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LTC3548 Datasheet(PDF) 4 Page - Linear Technology |
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LTC3548 Datasheet(HTML) 4 Page - Linear Technology |
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4 / 16 page  LTC3548 4 3548fa TYPICAL PERFORMANCE CHARACTERISTICS 2.5 2.4 2.3 2.2 2.1 2.0 10 8 6 4 2 0 –2 –4 –6 –8 –10 SUPPLY VOLTAGE (V) 2 3548 G06 3 45 6 INPUT VOLTAGE (V) 2 3548 G04 3 45 6 TEMPERATURE (°C) –50 25 75 3548 G05 –25 0 50 100 125 100 95 90 85 80 75 70 65 60 VOUT = 1.8V, CHANNEL 1 Burst Mode OPERATION CIRCUIT OF FIGURE 3 800mA 10mA 100mA 1mA VIN = 3.6V VIN (V) 2 0.5 0.4 0.3 0.2 0.1 0 –0.1 –0.2 –0.3 –0.4 –0.5 4 6 3548 G15 35 VOUT = 1.8V IOUT = 200mA TA = 25°C VIN (V) 1 500 450 400 350 300 250 200 46 3548 G08 2 3 57 MAIN SWITCH SYNCHRONOUS SWITCH 0.615 0.610 0.605 0.600 0.595 0.590 0.585 JUNCTION TEMPERATURE (°C) –50 550 500 450 400 350 300 250 200 150 100 25 75 3548 G09 –25 0 50 100 150 125 TEMPERATURE (°C) –50 25 75 3548 G07 –25 0 50 100 125 MAIN SWITCH SYNCHRONOUS SWITCH VIN = 3.6V VIN = 3.6V VIN = 4.2V VIN = 2.7V TA = 25°C LOAD CURRENT (mA) 1 100 95 90 85 80 75 70 65 60 10 100 1000 3548 G11 VIN = 3.6V, VOUT = 1.8V NO LOAD ON OTHER CHANNEL CHANNEL 1; CIRCUIT OF FIGURE 3 LOAD CURRENT (mA) 1 2.0 1.5 1.0 0.5 0 –0.5 –1.0 –1.5 –2.0 10 100 1000 3548 G12 Burst Mode OPERATION Burst Mode OPERATION PULSE SKIP MODE PULSE SKIP MODE VIN = 3.6V, VOUT = 1.8V NO LOAD ON OTHER CHANNEL CHANNEL 1; CIRCUIT OF FIGURE 3 Efficiency vs Input Voltage Oscillator Frequency vs Supply Voltage Oscillator Frequency vs Temperature Efficiency vs Load Current Load Regulation Line Regulation Reference Voltage vs Temperature RDS(ON) vs Input Voltage RDS(ON) vs Junction Temperature TA = 25°C unless otherwise specified. |
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