Datasheet

20
LT1533
1533f LT/TP 0598 5K • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 1997
TYPICAL APPLICATION
U
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PART NUMBER DESCRIPTION COMMENTS
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10W Off-Line Power Supply Passes FCC Emission Requirements
Without Filter Components
R
CSL
R
VSL
LT1533
FB COL A COL B
D
S
D
S
1V
Q5
IRF840
Q6
IRF840
1N5818 1N5818
C
T
3.9k
SHDN
V
IN
V
C
R
T
PGND
43k
3300pF
L2
22nH
4V 0.48V
1µF
8.2k
4V
12V
470k
75k
0.8Ω
BAT-85
22k
HV
12V
12V
10M
1k
360k
10k
12V
12V
12V
15k
0.002µF
+
1µF
+
220µF
+
15µF
1µF
+
10µF
+
4.7µF
1N759A
12V
+
330Ω
240k
2.5V
R
TOP
COLLT1431
FGND
1533 TA08
REF
SGND
R
MID
0.15µF
–
+
C1
1/2 LM393
–
+
C2
1/2 LM393
POWER LIMIT CURRENT LIMIT
3k
L1 = COILTRONICS UP-4
L2 = COILCRAFT B07T
NPN = 2N3904 UNLESS OTHERWISE NOTED
PNP = 2N3906
T1 = COILTRONICS CTX02-13978-X3
1V
510Ω
0.48V
470Ω
Q1
MPSA42
Q2
5k
0.5W
100k
HV
+
1k
Q3
Q4
1k
360k
T1
10k
470Ω
4N28
12V
0.002µF
HV
1.6k
1W
1.6k
1W
0.001µF
250V
0.001µF
250V
L1
10µH
5V
2A
Q7
Q8
HV
0.1µF
AC LINE
1N4005
100µF
400V
+
= 20CJQ045(I.R.) UNLESS OTHERWISE NOTED
= 1N4148
= AC (HOT) RETURN
= OUTPUT COMMON
DANGER!!
HIGH VOLTAGE!!
SCREENED AREA CONTAINS LETHAL HIGH VOLTAGES!
USE CAUTION IN CONSTRUCTION AND TESTING!
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
●
www.linear-tech.com