Datasheet LT3751 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | High Voltage Capacitor Charger Controller with Regulation |
| Pages / Page | 34 / 3 — ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply … |
| File Format / Size | PDF / 651 Kb |
| Document Language | English |
ELECTRICAL CHARACTERISTICS. The. denotes the specifications which apply over the full operating
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LT3751
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 5.5 8 mA Not Switching, CHARGE = 0.3V 0 1 µA RVTRANS, RDCM Quiescent Current (Note 4) Not Switching, CHARGE = 5V l 35 40 45 µA Not Switching, CHARGE = 0.3V 0 1 µA RVOUT Quiescent Current (Note 4) Not Switching, CHARGE = 5V l 42 47 52 µA Not Switching, CHARGE = 0.3V 0 1 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 425 µA CHARGE = 5V 60 µA CHARGE = 0V 1 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 at RBG Pin l 0.955 0.98 1.005 V VOUT Comparator Overdrive 2µs Pulse Width, 20 40 mV RVTRANS, RVOUT = 25kΩ RBG = 0.83kΩ DCM Comparator Trip Voltage Measured as VDRAIN – VTRANS, RDCM = 25kΩ, VCC = 4.75V 350 600 900 mV (Note 5) Current Limit Comparator Trip Voltage FB Pin = 0V l 100 106 112 mV FB Pin = 1.3V l 7 11 15 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 (Note 7) 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 3751fd For more information www.linear.com/LT3751 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
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 5.5 8 mA Not Switching, CHARGE = 0.3V 0 1 µA RVTRANS, RDCM Quiescent Current (Note 4) Not Switching, CHARGE = 5V l 35 40 45 µA Not Switching, CHARGE = 0.3V 0 1 µA RVOUT Quiescent Current (Note 4) Not Switching, CHARGE = 5V l 42 47 52 µA Not Switching, CHARGE = 0.3V 0 1 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 425 µA CHARGE = 5V 60 µA CHARGE = 0V 1 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 at RBG Pin l 0.955 0.98 1.005 V VOUT Comparator Overdrive 2µs Pulse Width, 20 40 mV RVTRANS, RVOUT = 25kΩ RBG = 0.83kΩ DCM Comparator Trip Voltage Measured as VDRAIN – VTRANS, RDCM = 25kΩ, VCC = 4.75V 350 600 900 mV (Note 5) Current Limit Comparator Trip Voltage FB Pin = 0V l 100 106 112 mV FB Pin = 1.3V l 7 11 15 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 (Note 7) 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 3751fd For more information www.linear.com/LT3751 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
