Datasheet

15
LT1764 Series
1764fb
TYPICAL APPLICATIO S
U
–
+
A1
LT1006
–
+
C1B
1/2 LT1018
–
+
C1A
1/2 LT1018
LT1004
1.2V
1764 TA03
1µF
1N4148
1N4148
10k
10k
750Ω
750Ω
2.4k
22µF
1N4002
TO
ALL “V
+
”
POINTS
200k
34k*
12.1k*
0.1µF
V
+
V
+
V
+
V
+
10k
V
+
0.033µF
+
10000µF
+
22µF
V
OUT
3.3V
3A
+
1N4002 1N4002
1k
10V AC
AT 115V
IN
1N4148
L1
500µH
90V AC
TO 140V AC
10V AC
AT 115V
IN
LT1764-3.3
GND
IN
SHDN
OUT
FB
L1: COILTRONICS CTX500-2-52
L2: STANCOR P-8560
*1% FILM RESISTOR
NTE5437
L2
NTE5437
“SYNC”
SCR Preregulator Provides Efficiency Over Line Variations