Samsung SGH-2400, Service Manual, Page: 40 / 41

5-16 Schematic Diagrams
5-16 Power Supply Units
0805 0805
0805
0805
0805
NICHICON-G
0603
7125
0805
0805
0603
0805
0805
0805
POWER_ON_D
U806
MIC5205-3.0BM5
ADJ
4
3
EN
GND
2
IN
1
OUT
5
1uF C831
+3V8
AVCC
10uF,6.3V C832
+3VLNAGSM
C828 10nF
1
OUT
5 MIC5205-3.0BM5
U805
ADJ
4
3
EN
2
GND
1
IN
5
OUT
+3V8
POWER_ON_D
U810
MIC5205-3.0BM5
ADJ
4
3
EN
GND
2
IN
1uF C830
POWER_ON
+3VBB
C845 10uF,6.3V
+3VPLL
C874 100nF
C850 10nF
+3VLNAGSM
1uF C872
+VBATT
C860
10uF,6.3V
+3V_RTC
P
+3VMD
C861 10uF,6.3V
C854 10nF 10nF C852
10uF,6.3V
C827
MIC5205-3.0BM5
U811
4
ADJ
EN
3
2
GND
1
IN
5
OUT
C819 470pF
+3VDC
C873 220uF,6.3V
MS414
R812 100K
250uAH C863
P
+3VLO1
10uF,6.3V
C806
GND
1
IN
5
OUT
C870 10nF
RF_ON_OFF
MIC5205-3.0BM5
U801
ADJ
4
3
EN
2
+3VBB
POWER_ON_D
100nF C869
STARTUP_VOLTS
+3V8
10nF C859
+3VBB
100nF C853
R995 1K
C800 1uF
+3VDEMOD
+3VPLL
1K R811
C805 10uF,6.3V
+3VDC
200 R805
IN
1
OUT
5
C862 470pF
+VBATT
U803
MIC5205-3.0BM5
ADJ
4
3
EN
GND
2
P
+3VTX
C867 470pF
10uF,6.3V
C816
POWER_ON
+3VLO2
L800 BDS-4020R-220M
220uF,6.3V C871
+3VLO1
+3VLNADCS
C851 100nF
+VBATT
C801 10nF
UPS5817
D808
+3V8
7
BATT
CLSEL
4
FB
1
8
GND
LBI
29
LX
10
OUT
REF
5
_LBO
3
6
_SHDN
P
+3VTX
+3VX
STARPOINT
JP300
IN
1
2
OUT
U812
C826
10uF,6.3V
+3VX
+3VDEMOD
+3VLNADCS
10uF,6.3V
C817
P
AVCC
D801 MCL4154
RF_ON_OFF
+3V8
+3V8
C855 100nF
C810
U804
ADJ
4
3
EN
2
GND
1
IN
5
OUT
+3VMD
470pF
U809
MAX809EUR-T
GND
1
RESET
2
VCC
3
TC1015-3.3
1
2
3 4
6
RF_ON_OFF
+3VLO2
RF_ON_OFF
10uF,6.3V
+3V8
U813
UMC5N
C868
+3V_RTC
POWER_ON +VBATT
_RESET
+3VPLL +3VLO2 +3VLO1 +3VMD +3VDEMOD +3VDC RF_ON_OFF
STARTUP_VOLTS
+3VTX AVCC +3VBB +3VX +3VLNADCS +3VLNAGSM