Datasheet LT3744 (Analog Devices) - 2

LT3744
absoluTe MaxiMuM raTings (Note 1) Relative to VEE (Tested with VEE = 0V and SGND = 20V): Relative to SGND (Tested with VEE = 0V and SGND = 0V):
VIN ..36V VIN ..36V EN/UVLO ..36V EN/UVLO ..36V CTRL1, CTRL2, CTRL3 ..23V CTRL1, CTRL2, CTRL3 ..3V CTRLT ...23V CTRLT ..3V ISP, ISN ...36V ISP, ISN ...36V LED_ISP, LED_ISN ..3V LED_ISP, LED_ISN ..3V VC1, VC2, VC3 ...3V VC1, VC2, VC3 ...3V VFNEG ...–15V to 3V VFNEG ..–15V to 3V BOOST ..41V BOOST ..41V FAULT, SYNC ...23V FAULT, SYNC ...3V PWM1, PWM2, PWM3 ...25V PWM1, PWM2, PWM3 ..5V FB ...3V FB ...3V SW ..36V SW ..36V INTVCC, RT, BG, TG, PWM_OUT1, PWM_OUT2, Storage Temperature Range .. –65°C to 150°C PWM_OUT3, VREF, SS ..Note 4
pin conFiguraTion
TOP VIEW V CC V IN VEE INT VEE BG BOOST SW TG 36 35 34 33 32 31 30 29 EN/UVLO 1 28 VEE CTRL1 2 27 PWM_OUT1 VREF 3 26 VEE CTRL2 4 25 PWM_OUT2 CTRL3 5 37 24 VFNEG CTRLT 6 VEE 23 PWM_OUT3 PWM1 7 22 ISP PWM2 8 21 ISN PWM3 9 20 VC1 SYNC 10 19 VC2 11 12 13 14 15 16 17 18 T RT SS FB V C3 FAUL SGND LED_ISN LED_ISP UHE PACKAGE 36-LEAD (5mm × 6mm) PLASTIC QFN θJA = 34°C/W, θJC = 3°C/W EXPOSED PAD (PIN 37) IS VEE, MUST BE SOLDERED TO PCB 3744fa 2 For more information www.linear.com/LT3744 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Typical Application Related Parts