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LTC3100 Datasheet(PDF) 3 Page - Linear Technology |
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LTC3100 Datasheet(HTML) 3 Page - Linear Technology |
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3 / 24 page  LTC3100 3 3100fa PARAMETER CONDITIONS MIN TYP MAX UNITS N-Channel MOSFET Switch-On Resistance VBST = 3.3V 0.3 Ω P-Channel MOSFET Switch-On Resistance VBST = 3.3V 0.4 Ω N-Channel MOSFET Current Limit l 700 850 mA Maximum Duty Cycle VFBBST = 1.15V l 87 90 % Minimum Duty Cycle VFBBST = 1.3V l 0% Switching Frequency l 1.2 1.5 1.8 MHz RUNBST Input High Voltage l 0.9 V RUNBST Input Low Voltage l 0.3 V RUNBST Input Current RUNBST = 1.2V 0.8 2 μA Soft-Start Time 0.8 ms PGBST Threshold, Falling Referenced to Feedback Voltage –8 % PGBST Hysteresis Referenced to Feedback Voltage 3 % PGBST Voltage Low 5mA Load 65 mV PGBST Leakage Current PGBST = 5.5V 0.01 10 μA ELECTRICAL CHARACTERISTICS: STEP-DOWN CONVERTER PARAMETER CONDITIONS MIN TYP MAX UNITS Input Voltage Range l 1.8 5.5 V Output Voltage Adjust Range l 0.61 5.5 V Feedback Voltage l 590 600 610 mV Feedback Input Current FBBK = 600mV 1 30 nA Quiescent Current: Shutdown Measured on VINBK, RUNBK = 0V, VINBST = 0V, VBST = 0V Not Including Switch Leakage 0.01 1 μA Quiescent Current: Active Measured on VINBK (Note 4), RUNBST = 0V 240 350 μA Quiescent Current: Burst Mode Operation Measured on VINBK, FBBK = 620mV, MODE = OPEN, RUNBST = 0V 16 30 μA N-Channel MOSFET Switch Leakage Current VINBK = SWBK = 5V 0.1 5 μA P-Channel MOSFET Switch Leakage Current SWBK = 0V, VINBK = 5V 0.1 5 μA N-Channel MOSFET Switch-On Resistance VINBK = 3.3V 0.45 Ω P-Channel MOSFET Switch-On Resistance VINBK = 3.3V 0.55 Ω P-Channel MOSFET Current Limit l 340 450 mA Maximum Duty Cycle FBBK < 590mV l 100 % Minimum Duty Cycle FBBK > 610mV l 0% Switching Frequency l 1.2 1.5 1.8 MHz The l denotes the specifications which apply over the full operating temperature range. Extended commercial grade: –40°C to 85°C, VINBK = 3.3V, TA = 25°C, unless otherwise noted. ELECTRICAL CHARACTERISTICS: STEP-UP CONVERTER The l denotes the specifications which apply over the full operating temperature range. Extended commercial grade: –40°C to 85°C, VINBST = 1.2V, VBST = 3.3V, TA = 25°C, unless otherwise noted. |
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