LT3952A ABSOLUTE MAXIMUM RATINGSPIN CONFIGURATION(Note 1) VIN, IVINP, IVINN, SHORTLED, OPENLED, TOP VIEW EN/UVLO ..42V GND 1 28 GND OVLO ..12V SW 2 27 ISP SW, ISP, ISN, TG ...60V SW 3 26 ISN IVINP-IVINN ...–1V to 3V SW 4 25 TG CTRL, FB, DIM, SYNC/SPRD, PWM ... INTV IVINN 5 24 ISMON CC + 0.3V VC, SS, ISMON, IVINCOMP ...3V IVINP 6 23 IVINCOMP RT, V V 7 29 22 IN OPENLED REF ...2V GND INTV EN/UVLO 8 21 SHORTLED CC (Note 4) ...3.6V OVLO 9 20 PWM Operating Junction Temperature Range (Notes 2, 3) INTV 10 19 SS LT3952AE/LT3952AI ... –40°C to 125°C CC SYNC/SPRD 11 18 VREF LT3952AH .. –40°C to 150°C GND 12 17 CTRL Storage Temperature Range .. –65°C to 150°C VC 13 16 FB Lead Temperature (Soldering, 10 sec) ...300°C RT 14 15 DIM FE PACKAGE 28-LEAD PLASTIC TSSOP θJA = 30°C/W EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISHTAPE AND REELPART MARKING*PACKAGE DESCRIPTIONTEMPERATURE RANGE LT3952AEFE#PBF LT3952AEFE#TRPBF LT3952AFE 28-Lead Plastic TSSOP –40°C to 125°C LT3952AIFE#PBF LT3952AIFE#TRPBF LT3952AFE 28-Lead Plastic TSSOP –40°C to 125°C LT3952AHFE#PBF LT3952AHFE#TRPBF LT3952AFE 28-Lead Plastic TSSOP –40°C to 150°C Contact the factory for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix. Rev A 2 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Package Description Revision History Typical Application Related Parts
