LT8494 ABSOLUTE MAXIMUM RATINGS (Note 1) VIN, BIAS Voltage ..60V Operating Junction Temperature Range SWEN Voltage ...60V LT8494E, LT8494I (Notes 2, 3) .. –40°C to 125°C FB Voltage ...60V LT8494H (Notes 2, 3) .. –40°C to 150°C SW Voltage ...70V Storage Temperature Range .. –65°C to 150°C PG Voltage ..6V Lead Temperature (Soldering, 10 sec) RT Voltage ..6V FE Package ...300°C SS Voltage ..3V PIN CONFIGURATION TOP VIEW TOP VIEW PG NC NC FB BIAS BIAS 1 20 SW 20 19 18 17 16 FB 2 19 NC FB 3 18 VIN SS 1 15 GND NC 4 17 NC RT 2 14 GND 21 NC 5 16 GND GND 3 21 GND 13 GND NC 6 GND 15 NC GND 4 12 SW PG 7 NC 14 GND 5 11 GND SS 8 13 NC 6 7 8 9 10 NC 9 12 SWEN NC NC RT 10 11 NC GND V IN SWEN UF PACKAGE FE PACKAGE 20-LEAD (4mm × 4mm) PLASTIC QFN 20-LEAD PLASTIC TSSOP θJA = 47°C/W θJA = 38°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 http://www.linear.com/product/LT8494#orderinfoLEAD FREE FINISHTAPE AND REELPART MARKING*PACKAGE DESCRIPTIONTEMPERATURE RANGE LT8494EUF#PBF LT8494EUF#TRPBF 8494 20-Lead (4mm × 4mm) Plastic QFN –40°C to 125°C LT8494IUF#PBF LT8494IUF#TRPBF 8494 20-Lead (4mm × 4mm) Plastic QFN –40°C to 125°C LT8494EFE#PBF LT8494EFE#TRPBF LT8494FE 20-Lead Plastic TSSOP –40°C to 125°C LT8494IFE#PBF LT8494IFE#TRPBF LT8494FE 20-Lead Plastic TSSOP –40°C to 125°C LT8494HFE#PBF LT8494HFE#TRPBF LT8494FE 20-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. 8494fa 2 For more information www.linear.com/LT8494 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 Application Related Parts
