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LTC3890EGN-1TRPBF Datasheet(PDF) 6 Page - Linear Technology |
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LTC3890EGN-1TRPBF Datasheet(HTML) 6 Page - Linear Technology |
6 / 36 page LTC3890-1 6 38901f 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– Pin Input Bias Current Maximum Current Sense Threshold vs Duty Cycle Foldback Current Limit Quiescent Current vs Temperature INTVCC vs Load Current TEMPERATURE (°C) –45 4.0 4.2 4.6 4.8 5.0 6.0 5.4 5 55 80 38901 G11 4.4 5.6 5.8 5.2 –20 30 105 130 INTVCC EXTVCC RISING EXTVCC FALLING VITH (V) 0 40 60 80 0.6 1.0 38901 G13 20 0 0.2 0.4 0.8 1.2 1.4 –20 –40 Burst Mode OPERATION PULSE SKIPPING MODE FORCED CONTINUOUS MODE INPUT VOLTAGE (V) 0 –800 –500 –600 –700 –400 –300 –200 0 5 10 15 20 38901 G14 25 –100 DUTY CYCLE (%) 0 75 85 80 80 38901 G15 65 70 60 20 40 50 100 90 60 10 30 90 70 TEMPERATURE (°C) –45 75 30 38901 G17 60 50 –20 5 55 45 40 80 70 65 55 80 105 130 LOAD CURRENT (mA) 0 5.10 5.15 5.20 160 38901 G18 5.05 5.00 4.95 20 40 60 80 100 120 140 180 200 EXTVCC = 0V EXTVCC = 8.5V VIN = 12V INPUT VOLTAGE (V) 0 200 300 20 30 35 40 45 50 55 60 65 15 10 525 38901 G10 150 100 50 250 NO LOAD 300μA INPUT VOLTAGE (V) 4.8 5.0 5.2 20 30 35 40 45 50 55 60 65 15 10 525 38901 G12 4.9 5.1 FEEDBACK VOLTAGE (MV) 0 40 60 800 3890 G16 20 0 200 400 500 80 30 50 10 70 600 100 300 700 |
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