Only For Training And Service Purposes - LG KC780 Service Manual

0.01u
C122
R109 1
VRF2_1V5
VSD2_1V8
VSD1_1V5
C128
0.1u
VBAT
BAT_ID
RF_TEMP
TP105
3.4.2. Charging
SM-POWER provides together with an external p-channel FET Siliconix NDC652P an external
AC-adapter a complete charge control function for charging of Li-Ion or Li-Ion-Polymer batteries. Either a
1-cell Li-Ion or Li-Ion-Polymer battery with 4.1, 4.2 or 4.4 Volts may be used.
4.2V~3.76V
1. Charging method : CC-CV
2. Charger detect voltage : 4.0V
3. Charging time : 3h
4. Charging current : 450mA
5. CV voltage : 4.2V
6. Cutoff current : 100mA
7. Full charge indication current (icon stop current) : 100mA
8. Recharge voltage : 4.15V
9. Low battery alarm
a. Idle : 3.58V~3.48V
Copyright © 2008 LG Electronics. Inc. All right reserved.

Only for training and service purposes

VRF3_2V85 VRF3_2V85 VRF3_2V85
VRF3_2V85
47nH 47nH
L101 L102
C112
C111
C115
C113 C114
12p
100p
0.01u
0.1u 0.01u
C129
0.1u
H3
M0
J3
M1
G4
M2
H4
M7
G3
M8
J4
M9
Figure 5 S-GOLDradio PMU circuit diagram
3.75V~3.68V 3.65V~3.55V
Figure 6 Battery Block Indication
VRF3_2V85
VRF3_2V85
VAUDIO_2V5
VRF1_2V85
VAUX_2V9
VVIB_2V8
C101
C103
2.2u
1u
C116 C117
0.01u 0.01u C108
2.2u
C119
2.2u
TP102
3.51V~3.41V
- 35 -
3. TECHNICAL BRIEF
VUSB_3V1
VBAT VRF2_1V5
C102
VPLL_1V5
1u
C110
C118
1u
1u
VMMC
VIO_2V62 VRF1_2V85
VRF3_2V85 VBAT VSIM_2V8
C123
C121 C124
1u C125
1u
220n
2.2u
LGE Internal Use Only
C126
1u