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0RSB-40U12B Datasheet(PDF) 2 Page - Bel Fuse Inc. |
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0RSB-40U12B Datasheet(HTML) 2 Page - Bel Fuse Inc. |
2 / 12 page Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com 2 ISOLATED DC/DC CONVERTERS 18 Vdc - 75 Vdc Input, 12 Vdc/3.5 A Output Apr. 19, 2011 Bel Power, Inc. , a subsidiary of Bel Fuse, Inc. Absolute Maximum Ratings Parameter Min Typ Max Unit Notes Continuous Input Voltage -0.3 - 80 V Input Transient Voltage - - 100 V 100mS maximum Remote On/Off -0.3 - 18 V I/O isolation voltage - - 1500 V Ambient Temperature -40 - 85 C Storage Temperature -55 - 125 C Note: Ratings used beyond the maximum ratings may cause a reliability degradation of the converter or may permanently damage the device. Input Specifications Parameter Min Typ Max Unit Notes Operating Input Voltage 18 48 75 V Input Current (full load) - - 3.5 A Input Current (no load) - 60 120 mA Remote Off Input Current - 1 3 mA Input Reflected Ripple Current (rms) - 3 7 mA Input Reflected Ripple Current (pk-pk) - 20 50 mA With simulated source impedance of 15uH, 5Hz to 20MHz. Use a 100uF/100V electrolytic capacitor with ESR=1 ohm max, at 200KHz@25°C. I 2t Inrush Current Transient - 0.01 0.02 A 2s Input Over Voltage Lockout 78 - 82 V Turn-on Voltage Threshold 16.6 17.2 17.8 V Turn-off Voltage Threshold 16.2 16.8 17.4 V Note: All specifications are typical at 25 C unless otherwise stated. Output Specifications Parameter Min Typ Max Unit Notes Output Voltage Set Point 11.75 12 12.25 V Vin=48V, Io=50% load Load Regulation - ±9 ±18 mV Line Regulation - ±6 ±15 mV Regulation Over Temperature (-40deg.C-85deg.C) - ±20 ±35 mV Output Ripple and Noise (pk-pk) - 90 180 mV Output Ripple and Noise (rms) - 30 55 mV 0-20MHz BW, with a 1µF ceramic capacitor and a 10uF Tantalum cap at output. Output Current Range 0 - 3.5 A Output DC Current Limit 3.7 5 6 A Short Circuit Surge Transien - 0.5 1 A 2s Hiccup mode, auto recovery Turn on Time - 25 50 mS |
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