Datasheet LTC3546 (Analog Devices) - 2

LTC3546
ABSOLUTE MAXIMUM RATINGS (Note 1)
VIN1, VIN1D, VIN2, VCCA, VCCD Voltages ... –0.3V to 6V Maximum Difference Between Any of SYNC/MODE, SW1, SW1D, SW2A, SW2B, VIN1, VIN1D, VIN2, VCCA, VCCD ..0.3V RUN1, RUN2, VFB1, VFB2, PHASE, FREQ, PGOOD1, PGOOD2 Voltage .. –0.3V to 6V ITH1, ITH2, TRACK/SS1, TRACK/SS2, BMC1, Operating Junction Temperature Range BMC2 Voltages .. –0.3V to (VIN1 or VIN2) + 0.3V (Notes 2, 6, 7) .. –40°C to 125°C Storage Temperature Range ... –65°C to 125°C
PIN CONFIGURATION
TOP VIEW TOP VIEW V 1 28 CCA GNDA SYNC/MODE 2 27 FREQ PGOOD2 SYNC/MODE V CCA GNDA FREQ PGOOD1 PGOOD2 3 26 PGOOD1 28 27 26 25 24 23 BMC2 4 25 BMC1 BMC2 1 22 BMC1 TRACK/SS2 5 24 TRACK/SS1 TRACK/SS2 2 21 TRACK/SS1 V 6 23 FB2 VFB1 VFB2 3 20 VFB1 I 7 22 TH2 ITH1 ITH2 4 19 ITH1 29 29 V 8 21 PHASE V CCD CCD 5 18 PHASE RUN2 9 20 RUN1 RUN2 6 17 RUN1 V 10 PGND2 V 19 IN2 IN2 7 16 PGND2 V V 11 18 PGND1 IN1 8 15 PGND1 IN1 9 10 11 12 13 14 V 12 17 IN1D PGND1D SW2A 13 16 SW1 V IN1D SW2A SW2B SW1D SW1 SW2B 14 15 SW1D PGND1D UFD PACKAGE FE PACKAGE 28-LEAD (4mm × 5mm) PLASTIC QFN 28-LEAD PLASTIC TSSOP T JMAX = 125°C, θJA = 34°C/W EXPOSED PAD (PIN 29) IS GNDD TJMAX = 125°C, θJA = 25°C/W EXPOSED PAD (PIN 29) IS GNDD MUST BE SOLDERED TO PCB 3546fd 2 For more information www.linear.com/3546