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LT4220IGN Datasheet(PDF) 3 Page - Linear Technology |
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LT4220IGN Datasheet(HTML) 3 Page - Linear Technology |
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3 / 16 page  3 LT4220 4220f SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS IINFB+ FB+ Input Current FB+ = 3V q 0.09 ±1 µA IINFB– FB– Input Current FB– = –3V q 0.08 ±1 µA ∆VFB+H FB+ PWRGD Threshold Line Regulation VCC = 2.7V, VEE = –2.7V to VCC = 16.5V, VEE = –16.5V q 0.015 0.15 mV/V ∆VFB–H FB– PWRGD Threshold Line Regulation VCC = 2.7V, VEE = –2.7V to VCC = 16.5V, VEE = –16.5V q 0.05 0.5 mV/V VSENSE+ SENSE+ Trip Voltage (VCC – VSENSE+)VFB+ = 0V, GATE + – 0.5V q 615 22 mV VFB+ = 1V, GATE+ – 0.5V 36 48 60 mV VSENSE– SENSE– Trip Voltage (VSENSEK – VSENSE–)VFB– = 0V, GATE– – 0.5V q –10 –15 –22 mV VFB– = –1V, GATE– – 0.5V –43 –52 –61 mV IGATEUP+ GATE+ Pull-Up Current Charge Pump On, VGATE+ = 7V q –9 –13 –17 µA IGATEUP– GATE– Pull-Up Current VGATE– = –3V q –6 –10 –14 µA IGATEDN+ GATE+ Pull-Down Current Any Fault Condition, VGATE+ = 1V q 20 40 60 mA IGATEDN– GATE– Pull-Down Current Any Fault Condition, VGATE– = VEE + 4V q 30 70 130 mA ∆VGATE+ External N-Channel GATE+ Drive VGATE+ – VCC, VCC = 2.7V, VEE = –2.7V q 3.5 4 6 V VCC = 5V to 16.5V, VEE = –5V to –16.5V 5 6.5 8 V ∆VGATE– External N-Channel GATE– Drive VGATE– – VEE, VCC = 2.7V, VEE = –2.7V q 3.5 5.2 6 V VCC = 5V to 16.5V, VEE = –5V to –16.5V 7.5 8.5 9 V VTIMERH TIMER High Threshold, Sets FAULT q 1.22 1.24 1.26 V VTIMERL TIMER Low Threshold, Allows Restart q 0.4 0.5 0.6 V ITIMERUP TIMER Pull-Up Current TIMER = 0V q –40 –65 –85 µA ITIMERDN TIMER Pull-Down Current TIMER = 1V q 2 3.3 4.5 µA ITIMER(R) TIMER Current Ratio ITIMERDN/ITIMERUP 57 % VOL PWRGD Output Low Voltage IO = 2mA q 0.3 V IO = 5mA 0.5 V IOH PWRGD Leakage Current VPWRGD = 16.5V q 0.1 2 µA VFOL FAULT Output Low Voltage IO = 2mA q 0.3 V IO = 5mA 0.5 V IFPH FAULT Leakage Current VFAULT = 16.5V q 0.06 2 µA VTRKTHR TRACK Input Threshold q 0.3 0.8 1.1 V ITRK TRACK Input Current TRACK = 16.5V q 0.05 2 µA VTRKFB+ TRACK Mode FB+ Threshold IGATE+ = 0µA, TRACK = VCC (Note 3) q 40 70 mV VTRKFB– TRACK Mode FB– Threshold IGATE– = 0µA, TRACK = VCC (Note 3) q 40 80 mV DC ELECTRICAL CHARACTERISTICS The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VCC = 5V, VEE = –5V, unless otherwise noted. |
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