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LT1425CS Datasheet(PDF) 18 Page - Linear Technology

Part # LT1425CS
Description  Isolated Flyback Switching Regulator
PDF  20 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1425CS Datasheet(HTML) 18 Page - Linear Technology

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18
LT1425
TYPICAL APPLICATIONS
±15V Isolated Power Supply
+
+
+
1425 TA04
LT1425
MBRS1100T3
MBRS1100T3
4
5
6
7
T1*
3
2
18
GND
NC
RFB
VC
RREF
SYNC
SGND
GND
GND
SHDN
ROCOMP
RCCOMP
PIN 3 TO 4, 7 TURNS BIFILAR 34AWG
*PHILIPS EFD-15-3F3 CORE
GAP FOR PRIMARY
L = 40
µH
0.12 INCH MARGIN TAPE
PIN 7 TO 8, 28 TURNS 40AWG
PIN 5 TO 6, 28 TURNS 40AWG
PIN 1 TO 2, 7 TURNS BIFILAR 34AWG
3 LAYERS 2 MIL
POLYESTER FILM
VIN
VSW
PGND
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
3.01k
1%
1N759
18.4k
0.1%
3k
15V
60mA
–15V
60mA
OUT
COM
7.32k
1%
75
Ω
5V TO
15V
INPUT
COM
0.1
µF
220pF
1
µF
22
µF
35V
15
µF
35V
3k
15
µF
35V
1000pF
0.1
µF
130
Ω
330pF
9
MBR0540LT1
+
+
+
1425 TA06
BAV21
BAV21
MUR120
LT1425
5k
18
Ω
MBR745
10
Ω
4
7
8
T1*
3
2
1
GND
NC
RFB
VC
RREF
SYNC
SGND
GND
GND
SHDN
ROCOMP
RCCOMP
VIN
VSW
PGND
GND
1
2
3
4
5
6
7
8
16
T1
6
5
15
14
13
12
11
10
3.16k
1%
Q2
2N3906
Q3
2N3904
Q1
IRF620
D1
7.5V
1N755
D2
7.5V
1N755
30.1k
1%
R2
18
Ω
R1
24k
50
Ω
1W
510
Ω
10k
2.4k
100k
INPUT
COM
–36V TO
–72V
3.3
µF
150pF
0.1
µF
0.1
µF
C1
27
µF
35V
150
µF
6.3V
150
µF
6.3V
5V
2A
OUT
COM
1000pF
470pF
9
PIN 3 TO 4, 15 TURNS BIFILAR 31AWG
*PHILIPS EFD-15-3F3 CORE
GAP FOR PRIMARY
L = 100
µH
PIN 7 TO 8, 6 TURNS QUADFILAR 29AWG
PIN 5 TO 6, 15 TURNS BIFILAR 33AWG
PIN 1 TO 2, 15 TURNS BIFILAR 31AWG
1 LAYER 2 MIL
POLYESTER FILM
2 LAYERS 2 MIL
POLYESTER FILM
– 48V to 5V Isolated Telecom Supply



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