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LT1939EDD Datasheet(PDF) 4 Page - Linear Technology |
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LT1939EDD Datasheet(HTML) 4 Page - Linear Technology |
4 / 24 page LT1939 4 1939f TYPICAL PERFORMANCE CHARACTERISTICS Feedback Voltage vs Temperature RT/SYNC Voltage vs Temperature Shutdown Threshold and Minimum Input Voltage vs Temperature Shutdown Pin Currents vs Temperature Shutdown Quiescent Current vs Temperature Error Amplifier gm vs Temperature Soft-Start Source Current vs Temperature Soft-Start Feedback Offset vs Temperature VC Switching Threshold vs Temperature TEMPERATURE (°C) –50 0.800 FB LFB 0.810 150 1939 G01 0.790 0.780 0 50 100 –25 25 75 125 0.820 0.795 0.805 0.785 0.815 TEMPERATURE (°C) –50 0.90 0.92 0.96 0.98 1.00 1.10 1.04 0 50 75 1939 G02 0.94 1.06 1.08 1.02 –25 25 100 125 150 RRT/SYNC = 90.9k RRT/SYNC = 15k TEMPERATURE (°C) –50 2.0 2.5 3.0 25 75 1939 G03 1.5 1.0 –25 0 50 100 150 125 0.5 0 MINIMUM INPUT VOLTAGE SHUTDOWN THRESHOLD TEMPERATURE (°C) –50 0 1 2 3 4 050 100 150 1939 G04 5 6 –25 25 75 125 VSHDN = 0.7V VSHDN = 0.9V TEMPERATURE (°C) –50 0 2.5 5.0 7.5 10.0 050 100 150 1939 G05 12.5 15.0 –25 25 75 125 TEMPERATURE (°C) –50 100 150 200 250 300 050 100 150 1939 G06 350 400 –25 25 75 125 TEMPERATURE (°C) –50 1.5 1.7 2.1 2.3 2.5 3.5 2.9 0 50 75 1939 G07 1.9 3.1 3.3 2.7 –25 25 100 125 150 TEMPERATURE (°C) –50 50 75 100 125 150 LFB FB –25 0 25 50 1939 G08 75 100 125 150 TEMPERATURE (°C) –50 0.50 0.55 0.65 0.70 0.75 50 0.95 1939 G09 0.60 0 –25 75 100 25 150 125 0.80 0.85 0.90 |
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