LT1765/LT1765-1.8/LT1765-2.5/ LT1765-3.3/LT1765-5 ABSOLUTE MAXIMUM RATINGS (Note 1) Input Voltage ... 25V SYNC Pin Current ... 1mA BOOST Pin Above SW ... 20V Operating Junction Temperature Range Max BOOST Pin Voltage ..35V (Note 2) ... –40°C to 125°C SHDN Pin ... 25V Storage Temperature Range ... –65°C to 150°C FB Pin Current ... 1mA Lead Temperature (Soldering, 10 sec) .. 300°C PIN CONFIGURATION TOP VIEW GND 1 16 GND TOP VIEW BOOST 2 15 NC V 3 IN 14 SYNC BOOST 1 8 SYNC V 4 IN 13 VC V 2 7 V IN C 17 SW 5 12 FB SW 3 6 FB SW 6 11 SHDN GND 4 5 SHDN NC 7 10 NC S8 PACKAGE GND 8 9 GND 8-LEAD PLASTIC SO T FE PACKAGE JMAX = 125°C, θJA = 90°C/W, θJC(PIN 4) = 30°C/W GROUND PIN CONNECTED TO LARGE COPPER AREA 16-LEAD PLASTIC TSSOP θJA = 45°C/W, θJC(PAD) = 10°C/W EXPOSED PAD (PIN 17) SOLDERED TO LARGE COPPER PLANE ORDER INFORMATIONLEAD FREE FINISHTAPE AND REELPART MARKINGPACKAGE DESCRIPTIONTEMPERATURE RANGE LT1765EFE#PBF LT1765EFE#TRPBF 1765EFE 16-Lead Plastic TSSOP –40°C to 125°C LT1765EFE-1.8#PBF LT1765EFE-1.8#TRPBF 1765EFE-1.8 16-Lead Plastic TSSOP –40°C to 125°C LT1765EFE-2.5#PBF LT1765EFE-2.5#TRPBF 1765EFE-2.5 16-Lead Plastic TSSOP –40°C to 125°C LT1765EFE-3.3#PBF LT1765EFE-3.3#TRPBF 1765EFE-3.3 16-Lead Plastic TSSOP –40°C to 125°C LT1765EFE-5#PBF LT1765EFE-5#TRPBF 1765EFE-5 16-Lead Plastic TSSOP –40°C to 125°C LT1765ES8#PBF LT1765ES8#TRPBF 1765 8-Lead Plastic SO –40°C to 125°C LEAD BASED FINISHTAPE AND REELPART MARKINGPACKAGE DESCRIPTIONTEMPERATURE RANGE LT1765EFE LT1765EFE#TR 1765EFE 16-Lead Plastic TSSOP –40°C to 125°C LT1765EFE-1.8 LT1765EFE-1.8#TR 1765EFE-1.8 16-Lead Plastic TSSOP –40°C to 125°C LT1765EFE-2.5 LT1765EFE-2.5#TR 1765EFE-2.5 16-Lead Plastic TSSOP –40°C to 125°C LT1765EFE-3.3 LT1765EFE-3.3#TR 1765EFE-3.3 16-Lead Plastic TSSOP –40°C to 125°C LT1765EFE-5 LT1765EFE-5#TR 1765EFE-5 16-Lead Plastic TSSOP –40°C to 125°C LT1765ES8 LT1765ES8#TR 1765 8-Lead Plastic SO –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/ 1765fd 2