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LTC3548AEDD Datasheet(PDF) 5 Page - Linear Technology |
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LTC3548AEDD Datasheet(HTML) 5 Page - Linear Technology |
5 / 20 page LTC3548A 5 3548af TYPICAL PERFORMANCE CHARACTERISTICS Reference Voltage vs Temperature RDS(ON) vs Input Voltage RDS(ON) vs Temperature Efficiency vs Load Current Efficiency vs Load Current Load Regulation Efficiency vs Load Current Efficiency vs Load Current Line Regulation TA = 25°C unless otherwise specified. 0.615 0.610 0.605 0.600 0.595 0.590 0.585 TEMPERATURE (°C) –50 25 75 3548A G08 –25 0 50 100 125 VIN = 3.6V VIN (V) 1 500 450 400 350 300 250 200 46 3548A G09 2 3 57 MAIN SWITCH SYNCHRONOUS SWITCH TEMPERATURE (°C) –50 550 500 450 400 350 300 250 200 150 100 25 75 3548A G10 –25 0 50 100 150 125 MAIN SWITCH SYNCHRONOUS SWITCH VIN = 3.6V VIN = 4.2V VIN = 2.7V LOAD CURRENT (mA) 1 0 30 20 10 70 60 50 40 100 90 80 10 100 1000 3548A G11 2.7V VOUT = 2.5V Burst Mode OPERATION FIGURE 3 CIRCUIT 3.3V 4.2V LOAD CURRENT (mA) 1 0 30 20 10 70 60 50 40 100 90 80 10 100 1000 3548A G12 Burst Mode OPERATION PULSE-SKIPPING MODE VIN = 3.6V VOUT = 1.8V NO LOAD ON OTHER CHANNEL LOAD CURRENT (mA) 1 –4 –3 1 0 –1 –2 4 3 2 10 100 1000 3548A G13 Burst Mode OPERATION PULSE-SKIPPING MODE VIN = 3.6V VOUT = 1.8V NO LOAD ON OTHER CHANNEL LOAD CURRENT (mA) 1 0 30 20 10 70 60 50 40 100 90 80 10 100 1000 3548A G14 2.7V 4.2V VOUT = 1.2V Burst Mode OPERATION 3.3V LOAD CURRENT (mA) 1 0 30 20 10 70 60 50 40 100 90 80 10 100 1000 3548A G15 2.7V 4.2V VOUT = 1.5V Burst Mode OPERATION 3.3V 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 3548A G16 35 VOUT = 1.8V IOUT = 200mA |
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