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LTC1433IGN Datasheet(PDF) 4 Page - Linear Technology |
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LTC1433IGN Datasheet(HTML) 4 Page - Linear Technology |
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4 / 20 page  4 LTC1433/LTC1434 TYPICAL PERFORMANCE CHARACTERISTICS LOAD CURRENT (A) 0.001 60 70 80 0.01 0.1 1 1433/34 G01 50 40 100 90 VIN = 5V VIN = 12V VIN = 3.6V VOUT = 3.3V L = 22 µH CSOC = 47pF Efficiency of Figure 1 for L = 22 µH SUPPLY VOLTAGE (V) 3.2 3.0 3.2 3.4 4.8 1433/34 G03 2.8 2.6 2.9 3.1 3.3 2.7 2.5 2.4 3.6 4.0 4.4 3.4 5.0 3.8 4.2 4.6 5.2 VPROG = 0V L = 20 µH COSC = 50pF IOUT 300mA IOUT 400mA IOUT 500mA Dropout Characteristics at Different Load Currents (VOUT = 3.3V) SUPPLY VOLTAGE (V) 3 360 380 400 420 440 57 9 11 1433/34 G02 460 480 46 8 10 Supply Current vs Supply Voltage Dropout Characteristics at Different Load Currents (VOUT = 5V) Maximum Output Current vs Input Supply SUPPLY VOLTAGE (V) 4.6 4.8 5.0 5.2 5.4 5.6 5.8 6.0 6.2 4.7 4.8 4.9 1433/34 G04 4.6 4.5 4.2 4.3 4.4 5.1 5.0 IOUT 200mA IOUT 400mA IOUT 300mA VPROG = VIN L = 20 µH COSC = 50pF SUPPLY VOLTAGE (V) 3 500 600 700 800 11 1433/34 G05 400 300 200 5 7 9 13 VOUT 3.3V VOUT 5V L = 22 µH COSC = 50pF Reference Voltage vs Temperature TEMPERATURE ( °C) –45 1.186 1.194 115 1433/34 G06 1.178 1.170 –5 35 75 –25 15 55 95 1.202 1.182 1.190 1.174 1.198 SUPPLY VOLTAGE (V) 3 6 8 11 1433/34 G07 4 2 5 7 3 1 0 5 7 9 412 6 8 10 13 TA = 25°C TA = 70°C TA = 0°C Switch Resistance of Small FET Switch Leakage Current vs Temperature TEMPERATURE ( °C) 0 40 50 70 60 100 1433/34 G09 30 20 20 40 80 120 140 10 0 60 160 200 280 120 80 40 0 240 VIN = 13.5V SSW PIN BSW PIN Switch Resistance of Big FET SUPPLY VOLTAGE (V) 3 1.2 1.6 2.0 11 1433/34 G08 0.8 0.4 0 1.4 1.8 1.0 0.6 0.2 5 7 9 412 6 8 10 13 TA = 70°C TA = 0°C TA = 25°C |
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