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LTC4253IGN Datasheet(PDF) 3 Page - Linear Technology |
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LTC4253IGN Datasheet(HTML) 3 Page - Linear Technology |
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3 / 32 page  LTC4253 3 4253f IGATE GATE Pin Output Current UV = OV = 4V, VSENSE = VEE, q 30 50 70 µA VGATE = 0V (Sourcing) UV = OV = 4V, VSENSE – VEE = 0.15V, 17 mA VGATE = 3V (Sinking) UV = OV = 4V, VSENSE – VEE = 0.3V, 190 mA VGATE = 1V (Sinking) VGATE External MOSFET Gate Drive VGATE – VEE, IIN = 2mA q 10 12 VZ V VGATEL Gate Low Threshold (Before Gate Ramp Up) 0.5 V VGATEH Gate High Threshold VGATEH = VIN – VGATE, 2.8 V For PWRGD1, PWRGD2, PWRGD3 Status VUVHI UV Pin Threshold HIGH q 3.075 3.225 3.375 V VUVLO UV Pin Threshold LOW q 2.775 2.925 3.075 V VUVHST UV Pin Hysteresis 0.3 V VOVHI OV Pin Threshold HIGH q 5.85 6.15 6.45 V VOVLO OV Pin Threshold LOW q 5.55 5.85 6.15 V VOVHST OV Pin Hysteresis 0.3 V ISENSE SENSE Pin Input Current UV = 0V = 4V, VSENSE = 50mV q –30 –15 µA IINP UV,OV Pin Input Current UV = OV = 4V q ±0.1 ±10 µA VTMRH TIMER Pin Voltage High Threshold 4V VTMRL TIMER Pin Voltage Low Threshold 1V ITMR TIMER Pin Current Timer On (Initial Cycle/Latchoff, Sourcing), VTMR = 2V 5 µA Timer Off (Initial Cycle, Sinking), VTMR = 2V 28 mA Timer On (Circuit Breaker, Sourcing, 200 µA IDRN = 0µA), VTMR = 2V Timer On (Circuit Breaker, Sourcing, 600 µA IDRN = 50µA), VTMR = 2V Timer Off (Circuit Breaker, Sinking), VTMR = 2V 5 µA ITMRACC (ITMR at IDRN = 50µA – ITMR at IDRN = 0µA) Timer On (Circuit Breaker with IDRN = 50µA) 8 µA/µA IDRN 50 µA VSQTMRH SQTIMER Pin Voltage High Threshold 4 V VSQTMRL SQTIMER Pin Voltage Low Threshold 0.33 V ISQTMR SQTIMER Pin Current SQTIMER On (Power Good Sequence, Sourcing), 5 µA VSQTMR = 2V SQTIMER On (Power Good Sequence, Sinking), 28 µA VSQTMR = 2V VDRNL DRAIN Pin Voltage Low Threshold For PWRGD1, PWRGD2, PWRGD3 Status 2.385 V IDRNL DRAIN Leakage Current VDRAIN = 5V ±0.1 ±1 µA VDRNCL DRAIN Pin Clamp Voltage IDRN = 50µA7 V VPGL PWRGD1, PWRGD2, PWRGD3 IPG = 1.6mA q 0.25 0.4 V Output Low Voltage IPG = 5mA q 1.2 V IPGH PWRGD1, PWRGD2, PWRGD3 VPG = 0V q 30 50 70 µA Output High Current SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 2) |
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