LTC3646/LTC3646-1 ABSOLUTE MAXIMUM RATINGS (Notes 1, 7) PVIN, SVIN Supply Voltage .. –0.3V to 45V EXTVCC Voltage ... –0.3V to 6V SW Voltage (DC) ... –0.3V to PVIN + 0.3V RUN Voltage... –0.3V to 45V BOOST – SW Voltage ... –0.3V to 6V PGOOD ...–0.3V to INTVCC + 0.3V VON Voltage .. –0.3V to 33V Operating Junction Temperature Range MODE/SYNC, RT, ITH, (Notes 2, 7) .. –40°C to 150°C VFB Voltage ..–0.3V to INTVCC + 0.3V Storage Temperature Range .. –65°C to 150°C INTVCC Voltage .. –0.3V to 6V Lead Temperature (Soldering, 10 sec) MSE ..300°C PIN CONFIGURATION TOP VIEW SGND 1 14 SVIN TOP VIEW V SGND 1 16 SVIN FB 2 13 RUN V 2 FB 15 RUN ITH 3 12 EXTVCC 15 ITH 3 14 EXTVCC RT 4 PGND 11 INTV RT 4 17 13 INTV CC CC V 5 ON PGND 12 BOOST VON 5 10 BOOST PGOOD 6 11 SW PGOOD 6 9 SW MODE/SYNC 7 10 PVIN NC 8 9 PVIN MODE/SYNC 7 8 PVIN MSE PACKAGE 16-LEAD PLASTIC MSOP DE PACKAGE 14-LEAD (4mm × 3mm) PLASTIC DFN T JMAX = 150°C, θJA = 38°C/W EXPOSED PAD (PIN 17) IS PGND, MUST BE SOLDERED TO PCB TJMAX = 150°C, θJA = 43°C/W EXPOSED PAD (PIN 15) IS PGND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISHTAPE AND REELPART MARKINGPACKAGE DESCRIPTIONTEMPERATURE RANGE LTC3646EDE#PBF LTC3646EDE#TRPBF 3646 14-Lead (4mm × 3mm) Plastic DFN –40°C to 85°C LTC3646IDE#PBF LTC3646IDE#TRPBF 3646 14-Lead (4mm × 3mm) Plastic DFN –40°C to 125°C LTC3646HDE#PBF LTC3646HDE#TRPBF 3646 14-Lead (4mm × 3mm) Plastic DFN –40°C to 150°C LTC3646EMSE#PBF LTC3646EMSE#TRPBF 3646 16-Lead Plastic MSOP –40°C to 85°C LTC3646IMSE#PBF LTC3646IMSE#TRPBF 3646 16-Lead Plastic MSOP –40°C to 125°C LTC3646HMSE#PBF LTC3646HMSE#TRPBF 3646 16-Lead Plastic MSOP –40°C to 150°C LTC3646EDE-1#PBF LTC3646EDE-1#TRPBF 36461 14-Lead (4mm × 3mm) Plastic DFN –40°C to 85°C LTC3646IDE-1#PBF LTC3646IDE-1#TRPBF 36461 14-Lead (4mm × 3mm) Plastic DFN –40°C to 125°C LTC3646HDE-1#PBF LTC3646HDE-1#TRPBF 36461 14-Lead (4mm × 3mm) Plastic DFN –40°C to 150°C LTC3646EMSE-1#PBF LTC3646EMSE-1#TRPBF 36461 16-Lead Plastic MSOP –40°C to 85°C LTC3646IMSE-1#PBF LTC3646IMSE-1#TRPBF 36461 16-Lead Plastic MSOP –40°C to 125°C LTC3646HMSE-1#PBF LTC3646HMSE-1#TRPBF 36461 16-Lead Plastic MSOP –40°C to 150°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/ 36461fc 2 For more information www.linear.com/LTC3646 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Operation Applications Information Typical Applications Typical Application Related Parts