Document 293 -1
CCFL Transformers
The FL Series of transformers is designed for use in cold
cathode fluorescent lamp (CCFL) power supplies.
With output power from 3.5 to 6.0 Watts, these transform-
ers are ideal for LCD backlight applications. They are
available in four different gull wing or surface mount
packages, including one in-board configuration for height
restricted designs.
Part number
FL2015-1
FL2015-2
FL2015-3
FL2015-4
FL2015-5
FL2015-6
FL2015-7
FL2015-8
FL2015-9
FL2015-10
FL3209-1
FL3209-2
FL3209-3
FL3209-4
FL2810-1
Turns ratio
Schematic Package
sec:pri
B
A
A
A
A
B
A
A
A
A
C
D
C
D
E
1
1
1
1
1
1
1
1
1
1
2
2
3
3
4
67:1
67:1
100:1
50:1
125:1
67:1
67:1
86:1
100:1
93:1
100:1
93:1
100:1
93:1
100:1
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
3.5
3.5
4.5
Inductance
nom (µH)
43
43
19
44
20
48
50
31
22
40
48
40
48
40
35
Imax
sec (A)
0.005
0.005
0.005
0.007
0.007
0.011
0.011
0.011
0.011
0.011
0.005
0.005
0.005
0.005
0.007
Vrms
1
pri
sec
22
23
16
32
12
23
23
18
16
17
16
17
16
17
15
1600
1600
1600
1600
1600
1600
1600
1600
1600
1600
1600
1600
1600
1600
1500
Vinst max
2
pri
sec
25.0
29.0
20.0
40.0
16.0
29.0
29.0
23.0
20.0
21.0
20.0
21.0
20.0
21.0
16.5
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
2000
1650
DCR max
(Ohms)
pri
sec
0.220
0.220
0.190
0.220
0.160
0.160
0.160
0.132
0.132
0.215
0.350
0.350
0.350
0.350
0.220
285
285
285
165
330
176
176
176
176
660
400
550
400
550
300
1. Vrms = continuous voltage.
2. Vinst = instantaneous voltage at startup.
3. Operating ambient temperature range 0°C to 70°C.
4. Electrical specifications at 25°C.
Schematics
A
1
B
8
1
C
3
2
6
2
D
6
2
E
6
Primary
3
Primary
3
Primary
3
Secondary
5
2
5
2
9
Secondary
Feedback
4
Primary
3
4
Secondary
4
1
7
Secondary
Feedback
5
Primary
3
4
Secondary
Feedback
4
9
7
8
Specifications subject to change without notice.
Document 293-1
Revised 01/10/03
Document 293 -2
CCFL Transformers
Package 1
0.300
max
7,62
10
1
0.004/0,10
0.044
1,13
0.955 max
24,26
0.965
min
24,51
0.842
max
21,39
7
6
10
1
0.028 typ
0,70
0.033
0,84
0.600
max
15,24
7
Recommended
Land Pattern
6
10
1
0.100 cen
2,54
0.060
min
1,52
0.100 cen
2,54
Package 2
0.215
max
5,46
8
1
1.395 max
35,43
1.398
min
35,51
1.280
max
32,50
1
8
0.016 typ
0,40
7
1.127
max
29,70
0.020
0,51
6
0.366
max
9,30
7
6
Recommended
Land Pattern
0.063 cen
1,60
8
0.128
min
3,25
1
0.063 cen
1,60
Specifications subject to change without notice.
Document 293-2
Revised 01/10/03
Document 293 -3
CCFL Transformers
Package 3 — In-board mounting
1.298 max
32,94
0.215
max
5,46
8
1
In-board Mounting
1.395 max
35,43
1.437
min
36,50
1.300
33,02
8
1
0.016
typ
0,40
1
8
0.020
0,51
0.366 max
9,30
7
6
PCB cutout
0.382 × 1.300
9,70 × 33,02
0.063 cen
1,60
7
0.068
min
1,73
Recommended
Land Pattern
6
0.063 cen
1,60
Package 4
0.195 max
4,95
9
0.037
0,93
1.285 max
32,64
1.100
27,95
1
9
7
1
0.004/0,10
1.295
min
32,89
0.020
typ
0,50
1.163 max
29,54
6
0.400 max
10,16
7
6
0.236
5,99
9
1
0.030 typ
0,76
0.026
0,66
C
L
0.063 cen
1,60
0.063 cen
1,60
0.056
min
1,42
Recommended
Land Pattern
Specifications subject to change without notice.
Document 293-3
Revised 01/10/03
