LT3505 ABSOLUTE MAXIMUM RATINGS (Note 1) Input Voltage (VIN) ..40V Operating Temperature Range (Note 2) BOOST Pin Voltage ..50V LT3505E .. –40°C to 85°C BOOST Pin Above SW Pin ...25V LT3505I ... –40°C to 125°C SHDN Pin ..40V Maximum Junction Temperature .. 125°C FB Pin ...6V Storage Temperature Range ... –65°C to 150°C VC Pin ...3V RT Pin ...3V PIN CONFIGURATION TOP VIEW BOOST 1 8 VC TOP VIEW SW 2 7 FB BOOST 1 8 VC 9 SW 2 7 FB VIN 3 6 RT 9 VIN 3 6 RT SHDN 4 5 GND SHDN 4 5 GND MS8E PACKAGE DD PACKAGE 8-LEAD PLASTIC MSOP 8-LEAD (3mm × 3mm) PLASTIC DFN TJMAX = 125°C, θJA = 40°C/W, θJC = 5°C/W T EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB JMAX = 125°C, θJA = 43°C/W, θJC = 5°C/W EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISHTAPE AND REELPART MARKINGPACKAGE DESCRIPTIONTEMPERATURE RANGE LT3505EDD#PBF LT3505EDD#TRPBF LCHB 8-Lead (3mm x 3mm) Plastic DFN –40°C to 85°C LT3505IDD#PBF LT3505IDD#TRPBF LCHC 8-Lead (3mm x 3mm) Plastic DFN –40°C to 125°C LT3505EMS8E#PBF LT3505EMS8E#TRPBF LTCNX 8-Lead Plastic MSOP –40°C to 85°C LT3505IMS8E#PBF LT3505IMS8E#TRPBF LTCNY 8-Lead Plastic MSOP –40°C to 125°C LEAD BASED FINISHTAPE AND REELPART MARKINGPACKAGE DESCRIPTIONTEMPERATURE RANGE LT3505EDD LT3505EDD#TR LCHB 8-Lead (3mm x 3mm) Plastic DFN –40°C to 85°C LT3505IDD LT3505IDD#TR LCHC 8-Lead (3mm x 3mm) Plastic DFN –40°C to 125°C LT3505EMS8E LT3505EMS8E#TR LTCNX 8-Lead Plastic MSOP –40°C to 85°C LT3505IMS8E LT3505IMS8E#TR LTCNY 8-Lead Plastic MSOP –40°C to 125°C Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/ 3505fc 2