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LTC3545EUD-TRPBF Datasheet(PDF) 4 Page - Linear Technology |
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LTC3545EUD-TRPBF Datasheet(HTML) 4 Page - Linear Technology |
4 / 20 page LTC3545/LTC3545-1 4 35451fb Burst Mode Operation Efficiency vs Supply Voltage Supply Current vs Temperature Burst Mode Operation TYPICAL PERFORMANCE CHARACTERISTICS VREF vs Temperature at 2.25V, 3.6V, 5.5V Switching Frequency vs Supply Voltage and Temperature Load Regulation, All Channels TEMPERATURE (°C) –50 0.585 0.590 0.595 0.600 0.605 0.610 0.615 0 50 150 100 3545 G01 2.25V 3.6V 5.5V SUPPLY VOLTAGE (V) 2 1.5 2.0 2.5 3.0 34 3545 G02 56 fOSC = –40°C fOSC = 0°C fOSC = 25°C fOSC = 80°C LOAD CURRENT (mA) 0 0.6 0.8 1.2 600 3545 G03 0.4 0.2 200 400 800 0 –0.4 –0.2 1.0 CHANNEL 1 CHANNEL 2 CHANNEL 3 TA = 25°C VIN = 3.6V UNTESTED CHANNELS OFF PULSE SKIP MODE 1μs/DIV SW 2V/DIV IL 100mA/DIV VOUT 20mV/DIV 3545 G04 VIN = 3.6V VOUT = 1.8V ILOAD = 50mA fOSC = 2.25MHz SUPPLY VOLTAGE (V) 2 90 95 6 3545 G05 85 80 3 4 5 100 VOUT = 2V TA = 25°C CHANNEL 3, ALL OTHERS OFF fOSC = 2.25MHz ILOAD = 250mA TEMPERATURE (°C) 0 20 60 3545 G06 10 30 50 40 VIN = 5.5V VIN = 4.5V VIN = 3.5V VIN = 2.5V VFB3 = 0.625V ILOAD = 0mA CHANNEL 3 ONLY –50 0 50 150 100 |
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