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KX-TG6621RU/KX-TG6621UA/KX-TG6621CA/KX-TG6622CA/KX-TGA661RU
4.2.2.
Power Supply Circuit
The power is supplied to the DECT BBIC, QSPI FLASH MEMORY, FLASH MEMORY, EEPROM and Charge Contact from AC
Adaptor (+5.5 V) as shown in Fig.101. The power supply is as follows;
Adaptor (+5.5 V) as shown in Fig.101. The power supply is as follows;
• DECT BBIC (IC7):
DC Jack (+5.5 V)
→ IC2 → IC7
DC Jack (+5.5 V)
→ IC2 → Q9 → IC7
DC Jack (+5.5 V)
→ IC2 → Q8 → IC7
• EEPROM (IC401):
DC Jack (+5.5 V)
→ IC2 → IC7→ IC401
• FLASH MEMORY (IC421):
DC Jack (+5.5 V)
→ IC2→ IC7→ IC421
• Charge Contact (TP16):
DC Jack (+5.5 V)
→ R56 → R55 → D22→ TP16
• QSPI FLASH MEMORY:
DC Jack (+5.5 V)
→ IC2 → IC7 → IC431
<Fig.101>
AC Adaptor
DCP
IC2
Q9
IC7
IC431
IC421
IC401
+5.5 V
1.8 V
3.0 V
3.0 V
Q8
2.4 V
TP16
D22
R55
R56
DC
Jack
2.85 V
DCM
1
2
3
On
DC
S
1.8 V
Reset
(IC7_77pin)
Off
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