LT3651-4.1/LT3651-4.2 ABSOLUTE MAXIMUM RATINGSPIN CONFIGURATION(Note 1) V TOP VIEW IN .. 40V CLN, CLP, SHDN, CHRG, RT RNG/SS V IN V IN V IN GND CLN CLP FAULT, ACPR ... VIN + 0.5V Up to 40V 36 35 34 33 32 31 30 29 CLP – CLN ...±0.5V NTC 1 28 ILIM SW ...40V ACPR 2 27 SHDN BAT 3 26 CHRG SW – VIN ..4.5V 37 SENSE 4 25 FAULT BOOST ... SW + 10V Up to 50V BOOST 5 24 TIMER SENSE, BAT .. 10V GND 6 23 GND SENSE-BAT ... –0.5V to 0.5V SW 7 22 SW TIMER, RNG/SS, I NC 8 38 21 NC LIM, NTC, RT .. 2.5V NC 9 20 NC Operating Junction Temperature Range NC 10 19 NC (Notes 2, 3) ..–40 to 125°C 11 12 13 14 15 16 17 18 Storage Temperature Range ...–65 to 150°C SW SW SW SW SW SW SW SW UHE PACKAGE 36-LEAD (5mm × 6mm) PLASTIC QFN TJMAX = 125°C, θJA = 43°C/W EXPOSED PAD (PIN 37) IS GND, MUST BE SOLDERED TO PCB EXPOSED PAD (PIN 38) IS SW, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISHTAPE AND REELPART MARKING*PACKAGE DESCRIPTIONTEMPERATURE RANGE LT3651EUHE-4.1#PBF LT3651EUHE-4.1#TRPBF 365141 36-Lead (5mm × 6mm) Plastic QFN –40°C to 125°C LT3651IUHE-4.1#PBF LT3651IUHE-4.1#TRPBF 365141 36-Lead (5mm × 6mm) Plastic QFN –40°C to 125°C LT3651EUHE-4.2#PBF LT3651EUHE-4.2#TRPBF 365142 36-Lead (5mm × 6mm) Plastic QFN –40°C to 125°C LT3651IUHE-4.2#PBF LT3651IUHE-4.2#TRPBF 365142 36-Lead (5mm × 6mm) Plastic QFN –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/ 365142ff 2 For more information www.linear.com/LT3651-4.1 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Pin Functions Block Diagram Operation Applications Information Typical Applications Revision History Typical Application Related Parts