10.
Circuit Diagrams and PWB Layouts
LDO Regulator
19190_523_110909.eps
110909
LDO Regulator
B21
B21
2011-09-01
2
715G5151
LDO Regulator
5VSB
C753
4.7UF 10V
C761
NC/10U 16V
U705
3
2
1
4
VIN
VOUT
GN
D
4
Vout=Fixed 3.3V
STBY Power : 3V3SB
C756
NC/1UF 10V
G903T63UF
5V_USB2 (5V_MEMC) Power
C765
10U 16V
3V3SB
5V_SW
C757
NC/10U 16V
Demod_3V3 = 85mA.
FB727
120R/3000mA
1
2
C760
NC/10U 16V
Vout = 3.3V
Vout=Fixed 1.2V
V1.2
C766
10U 16V
5V_SW
FB734
NC/120R/3000mA
1
2
GND
4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23
U707
3
2
1
4
VIN
VOUT
GN
D
4
Demod_1V2 = 210mA
R749
2K 1%
FB733
NC/120R/3000mA
1
2
C763
NC/100N 16V
R754
NC/15 OHM +-5% 1/4W
FB728
120R/3000mA
1
2
+12V
R747
1K 1/16W 5%
R748
10K +-1% 1/16W
C759
NC/1UF 10V
FB729
120R/3000mA
1
2
Demod 3V3 Power : V3.3
FB730
120R/3000mA
1
2
NC/G9084-50TU3U
TO-263T
C755
10N 50V
V3.3
L705
2.2uH
V3.3
U706
SC189ASKTRT
4
1
3
5
2
VOUT
VIN
EN
LX
GN
D
U709
3
2
1
VIN
VOUT
AD
J
/GN
D
LDO_USB2
t
TH1003
NC/PTCR
1
2
Demod 1V2 Power : V1.2
NC/G912T63U
AVDD1V2
U708
3
2
1
4
VI
VO
GN
D
4
C754
10N 50V
C750
1UF 10V
C751
10U 16V
Analog Power : AVDD1V2
5V_MEMC
FB732
NC/120R/3000mA
1
2
C752
10U 16V
C758
NC/10U 16V
NC/G903T63UF
FB731
NC/120R/3000mA
1
2