vin > 4.75v vout = 3.45v
vin > 4.75v vout = 3.3v
R2
232 ohm, 1%
R1
133 ohm, 1%
+
C2
10uf tant.
+
C1
10uf tant.
U1 SC1202
1
2
3
ADJ
OUTIN
TAB
U1 sc1202-3.3
1
2
3
地
OUTIN
TAB
+
C2
10uf tant.
+
C1
10uf tant.
2RI
1R
2R
1VV
ADJREFOUT
•+
+•=