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LTC4269-1 Datasheet(PDF) 3 Page - Linear Technology |
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LTC4269-1 Datasheet(HTML) 3 Page - Linear Technology |
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3 / 44 page  LTC4269-1 3 42691fb ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. PARAMETER CONDITIONS MIN TYP MAX UNITS Interface Controller (Note 4) Operating Input Voltage Signature Range Classification Range ON Voltage OFF Voltage Overvoltage Lockout At VPORTP (Note 5) l l l l 1.5 12.5 30.0 71 60 9.8 21 37.2 V V V V V V ON/OFF Hysteresis Window l 4.1 V Signature/Class Hysteresis Window l 1.4 V Reset Threshold State Machine Reset for 2-Event Classification l 2.57 5.40 V Supply Current Supply Current at 57V Measured at VPORTP Pin l 1.35 mA Class 0 Current VPORTP = 17.5V, No RCLASS Resistor l 0.40 mA Signature Signature Resistance 1.5V ≤ VPORTP ≤ 9.8V (Note 6) l 23.25 26 kΩ Invalid Signature Resistance, SHDN Invoked 1.5V ≤ VPORTP ≤ 9.8V, VSHDN = 3V (Note 6) l 11 kΩ Invalid Signature Resistance During Mark Event (Notes 6, 7) l 11 kΩ Classification Class Accuracy 10mA < ICLASS < 40mA, 12.5V < VPORTP < 21V (Notes 8, 9) l ±3.5 % Classification Stability Time VPORTP Pin Step to 17.5V, RCLASS = 30.9, ICLASS Within 3.5% of Ideal Value (Notes 8, 9) l 1ms Normal Operation Inrush Current VPORTP = 54V, VNEG = 3V l 60 100 180 mA Power FET On-Resistance Tested at 600mA into VNEG, VPORTP = 54V l 0.7 1.0 Ω Power FET Leakage Current at VNEG VPORTP = SHDN = VNEG = 57V l 1μA Digital Interface SHDN Input High Level Voltage l 3V SHDN Input Low Level Voltage l 0.45 V SHDN Input Resistance VPORTP = 9.8V, SHDN = 9.65V l 100 kΩ PWRGD, T2P Output Low Voltage Tested at 1mA, VPORTP = 54V. For T2P, Must Complete 2-Event Classification to See Active Low l 0.15 V PWRGD, T2P Leakage Current Pin Voltage Pulled 57V, VPORTP = VPORTN = 0V l 1μA PWRGD Output Low Voltage Tested at 0.5mA, VPORTP = 52V, VNEG = 48V, Output Voltage Is with Respect to VNEG l 0.4 V PWRGD Clamp Voltage Tested at 2mA, VNEG = 0V, Voltage with Respect to VNEG l 12 16.5 V PWRGD Leakage Current VPWRGD = 11V, VNEG = 0V, Voltage with Respect to VNEG l 1μA |
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