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LT8393EUFDM Datasheet(PDF) 5 Page - Analog Devices |
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LT8393EUFDM Datasheet(HTML) 5 Page - Analog Devices |
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5 / 32 page  LT8393 5 Rev. A For more information www.analog.com SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS Error Amplifier Full Scale LED Current Regulation V(ISP-ISN) VCTRL = 2V, VISP = 12V VCTRL = 2V, VISP = 0V l l 96 96 100 100 104 104 mV mV 1/2 LED Current Regulation V(ISP-ISN) VCTRL = 0.75V, VISP = 12V VCTRL = 0.75V, VISP = 0V l l 47 47 50 50 53 53 mV mV 1/20th LED Current Regulation V(ISP-ISN) VCTRL = 0.30V, VISP = 12V VCTRL = 0.30V, VISP = 0V l l 3 3 5 5 7 7 mV mV ISP/ISN Input Common Mode Range l 0 100 V ISP Input Bias Current VPWM = 5V, VISP = VISN = 12V VPWM = 5V, VISP = VISN = 0V VEN/UVLO = 0V, VISP = VISN = 12V or 0V 23 –10 0 µA µA µA ISN Input Bias Current VPWM = 5V, VISP = VISN = 12V VPWM = 5V, VISP = VISN = 0V VEN/UVLO = 0V, VISP = VISN = 12V or 0V 23 –10 0 µA µA µA LED Current Regulation Amplifier gm 1700 µS FB Regulation Voltage VC = 1.2V l 0.98 1.00 1.02 V FB Voltage Regulation Amplifier gm 615 µS FB Input Bias Current FB in Regulation, Current Out of Pin 20 40 nA VC Output Impedance 15 MΩ VC Standby Leakage Current VC = 1.2V, PWM Dimming Off –10 0 10 nA Current Comparator Maximum Current Sense Threshold V(LSP-LSN) Buck, VFB = 0.8V Boost, VFB = 0.8V l l 34 38 48 48 62 58 mV mV Fault FB Overvoltage Threshold (VFB) Rising 1.03 1.05 1.07 V FB Overvoltage Hysteresis 15 25 35 mV FB Open LED Threshold (VFB) Rising, V(ISP-ISN) = 0V 0.93 0.95 0.97 V FB Open LED Hysteresis V(ISP-ISN) = 0V 35 50 65 mV FB Short LED Threshold (VFB) Falling 0.24 0.25 0.26 V FB Short LED Hysteresis Hysteresis 35 50 65 mV ISP/ISN Over Current Threshold V(ISP-ISN) VISP = 12V 750 mV ISP/ISN Open LED Threshold V(ISP-ISN) Falling, VFB = 1.0V 7 10 13 mV ISP/ISN Open LED Hysteresis VFB = 1.0V 3 5 7 mV FAULT Pull-Down Resistance 100 200 Ω SS Hard Pull-Down Resistance VEN/UVLO = 1.1V 100 200 Ω SS Pull-Up Current VFB = 0.8V, VSS = 0V 10 12.5 15 µA SS Pull-Down Current VFB = 1.0V, VSS = 2V 1 1.25 1.5 µA SS Fault Latch-Off Threshold Falling 1.7 V SS Fault Reset Threshold 0.2 V ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 2). VIN = 12V, VEN/UVLO = 1.5V unless otherwise noted. |
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