Flyback Power Transformer ELECTRONICS INC. EPC3166-X • Used in SMPS Flyback Topology • Designed for use with National Semiconductor Chips LM2585 to LM2588 • UL94V-0 Recognized Components • UL1446 Class B Insulation System • Very Low Core Loss • 750 Vrms Isolation Electrical Parameters @ 25° C PCA Part Number Chipset Xfmr Code Voltage (Vdc) V in Pins 1-2 EPC3166-1 EPC3166-2 EPC3166-5 EPC3166-6 EPC3166-7 V out 2 V out 1 Primary OCL (µH ± 10%) V out 3 Sec. 1 @ 10 KHz, 0.1 Vrms Sec. 2 Schematic Turns Ratio Current (Amp. Max.) Sec. 3 LM2587/88 N 1.8 N 1:1 T1 4-6 3.3 N 22 N LM2587/88 N 1.4 N 1:1 T1 4-6 5.0 N 22 N LM2587/88 N 1.2 N 1:1 T1 8-16 12.0 N 22 N LM2585/86 N 2.5 N 1:1 --14-16 11.25 N 22 N LM2587/88 -12 0.3 N 1:2.5:2.5 T2 4-6 12.0 N 22 0.3 LM2585/86 12 1.8 0.25 1:.5:1.15:1.15 T5 18-36 5.0 -12 66 0.25 LM2585/86 -12 0.15 N 1:1.2:1.2 T6 4-6 12.0 N 65 0.15 LM2585/86 -12 0.6 N 1:1.2:1.2 T6 18-36 12.0 N 65 0.6 LM2585/86 N 1.4 N 1:1 T7 4-6 3.3 N 47 N LM2585/86 N 1.0 N 1:1 T7 4-6 5.0 N 47 N LM2585/86 N 0.8 N 1:1 T7 8-16 12.0 N 47 N LM2585/2586/2587 Switching Frequency : 100 KHz • LM2588 Switching Frequency : 200 KHz • • Note : “N” means Not Required/No Connections • Package Schematic A .787 Max. (20.00) White Dot Pin # 1 2 7 1 8 Vout 1 Vin PCA EPC3166-X D.C .689 Max. (17.50) Side Schematic B .150 Min. (3.80) .150 (3.80) 1 A A A A B C B B A A A Vout 1 Vout 1 4 2 8 1 6 Vin .514 (13.05) 7 7 .026 (.650) .669 Max. (17.00) Schematic C 8 Vout 2 5 Bottom 2 6 1 5 Vout 2 Vin 3 8 .201 (5.10) Vout 3 5 4 .118 Max. (3.00) Unless Otherwise Specified Dimensions are in Inches /mm ± .010 /.25 PCA ELECTRONICS, INC. 16799 SCHOENBORN ST. NORTH HILLS, CA 91343 Product performance is limited to specified parameters. Data is subject to change without prior notice. CSC3166-X Rev. 3 2/25/04 FT TEL: (818) 892-0761 FAX: (818) 894-5791 http://www.pca.com