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X-11181-002 Datasheet(PDF) 2 Page - Linear Technology |
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X-11181-002 Datasheet(HTML) 2 Page - Linear Technology |
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2 / 20 page  LT3798 2 3798f PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS EN/UVLO...................................................................30V VIN ............................................................................42V INTVCC......................................................................12V CTRL1, CTRL2, CTRL3................................................4V FB, VREF, COMP+ ........................................................3V VC, OVP, COMP– .........................................................4V SENSE......................................................................0.4V VIN_SENSE.................................................................1mA DCM.......................................................................±3mA Operating Temperature Range (Note 2) LT3798E/LT3798I................................... –40°C to 125°C Storage Temperature Range .................. –65°C to 150°C (Note 1) 1 2 3 4 5 6 7 8 CTRL1 CTRL2 CTRL3 VREF OVP VC COMP+ COMP– 16 15 14 13 12 11 10 9 VIN_SENSE SENSE GATE INTVCC EN/UVLO VIN DCM FB TOP VIEW 17 GND MSE PACKAGE 16-LEAD PLASTIC MSOP θJA = 50°C/W, θJC = 10°C/W EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LT3798EMSE#PBF LT3798EMSE#TRPBF 3798 16-Lead Plastic MSOP –40°C to 125°C LT3798IMSE#PBF LT3798IMSE#TRPBF 3798 16-Lead Plastic MSOP –40°C to 125°C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/ PARAMETER CONDITIONS MIN TYP MAX UNITS Input Voltage Range 10 38 V VIN Quiescent Current VEN/UVLO = 0.2V VEN/UVLO = 1.5V, Not Switching 45 60 70 70 μA μA VIN Quiescent Current, INTVCC Overdriven VINTVCC = 11V 60 μA VIN Shunt Regulator Voltage I = 1mA 40 V VIN Shunt Regulator Current Limit 8mA INTVCC Quiescent Current VEN/UVLO = 0.2V VEN/UVLO = 1.5V, Not Switching 12.5 1.8 15.5 2.2 17.5 2.7 μA mA EN/UVLO Pin Threshold EN/UVLO Pin Voltage Rising l 1.21 1.25 1.29 V EN/UVLO Pin Hysteresis Current EN/UVLO=1V 8 10 12 μA VIN_SENSE Threshold Turn Off 27 μA VREF Voltage 0 μA Load 200μA Load l l 1.97 1.95 2.0 1.98 2.03 2.03 V V CTRL1/CTRL2/CTRL3 Pin Bias Current CTLR1/CTRL2/CTRL3 = 1V ±30 nA ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 18V, INTVCC = 11V, unless otherwise noted. |
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