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78253/35VC Datasheet(PDF) 1 Page - Murata Power Solutions Inc. |
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78253/35VC Datasheet(HTML) 1 Page - Murata Power Solutions Inc. |
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1 / 7 page  KMP_78253C_F01 Page 1 of 7 78253 Series MAX253 Compatible Converter Transformers www.murata.com For full details go to www.cd4power.com/rohs For full details go to https://www.murata.com/en- global/products/power/rohs www.murata.com FEATURES n RoHS compliant n Maxim MAX253 compatible n 3.3V and 5V versions n Isolation to 4kVDC n Frequency range to 500kHZ n Toroidal construction n Industry-standard pinout n UL 94 V-0 package materials n Fully encapsulated n Low profile n Surface mount option n Industrial temperature range DESCRIPTION The 78253 series of converter transformers are specifically designed for use with the MAX253 chip set to provide isolated power supplies. The 5V version can supply 1W and the 3.3V version can supply 500mW. A centre tapped secondary winding allows for full bridge, half bridge or voltage doubling. Surface-mount parts The surface-mount (M suffix) products are not recommended for new designs. For recommended alternatives please refer to the 78253J Series datasheet. SELECTION GUIDE Order Code Input Voltage Output Voltage Max. Output Current Isolation Voltage Turns Ratio Package Style Recommended Alternative V V mA VDC 78253/35C 3.3 5.0 100 1500 1:2.27 DIL 78253/55C 5.0 5.0 200 1500 1:1.31 DIL 78253/35VC 3.3 5.0 100 4000 1:2.14 DIL 78253/55VC 5.0 5.0 200 4000 1:1.33 DIL 78253/35MC 3.3 5.0 100 1500 1:2.27 SM 78253/3JC 78253/55MC 5.0 5.0 200 1500 1:1.31 SM 78253/55JC 78253/35MVC 3.3 5.0 100 4000 1:2.14 SM 78253/35JVC 78253/55MVC 5.0 5.0 200 4000 1:1.33 SM 78253/55JVC ORDER CODE DETAILS Order Code Package Type Packaging Type Quantity 78253/XX(V)C 6 Pin DIL Tube 50 78253/XXM(V)C 6 Pin SM Tube 50 78253/XXM(V)C-R 6 Pin SM Tape & Reel 500 78253/35(M)C CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Primary Inductance, L P 100kHz, 250mV 0.18 0.38 0.51 mH Secondary Inductance, L S 100kHz, 250mV 0.93 2.00 2.70 mH Leakage Inductance, L L 100kHz, 250mV 0.30 1.00 μH Interwinding Capacitance, C WW 100kHz, 250mV 30 50 pF Primary D.C. Resistance, R DC >0.1VDC 0.40 1.00 Ω Volt-time Product, Et Pins 1/2 or 2/3 30 35 Vμs 78253/55(M)C CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Primary Inductance, L P 100kHz, 250mV 0.60 0.83 1.50 mH Secondary Inductance, L S 100kHz, 250mV 1.10 1.40 2.50 mH Leakage Inductance, L L 100kHz, 250mV 0.35 1.30 μH Interwinding Capacitance, C WW 100kHz, 250mV 30 50 pF Primary D.C. Resistance, R DC >0.1VDC 0.70 1.50 Ω Volt-time Product, Et Pins 1/2 or 2/3 40 50 Vμs All specifications typical at T A=25°C |
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