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4-16
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4.8.
Power Supplies
Figure 4.11: Power Supply and Related Sub-System Block Diagram
J300
I/O CN
P300
Li-ION
Battery
780
mAH
Q301
EXT_PWR
VBUS
VACC
R321
BATT
TEMP
D302
D301
D303
U304
SM-
PWR
R313
VLBB1
VLBB2
SDBB
VINT
VSIM1
VRF3
VRF1
VRF2
V28
VSD
VUSB
VANA
U300
Com-
panion
IC
VLBB3
SENSEOUT
VRTC2
VRTC3
VMAIN
SDBB
BT300
R327
U100
SGOLD
VINT
VLBB2
VLBB1
SDBB
VANA
VSIM1
VRTC2
RTC
SENSEOUT
BATT_TEMP
U200
OMAP
VUSB
V28
VLBB3
SDBB
VBUS
SIM
VSIM1
SW
VSIM1
RF
DCDCOUT
Backlight
Main/Sub/
Photo
VBATT
VRF2
VRF1
U102
MEMORY
SDBB
Q401
U201
Bluetooth
VRF3
U203
MEMORY
SDBB
Mini-SD
VSD
Sub-LCD
V28
Main-LCD
V28
Camera
V28
IrDA
V28
DCDCOUT
Charging
CKT
VBATT
VAUDIO
PWR
KEY
RESET_N
I2C and Control I/F
Keypad, Alert, Charging LED
M
VIB
VIB
LED
SLED1/2
IP
C
and
Co
n
tr
o
l I
/F
AP
_
R
S
T
C
L
K
(13
M
H
z,
32kH
z)
F26M
R252
R251
4.8.1
Introduction
The power management block primarily consists of SM-PWR (U304) and Companion IC (U300). U304 is a highly integrated
power management ASIC with a complete on/off logic and charging control, regulators, LED drivers, 8-ohm speaker and
vibrator driver. The companion IC is an ASIC that complements U304 providing the additional functionality like back-up battery
charging, audio switching including stereo/mono headset, boost converter and additional regulators.
The Power Management Block consists of the following sections:
1. Power Source
2. Power Control Logic
3. System Power Supply
4. Battery Charging & Monitoring
5. Accessory Detection
4.8.2
Power Source
The main battery is a single Lithium-Ion 780mAH(Li-Ion) cell with 3.7v nominal voltage. The RTC back-up battery is a Lithium-
Ion 0.5mAH coin cell with 3.0v nominal voltage. The charger supported is a 5.6v±0.4v, 700mAH
PROVISIONAL ISSUE
Содержание EB-X700
Страница 74: ... 9 6 9 3 4 Battery Voltage AD Calibration 1 Click mode button and select Non signaling test PROVISIONAL ISSUE ...
Страница 91: ... 9 23 10 From the Modes pull down menu select EEPROM PROVISIONAL ISSUE ...
Страница 107: ...12 6 Mini SD SIM PCB 12 6 PROVISIONAL ISSUE ...
Страница 109: ...12 8 LCD PCB 12 8 PROVISIONAL ISSUE ...
Страница 110: ...13 LAYOUT DIAGRAMS 13 1 Main PCB Top View 13 1 1 2K PROVISIONAL ISSUE ...
Страница 111: ...13 2 Main PCB Bottom View 13 2 1 5K 10K 10K 10K 10K 10K 1 5K PROVISIONAL ISSUE ...
Страница 112: ...13 3 LCD PCB Bottom View 13 3 PROVISIONAL ISSUE ...