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LT3475IFE Datasheet(PDF) 4 Page - Linear Technology |
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LT3475IFE Datasheet(HTML) 4 Page - Linear Technology |
4 / 20 page LT3475/LT3475-1 4 3475fb Switch Current Limit vs Duty Cycle Switch Current Limit vs Temperature Oscillator Frequency vs Temperature Oscillator Frequency Foldback Oscillator Frequency vs RT Current Limit vs Output Voltage TYPICAL PERFOR A CE CHARACTERISTICS LED Current vs VADJ LED Current vs Temperature Switch On Voltage VADJ (V) 0 0 0.25 0.50 0.75 1.00 1.25 1.50 0.25 0.5 0.75 1 3475 G01 1.25 TA = 25°C TEMPERATURE (˚C) –50 0.8 1.0 1.2 25 75 3475 G02 0.6 0.4 –25 0 50 100 125 0.2 0 VADJ = VREF • 7/30 VADJ = VREF • 2/3 SWITCH CURRENT (A) 0 0 100 200 300 400 0.5 1.0 1.5 2.0 3475 G03 500 600 TA = 25°C DUTY CYCLE (%) 0 0 0.5 1.0 1.5 2.0 2.5 3.0 20 40 60 80 3475 G04 100 MINIMUM TYPICAL TA = 25°C TEMPERATURE (°C) –50 2.0 2.5 3.5 25 75 3475 G05 1.5 1.0 –25 0 50 100 125 0.5 0 3.0 VOUT (V) 0 0 0.5 1.0 1.5 2.0 0.5 2.5 3.0 3.5 2.0 1.0 1.5 4.0 3475 G06 2.5 3.0 TA = 25°C TEMPERATURE (˚C) –50 600 650 700 25 75 3475 G07 550 500 –25 0 50 100 125 450 400 RT = 24.3kΩ VOUT (V) 0 500 600 700 2.0 3475 G08 400 300 0.5 1.0 1.5 2.5 200 100 0 TA = 25°C RT = 24.3kΩ RT (kΩ) 1 10 1000 10 100 3475 G09 TA = 25°C |
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