Datasheet LT3795 (Analog Devices) - 2

LT3795
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1)
VIN .. 110V TOP VIEW EN/UVLO ... 110V ISP 1 28 IVINCOMP ISP, ISN ... 110V ISN 2 27 IVINP TG, GATE...Note 2 TG 3 26 IVINN IVINP, IVINN .. 110V GND 4 25 OVLO VIN - IVINN ... –0.3V to 4V ISMON 5 24 EN/UVLO INTVCC (Note 3) ...8.6V, VIN + 0.3V CTRL2 6 23 VIN PWM, SHORTLED, OPENLED ...12V FB 7 29 22 GND GND FB, RAMP, OVLO ...8V V 8 21 C GND CTRL1, CTRL2 ...15V CTRL1 9 20 INTVCC SENSE ..0.5V V 10 19 REF GATE ISMON, IVINCOMP ...5V SS 11 18 SENSE RT 12 17 GND VC, VREF, SS ..3V RAMP 13 16 OPENLED RT ...2V PWM 14 15 SHORTLED Operating Junction Temperature Range (Note 4) LT3795E/LT3795I .. –40 to 125°C FE PACKAGE 28-LEAD PLASTIC TSSOP LT3795H ..–40 to 150°C TJMAX = 150°C, θJA = 30°C/W, θJC = 10°C/W EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB Storage Temperature Range ..–65 to 150°C
ORDER INFORMATION http://www.linear.com/product/LT3795#orderinfo LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3795EFE#PBF LT3795EFE#TRPBF LT3795FE 28-Lead Plastic TSSOP –40°C to 125°C LT3795IFE#PBF LT3795IFE#TRPBF LT3795FE 28-Lead Plastic TSSOP –40°C to 125°C LT3795HFE#PBF LT3795HFE#TRPBF LT3795FE 28-Lead Plastic TSSOP –40°C to 150°C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. 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/. Some packages are available in 500 unit reels through designated sales channels with #TRMPBF suffix.
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C, VIN = 24V, EN/UVLO = 24V, CTRL1 = CTRL2 = 2V, PWM = 5V, unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Minimum Operating Voltage VIN Tied to INTVCC 4.5 V VIN Shutdown IQ EN/UVLO = 0V, PWM = 0V 10 µA EN/UVLO = 1.15V, PWM = 0V 22 µA VIN Operating IQ (Not Switching) RT = 82.5k to GND, FB = 1.5V 2.9 3.5 mA VREF Voltage –100µA ≤ IREF ≤ 10µA l 1.97 2.015 2.06 V VREF Pin Line Regulation 4.5V < VIN < 110V 1.5 m%/V VREF Pin Load Regulation –100µA ≤ IREF ≤ 0µA 10 m%/µA SENSE Current Limit Threshold l 100 117 125 mV 3795fc 2 For more information www.linear.com/LT3795 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts