Document 509 Flyback Transformer For TI LM5071 & LM5072 PD Controllers • Dual-output flyback transformer for Power over Ethernet • Operates in continuous mode at 250 kHz with 14 – 60 V input • 2000 Vrms isolation from primary and auxiliary to secondaries Core material Ferrite Terminations RoHS compliant tin-silver over tin over nickel over phos bronze. Other terminations available at additional cost. Weight 6.35g Ambient temperature –40°C to +85°C Storage temperature Component: –40°C to +85°C. Tape and reel packaging: –40°C to +80°C Resistance to soldering heat Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C / 85% relative humidity) Failures in Time (FIT) / Mean Time Between Failures (MTBF) 38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332 Packaging 175 per 13″ reel. Plastic tape: 32 mm wide, 0.5 mm thick, 28 mm pocket spacing, 12.93 mm pocket depth PCB washing Tested with pure water or alcohol only. For other solvents, see Doc787_PCB_Washing.pdf 2 3 Part L at 0 A L at Ipk number1 ±10% (µH) min (µH) DA2257-AL_ 35.0 30.0 DCR max Leakage L4Turns Ipk3 (Ohms) max (µH) ratios (A) Outputs 0.225 (aux) 0.95 2 : 1(pri : aux) 2.7 10 V, 0.05 A (aux) 0.138 (gate) 3.6 : 1(pri : gate) 5.5 V, 0.05 A (gate) 0.010 (sec 1) 6 : 1(pri : sec1) 3.3 V, 2.0 A (sec 1) 0.018 (sec 2) 3.6 : 1(pri : sec 2) 5.0 V, 1.0 A (sec 2) 0.062 (pri) 1. When ordering, please specify packaging code: DA2257-ALD Packaging:D =13″ machine-ready reel. EIA-481 embossed plastic tape (175 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. 2. Inductance is for the primary, measured at 250 kHz, 0.2 Vrms, 0 Adc. 3.Ipk is peak primary current drawn at minimum input voltage. 4. Leakage inductance is for the primary winding with all other pins shorted. 5. Electrical specifications at 25°C. 9 Dot above pin1 5 Pri 0.500 max 12,70 0.004 /0,10 0.039 1,00 0.699 max 17,75 0.512 13,00 5 0.028 0,70 6 Sec 1 1 10 0.590 14,99 1 2 7 Sec 2 6 Recommended Land Pattern 0.530 max 13,46 1 0.061 1,55 8 4 Aux 0.050 1,27 Gate 10 0.098 2,50 Dimensions are in inches mm 0.098 2,50 US +1-847-639-6400 [email protected] UK +44-1236-730595 [email protected] Taiwan +886-2-2264 3646 [email protected] China +86-21-6218 8074 [email protected] Singapore + 65-6484 8412 [email protected] Document 509 Revised 10/29/08 © Coilcraft Inc. 2014 This product may not be used in medical or high risk applications without prior Coilcraft approval. Specification subject to change without notice. Please check web site for latest information.