Datasheet LT3579, LT3579-1 (Analog Devices) - 2

LT3579/LT3579-1
ABSOLUTE MAXIMUM RATINGS (Note 1)
VIN Voltage ...–0.3V to 40V FAULT ... –0.3V to 40V SW1/SW2 Voltage ... –0.4V to 42V FAULT Current ...±0.5mA RT Voltage ..–0.3V to 5V CLKOUT ... –0.3V to 3V SS, FB Voltage ... –0.3V to 2.5V CLKOUT Current... ±1mA VC Voltage ... –0.3V to 2V Operating Junction Temperature Range SHDN Voltage .. –0.3V to 40V LT3579E (Notes 2, 4) ... –40°C to 125°C SYNC Voltage .. –0.3V to 5.5V LT3579I (Notes 2, 4) .. –40°C to 125°C GATE Voltage ... –0.3V to 80V Storage Temperature Range ..–65°C to 150°C
PIN CONFIGURATION
TOP VIEW TOP VIEW FB 1 20 SYNC FB V C SS SYNC VC 2 19 SS 20 19 18 17 GATE 3 18 RT GATE 1 16 RT FAULT 4 17 SHDN FAULT 2 15 SHDN VIN 5 21 16 CLKOUT VIN 3 21 14 CLKOUT SW1 6 GND 15 SW2 GND SW1 4 13 SW2 SW1 7 14 SW2 SW1 5 12 SW2 SW1 8 13 SW2 SW1 6 11 SW2 SW1 9 12 SW2 7 8 9 10 SW1 10 11 SW2 SW1 GND GND SW2 FE PACKAGE UFD PACKAGE 20-LEAD PLASTIC TSSOP 20-LEAD (4mm × 5mm) PLASTIC QFN TJMAX = 125°C, θJA = 38°C/W, θJC = 10°C/W TJMAX = 125°C, θJA = 34°C/W, θJC = 2.7°C/W EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB EXPOSED PAD (PIN 21) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3579EFE#PBF LT3579EFE#TRPBF LT3579FE 20-Lead Plastic TSSOP –40°C to 125°C LT3579IFE#PBF LT3579IFE#TRPBF LT3579FE 20-Lead Plastic TSSOP –40°C to 125°C LT3579EUFD#PBF LT3579EUFD#TRPBF 3579 20-Lead (4mm × 5mm) Plastic QFN –40°C to 125°C LT3579IUFD#PBF LT3579IUFD#TRPBF 3579 20-Lead (4mm × 5mm) Plastic QFN –40°C to 125°C LT3579EFE-1#PBF LT3579EFE-1#TRPBF LT3579FE-1 20-Lead Plastic TSSOP –40°C to 125°C LT3579IFE-1#PBF LT3579IFE-1#TRPBF LT3579FE-1 20-Lead Plastic TSSOP –40°C to 125°C LT3579EUFD-1#PBF LT3579EUFD-1#TRPBF 35791 20-Lead (4mm × 5mm) Plastic QFN –40°C to 125°C LT3579IUFD-1#PBF LT3579IUFD-1#TRPBF 35791 20-Lead (4mm × 5mm) Plastic QFN –40°C to 125°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. B 2 For more information www.analog.com Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram State Diagram Operation Applications Information Appendix Typical Application Package Description Typical Application Related Parts Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram State Diagram Operation Applications Information Appendix Typical Application Package Description Revision History Typical Application Related Parts