SMT FLYBACK TRANSFORMERS
For National’s 100kHz Simple Switcher
™
Designed for use with National’s device
numbers LM2585/86 and LM2587/88
Performance verified by National Semiconductor
Electrical Specifications @ 25°C — Operating Temperature -40°C to 130°C
Part
Number
L
P
(µH NOM)
I
IN
peak
V
IN
(V
DC
)
4-6
4-6
8-16
4-6
18-36
18-36
18-36
18-36
V
OUT
1
(V
DC
)
3.3
5
12
12
5
12
12
5
V
OUT
2 V
OUT
3
(V
DC
) (V
DC
)
—
—
—
-12
12
-12
-12
12
—
—
—
—
-12
—
—
-12
I
OUT
1
1.8
1.4
1.2
0.3
1.8
0.63
1
2.5
I
OUT
2
—
—
—
0.3
0.25
0.63
1
0.5
I
OUT
3
—
—
—
—
0.25
—
—
0.5
Turns
Ratio
DCR
Primary
(
Ω
MAX)
0.04
0.04
0.03
0.055
0.12
0.14
DCR
DCR
Sec 1
Sec 2
(
Ω
MAX) (
Ω
MAX)
0.04
0.5
0.04
0.25
0.22
0.025
—
0.5
0.80
0.25
0.22
0.25
DCR
Sec 3
(
Ω
MAX)
—
—
0.80
—
—
0.25
PE-68411
PE-68412
PE-68413
PE-68414
PE-68421
PE-68422
22
22
66
65
85
85
4.85
5.00
2.99
2.98
4.90
4.92
1:1
1:2.5:2.5
1:0.5:1.15:1.15
1:1.2:1.2
1:0.8:0.8
1:0.35:0.8:0.8
NOTE:
Simple Switcher™ is a trademark of National Semiconductor Corporation.
Mechanicals
PE-68411
PE-68412
PE-68413
PE-68414
PE-68421
PE-68422
PE-684XX
PAT PEND
DATE CODE
COUNTRY OF ORIGIN
.200 .010
8X 5,08 ± 0,25
10
.970
24,64MAX
.800
20,32
6
Schematics
PE-68411
1
16
DATE CODE
COUNTRY OF ORIGIN
PE-68412
8
SEC 1
9
7
1
16
SEC 1
10
8
SEC 2
9
1.070 MAX
27,18
.900 ± .010
22,86 0,25
.470 MAX
11,94
1
5
1
16
2
.700 MAX
17,78
PE-68413
PE-68414
8
SEC 1
9
16
7
SEC 2
10
6
SEC 3
11
1
8
9
7
SEC 1
.005/0,13
16 SURFACES
1.040 MAX
26,42
8
.900 ± .010
22,86 0,25
9
.060
1,52
SEC 2
10
15
14X .100
2,54
.920
23,37 MAX
.700
17,78
16
.680
17,27
1
10X .095
2,41
.800
20,32
PE-68421
4
SEC 1
7
5
SEC 2
6
1
10
2
9
PE-68422
3
SEC 1
8
4
SEC 2
7
5
10
2
9
1
.900
22,86
.200
5,08
R
.700
17,78
R
SEC 3
.900
22,86
.055
1,40
6
16X .070
1,78
16X .100
2,54
.185
4,70
.110
2,79
Dimensions:
Inches
mm
Unless otherwise specified, all tolerances are ± .010
0,25
For More Information :
UNITED STATES
(Worldwide)
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U.S.A.
http://www.pulseeng.com
TEL: 858 674 8100
FAX: 858 674 8262
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SINGAPORE
(Southern Asia)
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#07-01/02
KA Centre
Singapore 368324
TEL: 65 6287 8998
FAX: 65 6280 0080
TAIWAN, R.O.C.
(Northern Asia)
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Hsi-Chih, Taipei Hsien
Taiwan, R.O.C.
Tel: 886 2 2698 0228
FAX: 886 2 2698 0948
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(China/Hong Kong)
9/F, Phase 2, Tai Sang
Shatin Warehouse Centre
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Fotan, Shatin, Hong Kong
TEL: 852 2788 6588
FAX: 852 2776 1055
DISTRIBUTOR
Performance warranty of products offered on this data sheet is limited to the parameters specified. Data is subject to change without notice. Other brand and product
names mentioned herein may be trademarks or registered trademarks of their respective owners.
Printed on recycled paper. ©2003, Pulse Engineering, Inc.
P598.A (5/03)
TI Technology Forum
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