KA4947-AE

Document 890 Flyback Transformer – KA4947-AE Primary (L1) Part Turns   inductance2   number1 ratio ±20% (µH) KA4947-AE_ 2 : 1 400 DCR max L1   L2   Ipk (A)3 1.10 0.875 0.23 1. When ordering, please specify packaging code: KA4947-AEC Packaging: C = 7″ machine-ready reel. EIA-481 embossed plastic tape (250 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 C instead. D = 13″ machine-ready reel. EIA-481 embossed plastic tape. Factory order only, not stocked (1000 parts per full reel). 2. Inductance is measured at 100 kHz, 0.1 Vrms, 0 Adc on an Agilent/HP 4284A LCR meter or equivalent. 3. Peak primary current drawn at minimum input voltage 4. Electrical specifications at 25°C. Refer to Doc 362 “Soldering Surface Mount Components” before soldering. + 3 1D L1 L2 C VIN C 42 PWM – Typical Flyback Converter + VOUT – Developed for t...