LT1308A/LT1308B ABSOLUTE MAXIMUM RATINGS (Note 1) VIN, SHDN, LBO Voltage ... 10V Operating Temperature Range SW Voltage .. –0.4V to 36V Commercial... 0°C to 70°C FB Voltage ... VIN + 1V Extended Commerial (Note 2) .. –40°C to 85°C VC Voltage ... 2V Industrial ... –40°C to 85°C LBI Voltage ... –0.1V to 1V Storage Temperature Range .. –65°C to 150°C Current into FB Pin ... ±1mA Lead Temperature (Soldering, 10 sec) ... 300°C PIN CONFIGURATION TOP VIEW V 1 C 14 LBO FB 2 13 LBI TOP VIEW SHDN 3 12 VIN V 1 8 LBO C GND 4 11 VIN FB 2 7 LBI GND 5 10 SW SHDN 3 6 VIN GND 6 9 SW GND 4 5 SW GND 7 8 SW S8 PACKAGE F PACKAGE 8-LEAD PLASTIC SO 14-LEAD PLASTIC TSSOP TJMAX = 125°C, θJA = 190°C/W (NOTE 6) TJMAX = 125°C, θJA = 80°C/W OBSOLETE, FOR INFORMATION PURPOSES ONLY Contact Linear Technology for Potential Replacement ORDER INFORMATIONLEAD FREE FINISHTAPE AND REELPART MARKINGPACKAGE DESCRIPTIONTEMPERATURE RANGE LT1308ACS8#PBF LT1308ACS8#TRPBF 1308A 8-Lead Plastic SO 0°C to 70°C LT1308AIS8#PBF LT1308AIS8#TRPBF 1308AI 8-Lead Plastic SO –40°C to 85°C LT1308BCS8#PBF LT1308BCS8#TRPBF 1308B 8-Lead Plastic SO 0°C to 70°C LT1308BIS8#PBF LT1308BIS8#TRPBF 1308BI 8-Lead Plastic SO –40°C to 85°C LT1308ACF#PBF LT1308ACF#TRPBF LT1308ACF 14-Lead Plastic TSSOP 0°C to 70°C LT1308BCF#PBF LT1308BCF#TRPBF LT1308BCF 14-Lead Plastic TSSOP 0°C to 70°C LEAD BASED FINISHTAPE AND REELPART MARKINGPACKAGE DESCRIPTIONTEMPERATURE RANGE LT1308ACS8 LT1308ACS8#TR 1308A 8-Lead Plastic SO 0°C to 70°C LT1308AIS8 LT1308AIS8#TR 1308AI 8-Lead Plastic SO –40°C to 85°C LT1308BCS8 LT1308BCS8#TR 1308B 8-Lead Plastic SO 0°C to 70°C LT1308BIS8 LT1308BIS8#TR 1308BI 8-Lead Plastic SO –40°C to 85°C LT1308ACF LT1308ACF#TR LT1308ACF 14-Lead Plastic TSSOP 0°C to 70°C LT1308BCF LT1308BCF#TR LT1308BCF 14-Lead Plastic TSSOP 0°C to 70°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/ This product is only offered in trays. For more information go to: http://www.linear.com/packaging/ 1308abfb 2