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LTC3774 Datasheet(PDF) 5 Page - Linear Technology |
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LTC3774 Datasheet(HTML) 5 Page - Linear Technology |
5 / 38 page LTC3774 5 3774fc For more information www.linear.com/LTC3774 TYPICAL PERFORMANCE CHARACTERISTICS Input Quiescent Current vs Input Voltage Shutdown Current vs Input Voltage INTVCC Line Regulation Oscillator Frequency vs Input Voltage Maximum Current Sense Threshold vs Common Mode Voltage Maximum Current Sense Threshold vs Feedback Voltage (Current Foldback) Current Sense Threshold vs ITH Voltage COMMON MODE VOLTAGE (V) 0 20 25 30 1.5 2 2.5 3 3774 G01 15 10 0.5 1 3.5 5 0 35 INTVCC 3/4 INTVCC 1/2 INTVCC 1/4 INTVCC 0 FEEDBACK VOLTAGE (V) 0 20 25 30 0.2 0.3 0.4 0.5 3774 G02 15 10 0.1 0.6 5 0 35 ILIM = 0 ILIM = 1/4 INTVCC ILIM = 1/2 INTVCC ILIM = 3/4 INTVCC ILIM = INTVCC V(ITH) (V) 0 20 25 30 0.75 1 1.5 1.25 1.75 3774 G03 15 10 5 0 0.25 0.5 2 –5 –10 35 ILIM = 0 ILIM = 1/4 INTVCC ILIM = 1/2 INTVCC ILIM = 3/4 INTVCC ILIM = INTVCC INPUT VOLTAGE (V) 0 15 20 30 25 35 3774 G04 10 8 6 4 5 10 40 2 0 12 INPUT VOLTAGE (V) 0 15 20 30 25 35 3774 G05 50 40 30 20 5 10 40 10 0 60 INPUT VOLTAGE (V) 0 15 20 30 25 35 3774 G06 5 4 3 2 5 10 40 1 0 6 INPUT VOLTAGE (V) 0 15 20 30 25 35 3774 G07 1000 800 600 400 5 10 40 200 0 1200 23.2k 47.5k 75k Load Step (Continuous Conduction Mode) 50µs/DIV 3774 G08 VOUT = 1.5V 50mV/DIV AC-COUPLED ILOAD 5A-DIV 15A TO 30A VIN = 12V |
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