LTC3642 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 LTC3642EMS8E#PBF LTC3642EMS8E#TRPBF LTDTH 8-Lead Plastic MSOP –40°C to 125°C LTC3642EMS8E-3.3#PBF LTC3642EMS8E-3.3#TRPBF LTDYN 8-Lead Plastic MSOP –40°C to 125°C LTC3642EMS8E-5#PBF LTC3642EMS8E-5#TRPBF LTDYQ 8-Lead Plastic MSOP –40°C to 125°C LTC3642IMS8E#PBF LTC3642IMS8E#TRPBF LTDTH 8-Lead Plastic MSOP –40°C to 125°C LTC3642IMS8E-3.3#PBF LTC3642IMS8E-3.3#TRPBF LTDYN 8-Lead Plastic MSOP –40°C to 125°C LTC3642IMS8E-5#PBF LTC3642IMS8E-5#TRPBF LTDYQ 8-Lead Plastic MSOP –40°C to 125°C LTC3642EDD#PBF LTC3642EDD#TRPBF LDTJ 8-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C LTC3642EDD-3.3#PBF LTC3642EDD-3.3#TRPBF LDYM 8-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C LTC3642EDD-5#PBF LTC3642EDD-5#TRPBF LDYP 8-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C LTC3642IDD#PBF LTC3642IDD#TRPBF LDTJ 8-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C LTC3642IDD-3.3#PBF LTC3642IDD-3.3#TRPBF LDYM 8-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C LTC3642IDD-5#PBF LTC3642IDD-5#TRPBF LDYP 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/ 3642fc 2 Document Outline FEATURES DESCRIPTION APPLICATIONS TYPICAL APPLICATION ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION ORDER INFORMATION ELECTRICAL CHARACTERISTICS TYPICAL PERFORMANCE CHARACTERISTICS PIN FUNCTIONS BLOCK DIAGRAM OPERATION APPLICATIONS INFORMATION TYPICAL APPLICATIONS PACKAGE DESCRIPTION REVISION HISTORY TYPICAL APPLICATION RELATED PARTS