Document 293 -1
CCFL Transformers
FL3209 parts have been improved.
The new FL3209-5L and FL3209-6L are electrically
equivalent to the FL3209-1L, FL3209-2L, FL3209-3L
and FL3209-4L, and have an improved physical design.
We will continue to support existing customers of the
superseded parts.
The FL Series of transformers is designed for use in
cold cathode fluorescent lamp (CCFL) power supplies at
Part
number
1
Schematic Package
FL2015-1L_
B
1
FL2015-2L_
A
1
FL2015-3L_
A
1
FL2015-4L_
A
1
FL2015-5L_
A
1
FL2015-6L_
B
1
FL2015-7L_
A
1
FL2015-8L_
A
1
FL2015-9L_
A
1
FL2015-10L_
A
1
FL3209-5L_
C
5
FL3209-6L_
D
5
FL2810-1L_
C
4
Turns ratio
pri : sec
pri : fb
1
:
67
1
:
0.19
1
:
67
1
:
0.19
1
:
100
1
:
0.25
1
:
50
1
:
0.14
1
:
125
1
:
0.38
1
:
67
1
:
0.19
1
:
67
1
:
0.19
1
:
86
1
:
0.21
1
:
100
1
:
0.25
1
:
93
1
:
0.25
1
:
100
—
1
:
93
1
:
0.17
1
:
100
—
Output
(Watts)
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
6.0
4.5
3.5
3.5
4.5
operating frequencies up to 100 kHz. With output power
from 3.5 to 6.0 Watts, these transformers are ideal for
LCD backlight applications. They are available in two
different gull wing, surface mount packages and one in-
board configuration for height restricted designs.
Free evaluation samples are available by contacting
Coilcraft or ordering them on-line at
www.coilcraft.com.
Inductance
2
Imax
nom (µH) sec (mA)
43
5.0
43
5.0
19
5.0
44
7.0
20
7.0
48
11.0
50
11.0
31
11.0
22
11.0
40
11.0
48
5.0
40
5.0
35
7.0
Vrms
3
pri
sec
22 1600
23 1600
16 1600
32 1600
12 1600
23 1600
23 1600
18 1600
16 1600
17 1600
16 1600
17 1600
15 1500
Vinst max
4
pri
sec
25.0 2000
29.0 2000
20.0 2000
40.0 2000
16.0 2000
29.0 2000
29.0 2000
23.0 2000
20.0 2000
21.0 2000
20.0 2000
21.0 2000
16.5 1650
DCR max (Ohms)
pri
sec
fb
0.220 285 0.10
0.220 285 0.10
0.190 285 0.10
0.220 165 0.10
0.160 330 0.10
0.160 176 0.10
0.160 176 0.10
0.132 176 0.10
0.132 176 0.10
0.175 675 0.50
0.350 362 —
0.400 800 0.08
0.220 500 —
1. When ordering, please specify a
packaging
code:
FL2810-1LD
Packaging: D
= 13″ machine ready reel. EIA-481 embossed plastic
tape.
Package 1: 400 parts per full reel.
Package 4: 750 parts per full reel.
Package 5: 1000 parts per full reel.
B
= Less than full reel. In tape, but not machine ready.
To have a leader and trailer added ($25 charge), use
code letter D instead.
Inductance is measured across both halves of the primary.
Vrms = continuous voltage.
Vinst = instantaneous voltage at startup.
Ambient operating temperature range
−40°C
to +85°C.
Electrical specifications at 25°C.
Isolation
(tested for one minute)
Part
number
FL2015
FL3209
FL2810
Primary to
secondary
1500 Vrms
500 Vrms
1500 Vrms
Primary to
feedback
500 Vrms
500 Vrms
—
All windings
to core
1500 Vrms
1500 Vrms
1500 Vrms
Note: For Schematic B, primary is connected to secondary at pin 3.
The primary is not isolated from the secondary.
2.
3.
4.
5.
6.
Schematics
A
1
8
1
B
3
2
C
6
2
D
6
Primary
3
5
2
Primary
3
Secondary
Feedback
4
5
2
Primary
3
Secondary
Feedback
5
4
1
7
Secondary
Primary
3
4
Secondary
Feedback
4
9
9
7
For Royer
topology
For Royer
topology
For full-bridge
topology
For Royer
topology
Document 293-1
Revised 09/13/11
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
© Coilcraft Inc. 2012
This product may not be used in medical of high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check out web site for latest information.
Document 293 -2
CCFL Transformers
Package 1
0.310
max
7,87
10
1
0.044
1,13
0.004/0,10
0.965 max
24,51
0.028 typ
0,70
0.975
min
24,77
0.825
max
20,96
6
10
1
7
0.075
min
1,91
0.050
1,27
0.610
max
15,49
7
0.098 cen
2,50
6
10
Recommended
Land Pattern
1
0.098 cen
2,50
Weight:
5.5 – 6.1 g
Terminations:
Tin-silver over tin over nickel over phos-bronze
Tape and reel:
400/13″ reel 44 mm tape width
For packaging data see Tape and Reel Specifications section.
Package 4
0.205 max
5,21
9
1
0.037
0,93
1.275
max
32,39
0.004/0,10
1.295
32,89
0.063
cen
1,60
0.028
0,70
9
1.100
27,95
1
0.120
3,05
7
1.163
29,54
0.066
min
1,68
6
0.402 max
10,21
7
6
C
L
0.020 (7×)
0,50
Weight:
3.6 g
Terminations:
Tin-silver over tin over nickel over phos-bronze
Tape and reel:
750/13″ reel 44 mm tape width
For packaging data see Tape and Reel Specifications section.
0.120
3,05
9
Recommended
Land Pattern
0.057
1,45
0.157
4,00
0.157
4,00
0.063
(3×)
1,60
1
0.030
(8×)
0,76
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 293-2
Revised 09/13/11
© Coilcraft Inc. 2012
This product may not be used in medical of high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check out web site for latest information.
Document 293 -3
CCFL Transformers
Package 5 – In-board mounting
Dot indicates pin 1
8
0.016
typ
0,40
1
8
Recommended
Land Pattern
Minimum PCB cutout
0.382 × 1.173
9,70 × 29,80
0.020
0,51
1
0.366 max
9,30
7
6
0.063 cen
1,60
7
0.137
min
3,48
6
1.440
min
36,58
0.063 cen
1,60
0.225 max
5,72
7
1.165
29,60
1.439 max
36,55
6
0.150 max
3,81
In-board Mounting
Weight:
3.8 – 4.0 g
Terminations:
Tin-silver over tin over copper over copper-steel
Tape and reel:
1000/13″ reel 56 mm tape width
For packaging data see Tape and Reel Specifications section.
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 293-3
Revised 09/13/11
© Coilcraft Inc. 2012
This product may not be used in medical of high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check out web site for latest information.
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