LTC3851A-1 absoluTe MaxiMuM raTings (Note 1) Input Supply Voltage (VIN) ...40V to –0.3V INTVCC Peak Output Current ..50mA Topside Driver Voltage (BOOST) .. 46V to –0.3V Operating Junction Temperature Range (Notes 2, 3) Switch Voltage (SW) ...40V to –5V E-Grade, I-Grade .. –40°C to 125°C INTVCC, (BOOST – SW), RUN, PGOOD .. 6V to –0.3V H-Grade ... –40°C to 150°C TK/SS ...INTVCC to –0.3V MP-Grade .. –55°C to 150°C SENSE+, SENSE– .. 6V to –0.3V Storage Temperature Range ..–65°C to 150°C MODE/PLLIN, FREQ/PLLFLTR ..INTVCC to –0.3V Lead Temperature (Soldering, 10 sec) ITH, VFB Voltages ... 3V to –0.3V MSE ..300°C pin conFiguraTion TOP VIEW TR TOP VIEW FREQ/PLLFL MODE/PLLIN SW TG MODE/PLLIN 1 16 SW FREQ/PLLFLTR 2 15 TG 16 15 14 13 RUN 3 14 BOOST RUN 1 12 BOOST TK/SS 4 17 13 VIN I 5 TH GND 12 INTVCC TK/SS 2 17 11 VIN FB 6 11 BG GND SENSE– 7 10 GND ITH 3 10 INTVCC SENSE+ 8 9 PGOOD FB 4 9 BG MSE PACKAGE 5 6 7 8 16-LEAD PLASTIC MSOP – + TJMAX = 125°C, θJA = 35°C/W TO 40°C/W GND EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB SENSE SENSE PGOOD UD PACKAGE 16-LEAD (3mm × 3mm) PLASTIC QFN TJMAX = 125°C, θJA = 68°C/W, θJC = 4.2°C/W EXPOSED PAD (PIN 17) IS GND, MUST BE SOLDERED TO PCB orDer inForMaTion LEAD FREE FINISHTAPE AND REELPART MARKING*PACKAGE DESCRIPTIONTEMPERATURE RANGE LTC3851AEMSE-1#PBF LTC3851AEMSE-1#TRPBF 3851A1 16-Lead Plastic MSOP –40°C to 125°C LTC3851AIMSE-1#PBF LTC3851AIMSE-1#TRPBF 3851A1 16-Lead Plastic MSOP –40°C to 125°C LTC3851AHMSE-1#PBF LTC3851AHMSE-1#TRPBF 3851A1 16-Lead Plastic MSOP –40°C to 150°C LTC3851AMPMSE-1#PBF LTC3851AMPMSE-1#TRPBF 3851A1 16-Lead Plastic MSOP –55°C to 150°C LTC3851AEUD-1#PBF LTC3851AEUD-1#TRPBF LFQB 16-Lead (3mm × 3mm) Plastic QFN –40°C to 125°C LTC3851AIUD-1#PBF LTC3851AIUD-1#TRPBF LFQB 16-Lead (3mm × 3mm) Plastic QFN –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. Consult LTC Marketing for information on non-standard lead based finish parts. 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/ 3851a1fa 2 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
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