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LT1640AH Datasheet(PDF) 3 Page - Linear Technology |
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LT1640AH Datasheet(HTML) 3 Page - Linear Technology |
3 / 16 page 3 LT1640AL/LT1640AH The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 2), VDD = 48V, VEE = 0V unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VPG Power Good Threshold VDRAIN – VEE, High to Low Transition 1.1 1.4 2.0 V VPGHY Power Good Threshold Hysteresis 0.4 V IDRAIN Drain Input Bias Current VDRAIN = 48V q 10 50 500 µA VOL PWRGD Output Low Voltage PWRGD (LT1640AL), (VDRAIN – VEE) < VPG IOUT = 1mA q 0.48 0.8 V IOUT = 5mA 1.50 3.0 V PWRGD Output Low Voltage PWRGD (LT1640AH), VDRAIN = 5V (PWRGD – DRAIN) IOUT = 1mA q 0.75 1.0 V IOH Output Leakage PWRGD (LT1640AL), VDRAIN =48V, q 0.05 10 µA VPWRGD = 80V ROUT Power Good Output Impedance PWRGD (LT1640AH), (VDRAIN – VEE) < VPG q 2 6.5 k Ω (PWRGD to DRAIN) AC tPHLOV OV High to GATE Low Figures 1, 2 1.7 µs tPHLUV UV Low to GATE Low Figures 1, 3 1.5 µs tPLHOV OV Low to GATE High Figures 1, 2 5.5 µs tPLHUV UV High to GATE High Figures 1, 3 6.5 µs tPHLSENSE SENSE High to Gate Low Figures 1, 4 2 3 4 µs tPHLPG DRAIN Low to PWRGD Low (LT1640AL) Figures 1, 5 0.5 µs DRAIN Low to (PWRGD – DRAIN) High (LT1640AH) Figures 1, 5 0.5 µs tPLHPG DRAIN High to PWRGD High (LT1640AL) Figures 1, 5 0.5 µs DRAIN High to (PWRGD – DRAIN) Low (LT1640AH) Figures 1, 5 0.5 µs Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: All currents into device pins are positive; all currents out of device pins are negative. All voltages are referenced to VEE unless otherwise specified. SUPPLY VOLTAGE (V) 0 1.3 1.4 1.5 60 100 1640A G01 1.2 1.1 0 20 40 80 1.6 1.7 1.8 TA = 25°C Supply Current vs Supply Voltage TEMPERATURE ( °C) –50 – 25 1.0 1.1 1.2 1.3 1.4 1.6 025 50 75 1640A G02 100 1.5 VDD = 48V Supply Current vs Temperature SUPPLY VOLTAGE (V) 0 6 7 9 10 11 40 80 100 15 1640A G03 8 20 60 12 13 14 TA = 25°C Gate Voltage vs Supply Voltage TYPICAL PERFOR A CE CHARACTERISTICS ELECTRICAL CHARACTERISTICS |
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