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LT3474IFE-1-TRPBF Datasheet(PDF) 4 Page - Linear Technology |
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LT3474IFE-1-TRPBF Datasheet(HTML) 4 Page - Linear Technology |
4 / 20 page LT3474/LT3474-1 4 3474fd TYPICAL PERFORMANCE CHARACTERISTICS Current Limit vs Duty Cycle Switch Current Limit vs Temperature Current Limit vs Output Voltage Oscillator Frequency vs Temperature Oscillator Frequency vs RT Oscillator Frequency Foldback LED Current vs VADJ LED Current vs Temperature Switch Voltage Drop VADJ (V) 0 600 800 1000 1 3474 GO3 400 200 0 0.25 0.5 0.75 1.25 TA = 25°C TEMPERATURE (°C) –50 800 1000 1200 25 75 3474 G04 600 400 –25 0 50 100 125 200 0 VADJ = VREF VADJ = VREF/5 SWITCH CURRENT (mA) 0 700 600 500 400 300 200 100 0 3474 G05 500 1000 1500 TA = 25°C DUTY CYCLE (%) 0 1.5 2 2.5 80 3474 G06 1 0.5 0 20 40 60 100 TYPICAL MINIMUM (125°C) MINIMUM (85°C) TEMPERATURE (°C) –50 –25 0 1 2.5 0 50 75 3474 G07 0.5 2 1.5 25 100 125 VOUT (V) 0 0 0.5 1 1.5 2 2.5 2 46 8 3474 G08 10 12 TA = 25°C RT (kΩ) 10 100 1000 100 3474 G09 TA = 25°C TEMPERATURE (°C) –50 400 450 500 550 600 –25 0 25 50 3474 G10 75 100 125 RT = 80.6k VOUT (V) 0 0 100 200 300 400 500 600 0.5 1 1.5 2 3474 G11 2.5 TA = 25°C RT = 80.6k |
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