adapter
+5.5V
Battery
Charge
Control
Control
Circuit
DCDC
converter
IC302
VDD3
VBAT
Q301
VDD1
+1.8V
QSPI FLASH
IC502
TAM FLASH
IC601(KX-TGF320 only)
RF Part
DCDC
converter
VDD6
4.0V
LCD module
VDD4
3.0V_CP1
LEDs
BBIC
IC501
3.0V_CP2
VDD5
Sub IC
IC421
LCD bac
k
light
Click on the first or last page to see other KX-TGF310RUM / KX-TGF320RUM / KX-TGF320UCM / KX-TGFA30RUM service manuals if exist.