PC-UM10M
SL-5500 HARDWARE DESCRIPTION
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4. POWER SUPPLY COMPOSITION
During set ON
5VDC/DC=ON (5V output)
SW3 = ON
SW4 = OFF
During set OFF (Main battery voltage >3.3V)
5V DC/DC=ON (3.8V output)
SW3 = OFF
SW4 = ON
POWER BLOCK DIAGRAM
SW1:
Off when the backup battery voltage falls below 2V. (Dis-
charging is inhibited. Charging is allowed.)
SW2:
Off when VAB falls below 3V.
Adapter
5 V
DC - DC
3.3 V
DC - DC
3.3 V
DC - DC
VDT
3.0 V
Reg.
3.1 V
VDT
3.3 V
VDT
B/U Batt.
MAIN Batt.
2.0 V
1.8 V
DC - DC
SW 4
SW 3
SW 2
SW 1
VCC-Core
VCC 5
VCC 3
AC_Adaptor
Battery
950mAh (Discharge max = 2.3A)
Fatal = 3.6V (about)
5V
DC-DC
Step_up
3.3V
DC-DC
Step_Down
1.8V
DC-DC
Step_Down
CPU
SDRAM
Mask_ROM
Flash_ROM
Inverter
300mA
Regurater
(TK11133)
Regurater
(TK11133)
IR_Unit
TC35143AF
DAC(PCM1741)
AMP(NJM2172)
Regurater
(TK11133)
Regurater
(TK11133)
FET SW
DC-
DC
LCD
3V
5V
±15V
3.3V
Regurater
(TK11133CS)
SD CARD
CF CARD Plus
3.3V or 5V
FET SW