Power Supply Circuit - Panasonic KX-TG9581B Service Manual

KX-TG9581B/KX-TG9582B/KX-TGA950B
4.2.2.

Power Supply Circuit

The power is supplied to the DECT-BBIC(Master),TAM-Flash,QSPI-Flash,BT-Module,EEPROM,
Expanded-I/O,BBIC(Slave),QSPI-Flash(forSlave),Expanded-I/O;
The brief block diagram is below.
AC-Adaptor
Main power supply
Jack D901
F900
Charge
Circuit
IC904
Battery F900 IC906
Battery power supply
VDD1 (M_+1.8V)
RESET(RST)
for IC601
(IC601_B8 pin)
IC601_C8 pin
VDD5 (S_+1.8V)
for IC701
RESET(RSTn)
IC701_71pin
DC-OUT(2.8V)
L901 D1001
Q903
IC901
VDD6(3.4V)
VBAT(2.6V)
1.8V
Q606
3.0V
3.4V
IC905 Q607
VDD7(4.0V)
4.0V
Q911
LCD Back Light
VDD2(3.0V)
VDD5(1.8V)
1.8V
Q701
<Fig.101>
<Fig.102>
10
IC601
(BBIC-Master)
IC602
TAM_Flash
Photocoupler
IC603
QSPI_Flash
VDD1(1.8V)
Prog
IC402 IC402
IC403 IC403
IC404 IC404
IC405 IC405
IC501
BT_Module
IC604
EEPROM
IC101
KEY
Expended-I/O
Isolated circuit
IC102, IC103
LED
Expended-I/O
LCD-Module
IC701
(BBIC-Slave)
IC703
QSPI_Flash
Prog
IC201
OP_AMP
CN401
VBUS +5.0V
IC401
USB JACK
USB IC