Datasheet LT3991, LT3991-3.3, LT3991-5 (Analog Devices) - 2

LT3991/LT3991-3.3/LT3991-5
absoluTe MaxiMuM raTings (Note 1)
VIN, EN Voltage ...55V Operating Junction Temperature Range (Note 2) BOOST Pin Voltage ...75V LT3991E ... –40°C to 125°C BOOST Pin Above SW Pin ...30V LT3991I .. –40°C to 125°C FB, VOUT, RT, SYNC, SS Voltage ...6V Storage Temperature Range .. –65°C to 150°C PG, BD Voltage ...30V Lead Temperature (Soldering, 10 sec) Boost Diode Current ..1A (MSE Only) ...300°C
pin conFiguraTion
LT3991 LT3991 LT3991-3.3, LT3991-5 TOP VIEW TOP VIEW TOP VIEW BD 1 10 SYNC BD 1 10 SYNC BD 1 10 SYNC BOOST 2 9 PG 11 BOOST 2 9 11 PG BOOST 2 9 11 PG SW 3 GND 8 RT SW 3 8 GND RT SW 3 8 GND RT V VIN 4 7 SS VIN 4 7 SS IN 4 7 SS EN 5 6 FB EN 5 6 VOUT EN 5 6 FB MSE PACKAGE MSE PACKAGE 10-LEAD PLASTIC MSOP 10-LEAD PLASTIC MSOP DD PACKAGE 10-LEAD (3mm × 3mm) PLASTIC DFN θJA = 45°C, θJC = 10°C/W θJA = 45°C, θJC = 10°C/W EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB θJA = 45°C, θJC = 10°C/W EXPOSED PAD (PIN 11) IS GND, MUST BE SOLDERED TO PCB
orDer inForMaTion LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LT3991EDD#PBF LT3991EDD#TRPBF LFJR 10-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C LT3991IDD#PBF LT3991IDD#TRPBF LFJR 10-Lead (3mm × 3mm) Plastic DFN –40°C to 125°C LT3991EMSE#PBF LT3991EMSE#TRPBF LTFJS 10-Lead Plastic MSOP –40°C to 125°C LT3991IMSE#PBF LT3991IMSE#TRPBF LTFJS 10-Lead Plastic MSOP –40°C to 125°C LT3991EMSE-3.3#PBF LT3991EMSE-3.3#TRPBF LTFRS 10-Lead Plastic MSOP –40°C to 125°C LT3991IMSE-3.3#PBF LT3991IMSE-3.3#TRPBF LTFRS 10-Lead Plastic MSOP –40°C to 125°C LT3991EMSE-5#PBF LT3991EMSE-5#TRPBF LTFRV 10-Lead Plastic MSOP –40°C to 125°C LT3991IMSE-5#PBF LT3991IMSE-5#TRPBF LTFRV 10-Lead Plastic MSOP –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/ 3991fa 2 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 Revision History Related Parts