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LTC3454 Datasheet(PDF) 3 Page - Linear Technology |
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LTC3454 Datasheet(HTML) 3 Page - Linear Technology |
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3 / 12 page  LTC3454 3 3454f Undervoltage Lockout Threshold vs Temperature Enable Thresholds vs Temperature Enable Thresholds vs VIN ISET1,2 Servo Voltage vs Temperature LED Current Programming Ratio vs Temperature VLED vs Temperature TYPICAL PERFOR A CE CHARACTERISTICS TEMPERATURE ( °C) –55 1.4 1.5 1.7 1.8 1.9 2.4 2.1 –15 25 45 125 3454 G01 1.6 2.2 2.3 2.0 –35 5 65 85 105 VIN RISING VIN FALLING TEMPERATURE ( °C) –55 200 300 500 600 700 1200 900 –15 25 45 125 3454 G02 400 1000 1100 800 –35 5 65 85 105 VIH VIL VIN = 3.6V VIN (V) 2.7 200 300 500 600 700 1200 900 3.5 5.5 3454 G03 400 1000 1100 800 3.1 3.9 4.3 4.7 5.1 VIH TA = 25°C VIL TEMPERATURE ( °C) –55 788 792 800 804 808 –15 25 45 125 3454 G04 796 –35 5 65 85 105 812 VIN = 3.6V RISET1,2 = 15k ISET1,2 Servo Voltage vs VIN VIN (V) 2.7 804 808 812 3.9 4.7 3454 G05 800 796 3.1 3.5 4.3 5.1 5.5 792 788 TA = 25°C RISET1 = RISET2 = 15k ISET1,2 Servo Voltage vs RISET RISET (kΩ) 3 804 808 812 15 23 3454 G06 800 796 711 19 27 31 792 788 VIN = 3.6V TA = 25°C TEMPERATURE ( °C) –55 3850 3900 3950 105 3454 G07 3800 3750 3650 –15 25 65 –35 125 5 45 85 3700 4050 4000 VIN = 3.6V PROGRAMMED ILED = 1A PROGRAMMED ILED = 500mA PROGRAMMED ILED = 150mA LED Current Programming Ratio vs VIN VIN (V) 2.7 3850 3900 3950 5.1 3454 G08 3800 3750 3650 3.5 4.3 3.1 5.5 3.9 4.7 3700 4050 4000 PROGRAMMED ILED = 500mA TA = 25°C TEMPERATURE ( °C) –55 90 120 150 5 45 125 3454 G09 60 30 0 –35 –15 25 65 85 105 VIN = 3.6V PROGRAMMED ILED = 100mA PROGRAMMED ILED = 500mA PROGRAMMED ILED = 1A |
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