Datasheet LT8310 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | 100VIN Forward Converter Controller |
| Pages / Page | 36 / 3 — e lecTrical characTerisTics The. denotes the specifications which apply … |
| File Format / Size | PDF / 430 Kb |
| Document Language | English |
e lecTrical characTerisTics The. denotes the specifications which apply over the full operating
Model Line for this Datasheet
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LT8310
e lecTrical characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C, VIN = 24V, UVLO = 24V, OVLO = 0V, SYNC = 0V, SENSE = 0V, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS Supply
Operating Input Voltage l 6 100 V VIN Supply Current in Shutdown UVLO = 0V 0.3 1 µA UVLO = 1.15V 5 7 µA VIN Operating Current Not Switching 3.8 4.6 mA
UVLO
UVLO Threshold Voltage UVLO Falling l 1.196 1.220 1.250 V UVLO Threshold Hysteresis UVLO Rising 40 mV UVLO Low Quiescent Current Threshold IVIN < 1µA l 0.36 0.62 0.85 V UVLO Pin Input Current UVLO = 1.15V 4.5 5.7 6.8 µA UVLO = 1.30V 20 150 nA
OVLO
OVLO Threshold Voltage OVLO Rising l 1.225 1.250 1.275 V OVLO Threshold Hysteresis OVLO Falling –33 mV OVLO Pin Input Current OVLO = 1.17V 10 150 nA OVLO = 1.32V 120 400 nA
Linear Regulator
INTVCC Regulation Voltage IINTVCC = 0mA to 20mA l 9.6 10.0 10.3 V Regulator Dropout Voltage (VIN – INTVCC) VIN = 9V, IINTVCC = 20mA 600 mV INTVCC Undervoltage Lockout Threshold INTVCC Falling 4.60 4.75 4.90 V INTVCC Undervoltage Hysteresis 0.45 V INTVCC Overvoltage Lockout Threshold INTVCC Rising 17.0 17.4 17.8 V INTVCC Overvoltage Hysteresis –0.65 V INTVCC Current Limit VIN = 12V l 25 33 39 mA INTVCC Current in Shutdown UVLO = 0V, INTVCC = 10V 125 µA INTVCC Line Regulation 10.8V ≤ VIN ≤ 100V 0.001 0.01 %/V INTVCC Load Regulation 0mA ≤ IINTVCC ≤ 20mA –3.0 –0.4 %
Duty Cycle Control
Minimum GATE On-Time 190 ns Maximum Duty Cycle VIN = 12V l 75 78 82 % RDVIN Pin Input Current l 19.7 20.0 20.3 µA Duty Control Transconductance (Note 6) VSET = 1V 22.5 25.0 27.5 µA/V (ΔIDFILT/ΔVSET) Duty Mode Control Gain (Notes 6, 7), VSET = 0.5V to 6V l 11.76 12.00 12.24 V/V Gain = VIN/VSET at IDFILT = 0µA Duty Cycle Foldback, SS = 1.15V 0.14 %/% Foldback = Duty at VSS = 1.15V/Duty (Nom)
Error Amplifier
FBX Error Amp Reference Voltage FBX > 0V l 1.568 1.600 1.632 V FBX < 0V l –0.820 –0.800 –0.780 V FBX Overvoltage Threshold FBX > 0V 6 7.5 9 % FBX < 0V 5.5 7.5 10 % 8310f For more information www.linear.com/LT8310 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Timing Diagrams Operation Applications Information Typical Applications Package Description Typical Application Related Parts
e lecTrical characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C, VIN = 24V, UVLO = 24V, OVLO = 0V, SYNC = 0V, SENSE = 0V, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS Supply
Operating Input Voltage l 6 100 V VIN Supply Current in Shutdown UVLO = 0V 0.3 1 µA UVLO = 1.15V 5 7 µA VIN Operating Current Not Switching 3.8 4.6 mA
UVLO
UVLO Threshold Voltage UVLO Falling l 1.196 1.220 1.250 V UVLO Threshold Hysteresis UVLO Rising 40 mV UVLO Low Quiescent Current Threshold IVIN < 1µA l 0.36 0.62 0.85 V UVLO Pin Input Current UVLO = 1.15V 4.5 5.7 6.8 µA UVLO = 1.30V 20 150 nA
OVLO
OVLO Threshold Voltage OVLO Rising l 1.225 1.250 1.275 V OVLO Threshold Hysteresis OVLO Falling –33 mV OVLO Pin Input Current OVLO = 1.17V 10 150 nA OVLO = 1.32V 120 400 nA
Linear Regulator
INTVCC Regulation Voltage IINTVCC = 0mA to 20mA l 9.6 10.0 10.3 V Regulator Dropout Voltage (VIN – INTVCC) VIN = 9V, IINTVCC = 20mA 600 mV INTVCC Undervoltage Lockout Threshold INTVCC Falling 4.60 4.75 4.90 V INTVCC Undervoltage Hysteresis 0.45 V INTVCC Overvoltage Lockout Threshold INTVCC Rising 17.0 17.4 17.8 V INTVCC Overvoltage Hysteresis –0.65 V INTVCC Current Limit VIN = 12V l 25 33 39 mA INTVCC Current in Shutdown UVLO = 0V, INTVCC = 10V 125 µA INTVCC Line Regulation 10.8V ≤ VIN ≤ 100V 0.001 0.01 %/V INTVCC Load Regulation 0mA ≤ IINTVCC ≤ 20mA –3.0 –0.4 %
Duty Cycle Control
Minimum GATE On-Time 190 ns Maximum Duty Cycle VIN = 12V l 75 78 82 % RDVIN Pin Input Current l 19.7 20.0 20.3 µA Duty Control Transconductance (Note 6) VSET = 1V 22.5 25.0 27.5 µA/V (ΔIDFILT/ΔVSET) Duty Mode Control Gain (Notes 6, 7), VSET = 0.5V to 6V l 11.76 12.00 12.24 V/V Gain = VIN/VSET at IDFILT = 0µA Duty Cycle Foldback, SS = 1.15V 0.14 %/% Foldback = Duty at VSS = 1.15V/Duty (Nom)
Error Amplifier
FBX Error Amp Reference Voltage FBX > 0V l 1.568 1.600 1.632 V FBX < 0V l –0.820 –0.800 –0.780 V FBX Overvoltage Threshold FBX > 0V 6 7.5 9 % FBX < 0V 5.5 7.5 10 % 8310f For more information www.linear.com/LT8310 3 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Timing Diagrams Operation Applications Information Typical Applications Package Description Typical Application Related Parts
