3. TROUBLE SHOOTING
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3.3 Checking DC-DC Block
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U1300
TP1 (+VPA0)
+1V8_VREG_S3A
1.5u
L1301
0.1u
C1336
+VPA0
C1326
10
u
C1338
1n
10u
C1337
U1300
LM3263
B1
D3
C1
C3
C2
B2
A4
C4
A2
D2
D4
D1
A3
B3
A1
B4
PACB
PVIN1
BGND
PGND
SCLK
SVDD
GPO1
SW
1
ACB2
ACB1
SW
2
SDATA
FB
VIO
SGND
PVIN2
VREG_BOOST_BYPASS
RFFE1_CLK
RFFE1_DATA
REV10
TP1 (+VPA0)