Document 293 -1 CCFL Transformers The FL Series of transformers is designed for use in cold cathode fluorescent lamp (CCFL) power supplies at 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 four different gull wing or surface mount Turns ratio Part number1 Schematic Package pri : sec pri : fb FL2015-1L_ FL2015-2L_ FL2015-3L_ FL2015-4L_ FL2015-5L_ FL2015-6L_ FL2015-7L_ FL2015-8L_ FL2015-9L_ FL2015-10L_ FL3209-1L_ FL3209-2L_ FL3209-3L_ FL3209-4L_ FL2810-1L_ B A A A A B A A A A C D C D C 1 1 1 1 1 1 1 1 1 1 2 2 3 3 4 1 : 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 packages, including one in-board configuration for height restricted designs. Isolation is tested for one minute at 1500 Vrms between the primary and secondary windings and from each winding to the core. Free evaluation samples are available by contacting Coilcraft or ordering them on-line at www.coilcraft.com. Vrms3 Output Inductance2 Imax (Watts) nom (µH) sec (mA) pri sec 1 : 0.19 1 : 0.19 1 : 0.25 1 : 0.14 1 : 0.38 1 : 0.19 1 : 0.19 1 : 0.21 1 : 0.25 1 : 0.25 — 1 : 0.17 — 1 : 0.17 — 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 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 2: 1000 parts per full reel. Package 3: 1000 parts per full reel. Package 4: 800 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. 43 43 19 44 20 48 50 31 22 40 48 40 48 40 35 2. 3. 4. 5. 6. 5.0 5.0 5.0 7.0 7.0 11.0 11.0 11.0 11.0 11.0 5.0 5.0 5.0 5.0 7.0 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 max4 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 DCR max (Ohms) pri sec fb 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 1650 0.220 0.220 0.190 0.220 0.160 0.160 0.160 0.132 0.132 0.175 0.350 0.350 0.350 0.350 0.220 285 285 285 165 330 176 176 176 176 675 400 800 400 800 500 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.10 0.50 — 0.08 — 0.08 — 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. Schematics A 1 B 1 8 Secondary 5 2 5 2 9 For Royer topology Feedback 4 Primary 3 Secondary 4 9 For Royer topology Secondary 4 1 7 For flyback topology Feedback 5 7 For Royer topology Specifications subject to change without notice. Please check our website for latest information. Document 293-1 © Coilcraft, Inc. 2010 6 Primary 3 Primary 3 Secondary 4 2 6 2 Primary 3 Feedback D C 3 Revised 08/10/07 Document 293 -2 CCFL Transformers Package 1 0.310 max 7,87 1 10 0.004/0,10 0.044 1,13 0.965 max 24,51 0.975 min 24,77 1 10 0.825 max 20,96 0.028 typ 0,70 0.050 1,27 6 7 Recommended Land Pattern 0.600 max 15,24 7 10 6 0.098 cen 2,50 1 0.075 min 1,91 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 2 0.225 max 5,72 8 1 1.395 max 35,43 0.016 typ 0,40 1.30 max 33,02 1.127 28,63 7 1 0.020 0,51 6 8 Recommended Land Pattern 0.366 max 9,30 7 6 0.063 cen 1,60 8 0.15 min 3,81 1 0.063 cen 1,60 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. Specifications subject to change without notice. Please check our website for latest information. Document 293-2 © Coilcraft, Inc. 2010 Revised 08/10/07 Document 293 -3 CCFL Transformers Package 3 — In-board mounting 0.016 typ 0,40 1 8 0.366 max 9,30 In-board Mounting 7 6 0.063 cen 1,60 1.437 min 36,50 1.395 max 35,43 0.020 0,51 1.300 33,02 8 1 6 7 PCB cutout 0.235 max 5,97 0.382 × 1.300 9,70 × 33,02 1.298 max 32,94 7 0.068 min 1,73 6 Recommended Land Pattern 0.063 cen 1,60 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. Package 4 0.205 max 5,21 9 1 0.004/0,10 0.037 0,93 1.275 max 32,39 0.028 0,70 9 1.295 32,89 1.100 27,95 1 1.163 29,54 0.063 cen 1,60 7 0.402 max 10,21 0.240 6,10 7 9 6 0.020 (7×) 0,50 0.057 1,45 6 Recommended Land Pattern 0.030 0,76 1 0.066 min 1,68 0.319 8,10 0.063 1,60 Weight: 3.6 g Terminations: Tin-silver over tin over nickel over phos-bronze Tape and reel: 800/13″ reel 44 mm tape width For packaging data see Tape and Reel Specifications section. Specifications subject to change without notice. Please check our website for latest information. Document 293-3 © Coilcraft, Inc. 2010 Revised 08/10/07