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LT8393EUFDM Datasheet(PDF) 4 Page - Analog Devices |
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LT8393EUFDM Datasheet(HTML) 4 Page - Analog Devices |
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4 / 32 page  LT8393 4 Rev. A For more information www.analog.com ELECTRICAL CHARACTERISTICS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIN Operating Voltage Range l 4 60 V VIN Quiescent Current VEN/UVLO = 0.3V VEN/UVLO = 1.1V Not Switching 1 270 2.4 2 4 µA µA mA VOUT Voltage Range l 0 100 V VOUT Quiescent Current VEN/UVLO = 0.3V, VOUT = 12V Not Switching, VOUT = 12V 30 0.1 50 0.5 70 µA µA Linear Regulators INTVCC Regulation Voltage IINTVCC = 20mA 4.85 5.0 5.15 V INTVCC Current Limit VINTVCC = 4.5V 110 150 190 mA INTVCC Undervoltage Lockout Threshold Falling 3.44 3.54 3.64 V INTVCC Undervoltage Lockout Hysteresis 0.24 V VREF Regulation Voltage IVREF = 100µA l 1.96 2.00 2.04 V VREF Current Limit VREF = 1.8V 2 2.5 3.2 mA VREF Undervoltage Lockout Threshold Falling 1.78 1.84 1.90 V VREF Undervoltage Lockout Hysteresis 50 mV Control Inputs/Outputs EN/UVLO Shutdown Threshold l 0.3 0.6 1.0 V EN/UVLO Enable Threshold Falling l 1.196 1.220 1.244 V EN/UVLO Enable Hysteresis 13 mV EN/UVLO Hysteresis Current VEN/UVLO = 1.1V VEN/UVLO = 1.3V 2.1 –0.1 2.5 0 2.9 0.1 µA µA CTRL Input Bias Current VCTRL = 0.75V, Current Out of Pin 0 20 50 nA CTRL Dim-Off Threshold Falling l 180 200 220 mV CTRL Dim-Off Hysteresis 28 mV PWM Dimming External PWM Dimming Threshold Rising, RP = 30k l 1.3 1.4 1.5 V External PWM Dimming Hysteresis RP = 30k 220 mV Internal PWM Dimming Duty Cycle VPWM = 1V, RP ≥ 51k VPWM = 1.5V, RP ≥ 51k VPWM = 2V, RP ≥ 51k 47 97 3 53 % % % Switching Frequency to Internal PWM Dimming Frequency Ratio RP = 51k RP = 82k RP = 130k RP = 200k RP = 300k 1024 2048 4096 8192 16384 Minimum VOUT for PWMTG to be On PWM Dimming On 2.4 4 V PWMTG On Voltage V(VOUT-PWMTG) VOUT = 12V 8.5 10 11.5 V PWMTG Off Voltage V(VOUT-PWMTG) VOUT = 12V –0.1 0 0.1 V PWM to PWMTG Turn On Propagation Delay CPWMTG = 3.3nF to VOUT, 50% to 50% 180 ns PWM to PWMTG Turn Off Propagation Delay CPWMTG = 3.3nF to VOUT, 50% to 50% 50 ns PWMTG Turn On Fall Time PWMTG Turn Off Rise Time CPWMTG = 3.3nF to VOUT, 10% to 90% CPWMTG = 3.3nF to VOUT, 90% to 10% 180 70 ns ns 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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