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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LT3797 датащи(PDF) 3 Page - Linear Technology |
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LT3797 датащи(HTML) 3 Page - Linear Technology |
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3 / 36 page  LT3797 3 3797f For more information www.linear.com/LT3797 ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 24V; EN/UVLO = 24V; CTRL1, CTRL2, CTRL3, PWM1, PWM2, PWM3 = 2V; SENSEN1, SENSEN2, SENSEN3 = 0V, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS VIN Minimum Operation Voltage l 2.5 V VIN Overvoltage Lockout Rising VIN Falling Hysteresis l 40 41 1 42.5 V V VIN Shutdown IQ EN/UVLO = 0V EN/UVLO = 1.15V 0.1 1 15 µA µA VIN Operating IQ (Not Switching) PWM1, PWM2, PWM3 = 0V, INTVCC = 8V 0.5 0.75 mA INTVCC Operating IQ (Not Switching) PWM1, PWM2, PWM3 = 0V, INTVCC = 8V 2.4 3 mA VREF Voltage 0µA ≤ IVREF ≤ 450µA l 1.955 2.00 2.035 V VREF Line Regulation 2.5V ≤ VIN ≤ 40V 0.001 %/V SENSEP1-SENSEN1, SENSEP2-SENSEN2, SENSEP2-SENSEN2 Current Limit Threshold l 100 110 120 mV SENSEP1, SENSEP2, SENSEP3 Input Bias Current Current Out of Pin, SENSEP1, SENSEP2, SENSEP3 = 0V 55 μA SENSEN1, SENSEN2, SENSEN3 Input Bias Current Current Out of Pin 210 μA Integrated INTVCC Power Supply INTVCC Regulation Voltage l 7.15 7.5 7.75 V INTVCC Undervoltage Lockout Threshold Falling INTVCC Hysteresis 5.15 5.25 0.4 5.4 V V INTVCC Line Regulation (ΔVINTVCC/ΔVIN) 2.5V < VIN < 40V 0.001 0.02 % Error Amplifiers LED Current Sense Threshold (ISP1-ISN1, ISP2-ISN2, ISP3-ISN3) ISP1, ISP2, ISP3, FBH1, FBH2, FBH3 = 48V ISN1, ISN2, ISN3, FBH1, FBH2, FBH3 = 0V l l 243 238 250 250 257 272 mV mV 8/10th LED Current Sense Threshold (ISP1-ISN1, ISP2-ISN2, ISP3-ISN3) CTRL1, CTRL2, CTRL3=1.1V, ISP1, ISP2, ISP3 = 48V CTRL1, CTRL2, CTRL3=1.1V, ISN1, ISN2, ISN3 = 0V l l 194.5 192 200 200 203.5 218 mV mV 1/10th LED Current Sense Threshold (ISP1-ISN1, ISP2-ISN2, ISP3-ISN3) CTRL1, CTRL2, CTRL3=0.3V, ISP1, ISP2, ISP3 = 48V CTRL1, CTRL2, CTRL3=0.3V, ISN1, ISN2, ISN3 = 0V l l 17 15 25 25 29 34 mV mV CTRL1, CTRL2, CTRL3 Range for Linear Current Sense Threshold Adjustment l 0.2 1.2 V CTRL1, CTRL2, CTRL3 Input Bias Current Current Out of Pin, CTRL1, CTRL2, CTRL3 = 0.3V 50 100 nA CTRL1, CTRL2, CTRL3 Idle Mode Threshold Falling Hysteresis 135 150 20 170 mV mV LED Current Sense Amplifier Input Common Mode Range (ISN1, ISN2, ISN3) l 0 100 V LED Overcurrent Protection Threshold (ISP1-ISN1, ISP2-ISN2, ISP3-ISN3) ISP1, ISP2, ISP3, FBH1, FBH2, FBH3 = 48V 1000 mV ISP1, ISP2, ISP3 Input Bias Current (Active) ISP1, ISP2, ISP3, ISN1, ISN2, ISN3 = 48V ISP1, ISP2, ISP3, ISN1, ISN2, ISN3 = 0V 630 –100 µA nA ISP1, ISP2, ISP3 Input Bias Current (Idle) PWM1, PWM2, PWM3=0V , ISP1, ISP2, ISP3, ISN1, ISN2, ISN3 = 48V 2 µA PWM1, PWM2, PWM3, ISP1, ISP2, ISP3, ISN1, ISN2, ISN3 = 0V –40 nA ISN1, ISN2, ISN3 Input Bias Current (Active) ISP1, ISP2, ISP3, ISN1, ISN2, ISN3 = 48V ISP1, ISP2, ISP3, ISN1, ISN2, ISN3 = 0V 20 –100 µA nA |
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