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LTC1702A Datasheet(PDF) 4 Page - Linear Technology |
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LTC1702A Datasheet(HTML) 4 Page - Linear Technology |
4 / 36 page 4 LTC1702A 1702afa TYPICAL PERFOR A CE CHARACTERISTICS Efficiency vs Load Current TEMPERATURE ( °C) –50 2.4 PVCC VCC 25 1702A G04 1.8 1.4 –25 0 50 1.2 1.0 2.6 2.2 2.0 1.6 75 100 125 BOOST1, BOOST2 TEST CIRCUIT 1 CL = 0pF Transient Response TEMPERATURE ( °C) –50 –2.5 –2.0 –1.0 –0.5 0 2.5 1.0 0 50 75 1702A G05 –1.5 1.5 2.0 0.5 –25 25 100 125 VCC = 5V TEMPERATURE ( °C) –50 0.4 0.5 0.7 0.8 0.9 1.4 1.1 0 50 75 1702A G06 0.6 1.2 1.3 1.0 –25 25 100 125 VPVCC = 5V VBOOST – VSW = 5V MOSFET Driver Supply Current vs Gate Capacitance Supply Current vs Temperature Normalized Oscillator Frequency vs Temperature Driver RON vs Temperature RUN/SS Source Current vs Temperature TEMPERATURE ( °C) –50 4.0 4.5 5.0 25 75 1702A G07 3.5 3.0 –25 0 50 100 125 2.5 2.0 VCC = 5V Nonoverlap Time vs Temperature Driver Rise/Fall vs Temperature LOAD CURRENT (A) 0 70 80 90 100 510 1702A G01 15 VIN = 5V VOUT = 3.3V VOUT = 2.5V VOUT = 1.6V VIN = 5V VOUT = 1.8V ILOAD = 0A-10A-0A ±2.2% MAX DEVIATION 1702A G02 GATE CAPACITANCE (pF) 0 25 30 35 6000 8000 1702A G03 20 15 2000 4000 10000 10 5 0 TEST CIRCUIT 1 ONE DRIVER LOADED MULTIPLY BY # OF ACTIVE DRIVERS TO OBTAIN TOTAL DRIVER SUPPLY CURRENT TEMPERATURE ( °C) –50 40 50 70 25 75 1702A G08 30 20 –25 0 50 100 125 10 0 60 TEST CIRCUIT 1 CL = 2000pF BG FALLING EDGE TG RISING EDGE TG FALLING EDGE BG RISING EDGE TEMPERATURE ( °C) –50 –25 12 12 15 0 50 75 1702A G09 11 14 13 25 100 125 TEST CIRCUIT 1 CL = 2000pF IL 20mV/DIV 10 µs/DIV |
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