Power Management Ic (Adp3522, U301) - LG C3100 Service Manual

3. TECHNICAL BRIEF

3.7 Power Management IC (ADP3522, U301)

Block Diagram
ADP3522
PWRONKEY
31
ROWX
PWRONIN
SIMEN 1
28
TCXOEN
RESCAP 15
6
CHRDET
13
EOC
14
CHGEN
10
GATEIN
BATSNT 4
12
ISENSE
9
GATEDR
7
CHRIN
MVBAT 5
VSIM
VCORE
VRTC
VAN
VTCXO
VMEM
110kΩ
Q S
R
CHARGER
DEPECT
LI-ION
BATTERY
CHARGE
CONTROLLER
&
µPROCESSOR
CHARGE
INTERFACE
AGND
Figure 3-12. Block Diagram of ADP3522.
Table 3-7. LDOs of ADP3522.
1.8V (is provided to the AD6525 & AS6521's digitalcore)
2.0V (is provided to the RTC and Backup Battery)
2.55V (is provided to the AD6521 I/O and used as microphone bias)
VBAT
22
DEEP
DISCHARGED
UVLO
UVLO
OVER TEMP
SHUTDOWN
RESET
GENERATOR
Description
2.85V (is provided to SIM card)
2.75V (is provided to Flash)
2.8V (is proveded to Flash)
- 26 -
VRTCIN VBAT2 SIMSEL
2 19 8
SIM LDO
VSEL
VBAT
OUT
VREF
EN DGND
DIGITAL CORE LDO
VBAT
OUT
VREF
PG
EN DGND
ANALOG LDO
VBAT
VREF OUT
EN AGND
TCXO LDO
VBAT
VREF OUT
EN AGND
MEMORY LDO
VBAT
OUT
VREF
EN DGND
RTC LDO
VBAT
VREF
OUT
EN DGND
EN
REF
BUFFER
1.21V
VSIM
18
21 VCORE
VAN
23
16
RESET
25
VTCXO
20
VMEM
VRTC
3
26
REFOUT
AGND
27
DGND
11