20
LT1425
1425fa LT/TP 1198 2K REV A • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 1997
TYPICAL APPLICATIO
N
U
12V to 5V Isolated Converter
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LT1105
Off-Line Switching Regulator
Built-In Isolated Regulation Without Optoisolator
LTC
®
1145/46
Isolated Digital Data Transceivers
Up to 200kbps Data Rate, UL Listed
LT1170/71/72
5A/3A/1.25A Flyback Regulators
Isolated Flyback Mode for Higher Currents
LT1372/77
500kHz/1MHz Boost/Flyback Regulators
Uses Ultrasmall Magnetics
LT1424
Application Specific Isolated Regulator
8-Pin Fixed Voltage Version of LT1425
+
+
+
220
µ
F
10V
1425 TA05
LT1425
MBRS340T3
2
5
1
4
6
3
10
7
11
8
12
9
GND
NC
R
FB
V
C
R
REF
SYNC
SGND
GND
GND
SHDN
R
OCOMP
R
CCOMP
V
IN
V
SW
PGND
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
3.01k
1%
25.5k
1%
9.3k
1%
MMFT1N10E
2.4k
12V
INPUT
COM
0.1
µ
F
22
µ
F
35V
220
µ
F
10V
200
Ω
5V
1A
OUT
COM
COILTRONICS
VP1-0190
TURNS RATIO 1 : 1 : 1 : 1 : 1 : 1
12
µ
H PER WINDING
407-241-7876
1000pF
1000pF
MUR120
Q1
2N3906
0.1
µ
F
100
Ω
10
Ω
1.8k
330pF
9
D1
1N755
7.5V
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear-tech.com
