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LTC3546 Datasheet(PDF) 2 Page - Linear Technology |
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LTC3546 Datasheet(HTML) 2 Page - Linear Technology |
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2 / 28 page  LTC3546 2 3546fb ABSOLUTE MAXIMUM RATINGS VIN1, VIN1D, VIN2, VCCA, VCCD Voltages......... –0.3V to 6V SYNC/MODE, SW1, SW1D, SW2A, SW2B, RUN1, RUN2, VFB1, VFB2, PHASE, FREQ, ITH1, ITH2, TRACK/SS1, TRACK/SS2, BMC1, BMC2 Voltages ................ –0.3V to (VIN1 or VIN2) + 0.3V (Note 1) 9 10 TOP VIEW UFD PACKAGE 28-LEAD (4mm 5mm) PLASTIC QFN 11 12 13 28 27 26 25 24 14 23 6 5 4 3 2 1 BMC2 TRACK/SS2 VFB2 ITH2 VCCD RUN2 VIN2 VIN1 BMC1 TRACK/SS1 VFB1 ITH1 PHASE RUN1 PGND2 PGND1 7 17 18 19 20 29 21 22 16 8 15 TJMAX = 125°C, θJA = 34°C/W EXPOSED PAD (PIN 29) IS GNDD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 TOP VIEW FE PACKAGE 28-LEAD PLASTIC TSSOP 28 27 26 25 24 23 22 21 20 19 18 17 16 15 VCCA SYNC/MODE PGOOD2 BMC2 TRACK/SS2 VFB2 ITH2 VCCD RUN2 VIN2 VIN1 VIN1D SW2A SW2B GNDA FREQ PGOOD1 BMC1 TRACK/SS1 VFB1 ITH1 PHASE RUN1 PGND2 PGND1 PGND1D SW1 SW1D 29 TJMAX = 125°C, θJA = 25°C/W EXPOSED PAD (PIN 29) IS GNDD MUST BE SOLDERED TO PCB PIN CONFIGURATION ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC3546EUFD#PBF LTC3546EUFD#TRPBF 3546 28-Lead (4mm × 5mm) Plastic QFN –40°C to 85°C LTC3546IUFD#PBF LTC3546IUFD#TRPBF 3546 28-Lead (4mm × 5mm) Plastic QFN –40°C to 125°C LTC3546EFE#PBF LTC3546EFE#TRPBF LTC3546FE 28-Lead Plastic TSSOP –40°C to 85°C LTC3546IFE#PBF LTC3546IFE#TRPBF LTC3546FE 28-Lead Plastic TSSOP –40°C to 125°C LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC3546EUFD LTC3546EUFD#TR 3546 28-Lead (4mm × 5mm) Plastic QFN –40°C to 85°C LTC3546IUFD LTC3546IUFD#TR 3546 28-Lead (4mm × 5mm) Plastic QFN –40°C to 125°C LTC3546EFE LTC3546EFE#TR LTC3546FE 28-Lead Plastic TSSOP –40°C to 85°C LTC3546IFE LTC3546IFE#TR LTC3546FE 28-Lead Plastic TSSOP –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/ Maximum Difference Between Any of VIN1, VIN1D, VIN2, VCCA, VCCD ..................................0.3V PGOOD1, PGOOD2 Voltage.......................... –0.3V to 6V Operating Junction Temperature Range (Notes 2, 6, 7)........................................ –40°C to 125°C Storage Temperature Range................... –65°C to 125°C |
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