LTC3851A 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 .. 6V to –0.3V H-Grade ... –40°C to 150°C TK/SS, ILIM ...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 GN/MSE ..300°C pin conFiguraTion TOP VIEW TR TOP VIEW MODE/PLLIN 1 16 SW TOP VIEW FREQ/PLLFL MODE/PLLIN SW TG FREQ/PLLFLTR 2 15 TG MODE/PLLIN 1 16 SW FREQ/PLLFLTR 2 15 TG 16 15 14 13 RUN 3 14 BOOST RUN 3 14 BOOST RUN 1 12 BOOST TK/SS 4 17 13 V TK/SS 4 13 V IN IN I 5 TK/SS 2 11 V TH GND 12 INTVCC 17 IN I FB 6 11 BG GND TH 5 12 INTVCC ITH 3 10 INTV SENSE– 7 10 GND CC FB 6 11 BG SENSE+ 8 9 ILIM FB 4 9 BG SENSE– 7 10 GND MSE PACKAGE 5 6 7 8 16-LEAD PLASTIC MSOP – + SENSE+ 8 9 I LIM T I LIM JMAX = 125°C, θJA = 35°C/W TO 40°C/W GND SENSE SENSE GN PACKAGE EXPOSED PAD (PIN 17) IS GND, 16-LEAD PLASTIC SSOP NARROW MUST BE SOLDERED TO PCB UD PACKAGE 16-LEAD (3mm × 3mm) PLASTIC QFN T JMAX = 125°C, θJA = 110°C/W 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 LTC3851AEGN#PBF LTC3851AEGN#TRPBF 3851A 16-Lead Plastic SSOP –40°C to 125°C LTC3851AIGN#PBF LTC3851AIGN#TRPBF 3851A 16-Lead Plastic SSOP –40°C to 125°C LTC3851AEMSE#PBF LTC3851AEMSE#TRPBF 3851A 16-Lead Plastic MSOP –40°C to 125°C LTC3851AIMSE#PBF LTC3851AIMSE#TRPBF 3851A 16-Lead Plastic MSOP –40°C to 125°C LTC3851AHMSE#PBF LTC3851AHMSE#TRPBF 3851A 16-Lead Plastic MSOP –40°C to 150°C LTC3851AMPMSE#PBF LTC3851AMPMSE#TRPBF 3851A 16-Lead Plastic MSOP –55°C to 150°C LTC3851AEUD#PBF LTC3851AEUD#TRPBF LFPZ 16-Lead (3mm × 3mm) Plastic QFN –40°C to 125°C LTC3851AIUD#PBF LTC3851AIUD#TRPBF LFPZ 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/ 3851afa 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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