LT1764-1.5 Linear Technology, LT1764-1.5 Datasheet - Page 14

• Manufacturer Part Number: LT1764-1.5
• Description: 3A/ Fast Transient Response/ Low Noise/LDO Regulators
• Manufacturer: Linear Technology

LT1764 Series
14
TYPICAL APPLICATIO S
TO 140V AC
90V AC
ALL “V
POINTS
V
IN
TO
+
> 2.7V
”
L1: COILTRONICS CTX500-2-52
L2: STANCOR P-8560
*1% FILM RESISTOR
“SYNC”
L2
+
1N4002
1N4002
+
10V AC
AT 115V
10V AC
AT 115V
22 F
C1
10 F
SCR Preregulator Provides Efficiency Over Line Variations
U
IN
IN
ADJUST R1 FOR 0A TO 3A
NTE5437
NTE5437
2.4k
750
1N4002
CONSTANT CURRENT
LT1004-1.2
1N4148
R3
2k
1k
40.2k
Adjustable Current Source
0.033 F
R1
R2
1k
–
+
1/2 LT1018
C1A
500 H
V
L1
0.01
+
750
R5
R4
2.2k
C2
3.3 F
+
1/2 LT1018
R6
2.2k
10000 F
C1B
1N4148
+
–
2
3
–
+
1/2 LT1366
V
IN
SHDN
V
+
+
LT1764-1.8
34k*
12.1k*
200k
10k
1N4148
1 F
GND
C3
8
4
1764 TA04
IN
SHDN
OUT
0.1 F
LT1764-3.3
FB
GND
1
1 F
OUT
FB
LT1006
R7
470
V
+
A1
R8
100k
+
–
+
22 F
10k
LOAD
V
3.3V
3A
OUT
1764 TA03
10k
LT1004
1.2V
V
+
1764fa