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LT3751EUFD Datasheet(PDF) 3 Page - Linear Technology |
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LT3751EUFD Datasheet(HTML) 3 Page - Linear Technology |
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3 / 28 page  LT3751 3 3751f ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C. VCC = CHARGE = 5V, CLAMP = 0V, unless otherwise noted. Individual 25kΩ resistors tied from 5V VTRANS supply to RVTRANS, RVOUT, RDCM, unless otherwise noted. (Note 2) PARAMETER CONDITIONS MIN TYP MAX UNITS VCC Voltage l 4.75 24 V RVTRANS Voltage (Note 3) l 4.75 65 V VCC Quiescent Current Not Switching, CHARGE = 5V Not Switching, CHARGE = 0.3V 5.5 0 8 1 mA μA RVTRANS, RDCM Quiescent Current (Note 4) Not Switching, CHARGE = 5V Not Switching, CHARGE = 0.3V l 35 40 0 45 1 μA μA RVOUT Quiescent Current (Note 4) Not Switching, CHARGE = 5V Not Switching, CHARGE = 0.3V l 42 47 0 52 1 μA μA UVLO1, UVLO2, OVLO1, OVLO2 Clamp Voltage Measured at 1mA into Pin, CHARGE = 0V 55 V RVTRANS, RVOUT, RDCM Clamp Voltage Measured at 1mA into Pin, CHARGE = 0V 60 V CHARGE Pin Current CHARGE = 24V CHARGE = 5V CHARGE = 0V 425 60 1 μA μA μA CHARGE Minimum Enable Voltage l 1.5 V CHARGE Maximum Disable Voltage IVCC ≤ 1μA l 0.3 V Minimum CHARGE Pin Low Time 20 μs One-Shot Clock Period l 32 38 44 μs VOUT Comparator Trip Voltage Measured RBG at Pin l 0.955 0.98 1.005 V VOUT Comparator Overdrive 2μs Pulse Width, RVTRANS, RVOUT = 25kΩ RBG = 0.83kΩ 20 40 mV DCM Comparator Trip Voltage Measured as VDRAIN – VTRANS, RDCM = 25kΩ (Note 5) 350 600 900 mV Current Limit Comparator Trip Voltage FB Pin = 0V FB Pin = 1.3V l l 100 7 106 11 112 15 mV mV FB Pin Bias Current Current Sourced from FB Pin, Measured at FB Pin Voltage 64 300 nA FB Pin Voltage (Note 6) l 1.19 1.22 1.25 V FB Pin Charge Mode Threshold 1.12 1.16 1.2 V FB Pin Charge Mode Hysteresis 55 mV FB Pin Overvoltage Mode Threshold 1.29 1.34 1.38 V FB Pin Overvoltage Hysteresis 60 mV DONE Output Signal High 100kΩ to 5V 5 V DONE Output Signal Low 100kΩ to 5V 40 200 mV DONE Leakage Current DONE = 5V 5 200 nA FAULT Output Signal High 100kΩ to 5V 5 V FAULT Output Signal Low 100kΩ to 5V 40 200 mV FAULT Leakage Current FAULT = 5V 5 200 nA UVLO1 Pin Current UVLO1 Pin Voltage = 1.24V l 48.5 50 51.5 μA UVLO2 Pin Current UVLO2 Pin Voltage = 1.24V l 48.5 50 51.5 μA OVLO1 Pin Current OVLO1 Pin Voltage = 1.24V l 48.5 50 51.5 μA OVLO2 Pin Current OVLO2 Pin Voltage = 1.24V l 48.5 50 51.5 μA |
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