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LTC3454 Datasheet(PDF) 4 Page - Linear Technology |
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LTC3454 Datasheet(HTML) 4 Page - Linear Technology |
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4 / 12 page  LTC3454 4 3454f TYPICAL PERFOR A CE CHARACTERISTICS VLED vs VIN Maximum Regulated VOUT vs Temperature LED Power Efficiency vs LED Current Maximum Regulated VOUT vs VIN VIN (V) 2.7 40 42 46 48 50 60 54 3.5 4.3 4.7 3454 G10 44 56 58 52 3.1 3.9 5.1 5.5 PROGRAMMED ILED = 500mA TA = 25°C TEMPERATURE ( °C) –55 5.10 5.15 5.20 105 3454 G11 5.05 5.00 4.90 –15 25 65 –35 125 5 45 85 4.95 5.40 5.30 5.35 5.25 PROGRAMMED ILED = 1A VIN = 3.6V VIN (V) 2.7 5.10 5.15 5.20 5.1 3454 G12 5.05 5.00 4.90 3.5 4.3 5.5 3.1 3.9 4.7 4.95 5.40 5.30 5.35 5.25 PROGRAMMED ILED = 1A TA = 25°C Oscillator Frequency vs Temperature PROGRAMMED ILED (mA) 100 5.10 5.15 5.20 900 3454 G13 5.05 5.00 4.90 300 500 700 200 1000 400 600 800 4.95 5.40 5.30 5.35 5.25 VIN = 3.6V TA = 25°C NMOS RDS(ON) vs Temperature TEMPERATURE ( °C) –55 900 920 960 980 1000 1100 1040 –15 25 45 125 3454 G16 940 1060 1080 1020 –35 5 65 85 105 VOUT = 3V VIN = 2.7V VIN = 3.6V VIN = 5.5V VIN = 4.2V ILED (mA) 100 80 85 90 900 3454 G17 75 70 60 300 500 700 200 1000 400 600 800 65 100 95 VIN = 3.6V TA = 25°C EFFICIENCY = (VOUT – VLED)ILED/VINIIN FRONT PAGE APPLICATION Maximum Regulated VOUT vs Programmed LED Current PMOS RDS(ON) vs Temperature TEMPERATURE ( °C) –55 90 120 150 180 65 85 105 300 3454 G14 –35 –15 5 25 45 125 210 240 270 MEASURED AT 500mA VIN = 2.7V VIN = 5.5V VIN = 3.6V VIN = 4.2V TEMPERATURE ( °C) –55 40 80 60 100 120 65 85 105 200 3454 G15 –35 –15 5 25 45 125 140 160 180 MEASURED AT 500mA VIN = 2.7V VIN = 5.5V VIN = 3.6V VIN = 4.2V |
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