LTC3631 absoluTe MaxiMuM raTings (Note 1) VIN Supply Voltage ... –0.3V to 60V Operating Junction Temperature Range SW Voltage (DC) ... –0.3V to (VIN + 0.3V) (Note 2) .. –40°C to 125°C RUN Voltage .. –0.3V to 60V Storage Temperature Range ... –65°C to 150°C HYST, ISET, SS Voltages ... –0.3V to 6V Lead Temperature (Soldering, 10 sec) VFB ... –0.3V to 6V MS8E .. 300°C VOUT (Fixed Output Versions) ... –0.3V to 6V pin conFiguraTion TOP VIEW TOP VIEW SW 1 8 GND SW 1 8 GND V VIN 2 7 HYST IN 2 9 7 HYST 9 ISET 3 GND 6 VOUT/VFB GND ISET 3 6 VOUT/VFB SS 4 5 RUN SS 4 5 RUN MS8E PACKAGE 8-LEAD PLASTIC MSOP T DD PACKAGE JMAX = 125°C, θJA = 40°C/W, θJC = 5°-10°C/W EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB 8-LEAD (3mm × 3mm) PLASTIC DFN TJMAX = 125°C, θJA = 43°C/W, θJC = 3°C/W EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB orDer inForMaTion LEAD FREE FINISHTAPE AND REELPART MARKING*PACKAGE DESCRIPTIONTEMPERATURE RANGE LTC3631EMS8E#PBF LTC3631EMS8E#TRPBF LTFDT 8-Lead Plastic MSOP –40°C to 125°C LTC3631EMS8E-3.3#PBF LTC3631EMS8E-3.3#TRPBF LTFFP 8-Lead Plastic MSOP –40°C to 125°C LTC3631EMS8E-5#PBF LTC3631EMS8E-5#TRPBF LTFFR 8-Lead Plastic MSOP –40°C to 125°C LTC3631IMS8E#PBF LTC3631IMS8E#TRPBF LTFDT 8-Lead Plastic MSOP –40°C to 125°C LTC3631IMS8E-3.3#PBF LTC3631IMS8E-3.3#TRPBF LTFFP 8-Lead Plastic MSOP –40°C to 125°C LTC3631IMS8E-5#PBF LTC3631IMS8E-5#TRPBF LTFFR 8-Lead Plastic MSOP –40°C to 125°C LTC3631EDD#PBF LTC3631EDD#TRPBF LFDV 8-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C LTC3631EDD-3.3#PBF LTC3631EDD-3.3#TRPBF LFFN 8-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C LTC3631EDD-5#PBF LTC3631EDD-5#TRPBF LFFQ 8-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C LTC3631IDD#PBF LTC3631IDD#TRPBF LFDV 8-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C LTC3631IDD-3.3#PBF LTC3631IDD-3.3#TRPBF LFFN 8-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C LTC3631IDD-5#PBF LTC3631IDD-5#TRPBF LFFQ 8-Lead (3mm × 3mm) Plastic DFN –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/ 3631fe 2 For more information www.linear.com/LTC3631 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Application Related Parts