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LTC3835IGN-1 Datasheet(PDF) 6 Page - Linear Technology |
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LTC3835IGN-1 Datasheet(HTML) 6 Page - Linear Technology |
6 / 28 page LTC3835 6 3835fc TYPICAL PERFORMANCE CHARACTERISTICS Total Input Supply Current vs Input Voltage EXTVCC Switchover and INTVCC Voltages vs Temperature INTVCC Line Regulation Maximum Current Sense Voltage vs ITH Voltage Sense Pins Total Input Bias Current Maximum Current Sense Threshold vs Duty Cycle Foldback Current Limit Quiescent Current vs Temperature SENSE Pins Total Input Bias Current vs ITH INPUT VOLTAGE (V) 5 350 300 250 200 150 100 50 0 20 30 3835 G10 10 15 25 35 300μA LOAD NO LOAD TEMPERATURE (°C) –45 4.0 4.2 4.6 4.8 5.0 6.0 5.4 –5 35 55 3835 G11 4.4 5.6 5.8 5.2 –25 15 75 95 EXTVCC FALLING EXTVCC RISING INTVCC INPUT VOLTAGE (V) 0 5.00 5.05 5.15 5.20 5.25 5.50 5.35 10 20 25 3835 G12 5.10 5.40 5.45 5.30 515 30 35 40 ITH PIN VOLTAGE (V) 0 40 60 100 0.6 1.0 3835 G13 20 0 0.2 0.4 0.8 1.2 1.4 –20 –40 80 PULSE SKIPPING FORCED CONTINUOUS BURST MODE (RISING) BURST MODE (FALLING) 10% Duty Cycle VSENSE COMMON MODE VOLTAGE (V) 0 –700 –600 –400 –300 –200 6789 200 3835 G14 –500 12345 10 –100 0 100 DUTY CYCLE (%) 0 40 80 120 20 60 100 20 40 60 80 3835 G15 100 10 030 50 70 90 FEEDBACK VOLTAGE (V) 0 0 20 60 80 100 0.2 0.4 0.5 0.9 3835 G16 40 0.1 0.3 0.6 0.7 0.8 120 TRACK/SS = 1V TEMPERATURE (°C) –45 80 85 90 75 3835 G17 75 70 60 –15 15 45 –30 90 0 30 60 65 100 95 PLLIN/MODE = 0V ITH VOLTAGE (V) 0 2 4 6 8 12 3835 G18 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 10 VSENSE = 3.3V TA = 25ºC, unless otherwise noted. |
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