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LTC3788-1 Datasheet(PDF) 8 Page - Linear Technology |
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LTC3788-1 Datasheet(HTML) 8 Page - Linear Technology |
8 / 28 page LTC3788-1 8 37881f TEMPERATURE (°C) –45 5 55 80 0 80 40 160 200 240 120 20 100 60 180 220 260 140 –20 30 105 130 37881 G22 SENSE+ PIN SENSE – PIN VSENSE = 12V SENSE Pin Input Current vs Temperature Maximum Current Sense Threshold vs ITH Voltage SENSE Pin Input Current vs VSENSE Voltage SENSE Pin Input Current vs ITH Voltage Oscillator Frequency vs Input Voltage TYPICAL PERFORMANCE CHARACTERISTICS 15 510 20 25 30 35 40 INPUT VOLTAGE (V) 344 354 356 358 360 350 342 352 340 348 346 37881 G20 FREQ = GND ITH VOLTAGE (V) 0 80 120 100 0.6 1.0 37881 G21 40 0 0.2 0.4 0.8 1.2 1.4 –40 60 20 –20 –60 PULSE-SKIPPING MODE FORCED CONTINUOUS MODE Burst Mode OPERATION ITH VOLTAGE (V) 0 1 2 2.5 0 80 40 160 200 240 120 20 100 60 180 220 260 140 0.5 1.5 3 37881 G23 SENSE+ PIN SENSE – PIN VSENSE = 12V VSENSE COMMON MODE VOLTAGE (V) 2.5 17.5 27.5 32.5 0 80 40 160 200 240 120 20 100 60 180 220 260 140 7.5 12.5 22.5 37.5 37881 G24 SENSE+ PIN SENSE – PIN DUTY CYCLE (%) 0 80 100 70 60 40 20 40 10 90 30 50 80 60 100 20 0 120 37881 G25 OPERATING FREQUENCY (kHz) 50 0 20 30 80 50 250 450 550 10 60 70 40 150 350 650 750 37881 G26 T = 130°C T = 25°C T = – 45°C VSW = 12V VBOOST – VSW = 4.5V Maximum Current Sense Threshold vs Duty Cycle Charge Pump Charging Current vs Operating Frequency |
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