LT1249CN8#PBF Linear Technology, LT1249CN8#PBF Datasheet
LT1249CN8#PBF
Specifications of LT1249CN8#PBF
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LT1249CN8#PBF Summary of contents
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... Typical 250 A Start-Up Supply Current Rejects Line Switching Noise Synchronization Capability Low Quiescent Current: 9mA Fast 1.5A Peak Current Gate Driver U APPLICATIO S Universal Power Factor Corrected Power Supplies Preregulators up to 1500W , LTC and LT are registered trademarks of Linear Technology Corporation. W BLOCK DIAGRA VA OUT 5 + 7.5V V ...
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LT1249 ABSOLUTE MAXIMUM Supply Voltage ....................................................... 27V GTDR Current Continuous ..................................... 0.5A GTDR Output Energy (Per Cycle) ............................. Input Current ................................................. 20mA AC V Input Voltage ............................................ V SENSE M Input Current.............................................. 5mA OUT ...
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ELECTRICAL CHARACTERISTICS range, otherwise specifications are 5V, no load on any outputs, unless otherwise noted. OUT PARAMETER Reference Reference Output Voltage Reference Output Voltage Worst Case Reference Output Voltage Line Regulation Multiplier Multiplier Output Current Multiplier ...
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LT1249 W U TYPICAL PERFORMANCE CHARACTERISTICS Reference Voltage vs Temperature 7.536 7.524 7.512 7.500 7.488 7.476 7.464 7.452 7.440 7.428 –75 –50 – JUNCTION TEMPERATURE ( C) Supply Current vs Supply Voltage – ...
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W U TYPICAL PERFORMANCE CHARACTERISTICS Synchronization Threshold at CA OUT 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 –50 – 125 100 TEMPERATURE ( C) 1249 G11 Voltage Amp Sink Current Limits (Threshold) ...
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LT1249 PIN FUNCTIONS V (Pin 6): This is the inverting input to the voltage SENSE amplifier. V (Pin 7): This is the supply of the chip. The LT1249 has CC a very fast gate driver required to ...
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U U APPLICATIONS INFORMATION Line Current Limiting Maximum voltage across R is internally limited to MOUT 1.1V. Therefore, line current limit is 1.1V divided by the sense resistor R . With a 0.2 sense resistor R S current limit is ...
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LT1249 U U APPLICATIONS INFORMATION The Figure 3 circuit therefore has 382V on V overvoltage level = (V + 44V), or 426V. With OUT hysteresis, V then has to drop 22V to 404V before OUT feedback recovers ...
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U U APPLICATIONS INFORMATION V = (2)(0.78A)(7 11.5V. If less ripple is desired, P-P higher capacitance should be used. The selection of the output capacitor should also be based on the operating ripple current through the capacitor. The ...
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LT1249 U U APPLICATIONS INFORMATION voltages above 8V and the 12V limit is only for surge conditions. In normal operation, the voltage into M exceed 1.1V, but under surge conditions, the voltage could temporarily go higher. To date, no field ...
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... FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. ...
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... Complete Solution for Universal Off-Line Switching Power Supplies MURH860 V OUT + 1M 180 F 20k 10 † GND 7.5V V REF RUN + – – RUN OSC SYNC 16V 20 A 35pF sn1249 1249fbs LT/TP 0799 2K REV B • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 1994 GTDR 8 ** 1N5819 1249 TA01 ...