LTC3608 absolute MaxiMuM ratings pin conFiguration (Note 1) Input Supply Voltage (SVIN, PVIN, ION) ... 20V to –0.3V TOP VIEW Boosted Topside Driver Supply Voltage IN IN IN IN IN (BOOST) .. 26V to –0.3V 52 PV 51 PV 50 PV 49 PV 48 PV 47 SW 46 SW 45 SW 44 SW 43 SW 42 SW 41 SW SW Voltage .. 20V to –0.3V PV 40 PGND INTV IN 1 CC, EXTVCC, (BOOST – SW), RUN/SS, PVIN 2 39 PGND PGOOD Voltages .. 7V to –0.3V PVIN 3 38 PGND 53 FCB, V PVIN 4 37 PGND PV ON, VRNG Voltages .. INTVCC + 0.3V to –0.3V IN 55 PVIN 5 SW 36 PGND ITH, VFB Voltages ... 2.7V to –0.3V PVIN 6 35 PGND Operating Junction Temperature Range PVIN 7 34 PGND (Notes 2, 4) .. –40°C to 125°C SW 8 33 SW NC 9 32 INTVCC Storage Temperature Range ... –55°C to 125°C SGND 10 31 INTVCC BOOST 11 30 SVIN 54 RUN/SS 12 SGND 29 EXTVCC VON 13 28 NC SGND 14 27 SGND 17 18 22 23 I TH FCB 19 NC 21 I ON V FB NC 24 NC 25 SGND 15 V RNG PGOOD 16 SGND 20 SGND 26 WKG PACKAGE 52-LEAD (7mm × 8mm) QFN MULTIPAD TJMAX = 125°C, θJA = 29°C/W orDer inForMation LEAD FREE FINISHTAPE AND REELPART MARKING * PACKAGE DESCRIPTIONTEMPERATURE RANGE LTC3608EWKG#PBF LTC3608EWKG#TRPBF LTC3608WKG 52-Lead (7mm × 8mm) Plastic QFN –40°C to 125°C LTC3608IWKG#PBF LTC3608IWKG#TRPBF LTC3608WKG 52-Lead (7mm × 8mm) Plastic QFN –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. 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/ 3608fc Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Functional Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts