Panasonic EB-X700 Service Manual page 29

4.8.4. System Power Supply
The following is the summary of the power supplies provided by SM-PWR (U304).
Power Supply
SDBB
VLBB1
VLBB2
VINT
VANA
VSIM1
VSIM1_SW
V28
VSD
VUSB
VRF1
VRF2
VRF3
The following is the summary of the power supplies provided by Companion IC (U300).
Power Supply
VLBB3
DCDCOUT
VAUDIO
VRTC3
VRTC2
PROVISIONAL ISSUE
Description
Memory core and I/O Supply
(U102, U203)
U100 DSP core supply
U100 ARM core supply
U100 I/O and peripheral supply
U100 Analog circuit supply
U100 SIM I/O and SIM card supply
Switched SIM card supply (On/off
control by U100)
U200 I/O and peripheral supply
(Main/Sub LCD, Camera, IrDA)
Mini-SD power supply
(serially set to 2.85v after powerup)
U200 USB I/F supply
RF regulated supply
(serially enabled after power-up)
Y500 (26MHz) VCXO supply
U201 Bluetooth supply
(serially enabled after power-up)
Description
U200 ARM core supply
13 V Boost Converter for driving
Main/Sub backlight LED and
Camera Photo-light
U300 Audio circuit supply
Back-up battery charging supply
U100 RTC supply
Input Supply
VMAIN
SDBB
SDBB
VMAIN
VMAIN
VMAIN
VSIM1
VMAIN
VMAIN
VMAIN
VMAIN
VMAIN
VMAIN
Input Supply
SDBB
VMAIN
VMAIN
VMAIN
VRTC3
– 4-18 –
Rating
1.80 V ± 0.12 V, 850 mA
1.50 V ± 0.09 V, 170 mA
1.50 V ± 0.09 V, 300 mA
2.72 V ± 0.10 V, 135 mA
2.65 V ± 0.09 V, 220 mA
2.85 V ± 0.10 V or
1.80 V ± 0.09 V, 22 mA
2.85 V ± 0.09 V, 200 mA
2.85 V ± 0.10 V, 135 mA
3.10 V ± 0.10 V, 45 mA
2.70 V ± 0.10 V, 260 mA
2.70 V ± 0.10 V, 10 mA
2.7 V ± 10 V, 150 mA
Rating
1.50 V ± 0.09 V, 300 mA
13.00 V ± 0.09 V, 170 mA
2.70 V ± 0.08 V, 100 mA
3.00 V ± .09 V, 10 mA
2.10 V ± 0.06 V, 2 mA