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MAX1745EUB Datasheet(PDF) 5 Page - Maxim Integrated Products |
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MAX1745EUB Datasheet(HTML) 5 Page - Maxim Integrated Products |
5 / 14 page High-Voltage, Step-Down DC-DC Controller in µMAX _______________________________________________________________________________________ 5 100 0 0.0001 0.001 0.01 0.1 1 10 EFFICIENCY vs. LOAD CURRENT (VOUT = +3.3V) 20 LOAD CURRENT (A) 40 60 80 A: VIN = +5.5V B: VIN = +12.0V C: VIN = +24.0V D: VIN = +36.0V C D B A 100 0 0.0001 0.001 0.01 0.1 1 10 EFFICIENCY vs. LOAD CURRENT (VOUT = +5.0V) 20 LOAD CURRENT (A) 40 60 80 A: VIN = +7.2V B: VIN = +12.0V C: VIN = +24.0V D: VIN = +36.0V B A D C 80 85 90 95 100 105 110 0 10203040 IN PIN QUIESCENT CURRENT vs. INPUT VOLTAGE (5.5V TO 36V) INPUT VOLTAGE (V) 0 1 4 5 6 3.5 4.5 5.5 IN PIN QUIESCENT CURRENT vs. INPUT VOLTAGE (3.5V TO 5.5V) INPUT VOLTAGE (V) 2 3 VOUT = 3.3V 0 60 40 20 80 120 100 140 0 10203040 SWITCHING FREQUENCY vs. INPUT VOLTAGE INPUT VOLTAGE (V) VOUT = 3.3V IOUT = 2.0A IN PIN QUIESCENT CURRENT vs. TEMPERATURE TEMPERATURE ( °C) 100 75 25 50 0 -25 86 87 88 89 90 91 92 93 94 95 85 -50 125 0 40 20 60 100 80 120 0 1000 2000 3000 4000 5000 EXT RISE AND FALL TIMES vs. CAPACITANCE CAPACITANCE (pF) VIN = +5V tFALL tRISE EXT RISE AND FALL TIMES vs. TEMPERATURE TEMPERATURE ( °C) 100 75 25 50 0 -25 5 10 15 20 25 30 35 40 45 50 0 -50 125 tRISE tFALL VIN = +5V CL = 1000pF CURRENT-SENSE TRIP LEVEL vs. TEMPERATURE TEMPERATURE ( °C) 100 75 50 25 0 -25 90 95 100 105 110 115 85 -50 125 Typical Operating Characteristics (Circuit of Figure 1, TA = +25°C, unless otherwise specified.) |
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