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LT3579EFE-PBF Datasheet(PDF) 5 Page - Linear Technology |
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LT3579EFE-PBF Datasheet(HTML) 5 Page - Linear Technology |
5 / 40 page LT3579/LT3579-1 5 35791f TYPICAL PERFORMANCE CHARACTERISTICS Switch Current Limit vs Temperature Commanded Switch Current vs SS Positive Feedback Voltage Oscillator Frequency Oscillator Frequency During Soft-Start CLKOUT Duty Cycle Switch Current Limit Switch Saturation Voltage Switch Current Sharing DUTY CYCLE (%) 20 0 6 7 8 9 5 4 3 2 1 10 60 70 80 30 40 35791 G01 50 SW1 + SW2 CURRENT (A) 0 0 300 250 150 200 100 50 350 45678 12 35791 G02 3 VSW1 = VSW2 SW1 CURRENT (A) 0 0.0 0.1 0.8 0.9 0.6 0.7 0.4 0.5 0.2 0.3 1.0 3 3.5 4 1 1.5 0.5 35791 G03 2 2.5 TEMPERATURE (°C) –50 0 8 9 7 6 5 4 3 2 1 10 –25 75 100 125 150 025 35791 G04 50 TA = 25°C, unless otherwise noted. SS VOLTAGE (V) 0 0 9 5 6 7 8 4 3 2 1 10 0.6 0.8 1 1.2 0.2 35791 G05 0.4 TEMPERATURE (°C) –50 1.2 1.225 1.22 1.215 1.21 1.205 1.23 –25 50 75 100 125 150 0 35791 G06 25 TEMPERATURE (°C) –50 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 –25 100 125 150 025 50 35791 G07 75 RT = 432k RT = 34k FB VOLTAGE (V) 0 0 1/6 1/5 1/4 1/3 1/2 1 0.6 0.8 1 1.2 0.2 0.4 35791 G08 BOOSTING CONFIGURATIONS INVERTING CONFIGURATIONS TEMPERATURE (°C) –50 0 70 60 50 40 30 20 80 –25 75 100 125 150 025 35791 G09 50 |
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