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LTC3556 2 3556f PIN CONFIGURATION ABSOLUTE MAXIMUM RATINGS VBUS (Transient) t < 1ms, Duty Cycle < 1%.. –0.3V to 7V VIN1, VIN2, VIN3, VBUS (Static), DVCC, FB1, FB2, NTC, BAT, ENALL, SCL, SDA, PGOODALL, CHRG....................................... –0.3V to 6V SEQ....................–0.3V to Lesser of 6V or (VOUT + 0.3V) FB3, VC3..............–0.3V to Lesser of 6V or (VIN3 + 0.3V) ICLPROG ....................................................................3mA IPGOODALL, ICHRG ....................................................50mA IPROG........................................................................2mA ILDO3V3...................................................................30mA ISW1, ISW2 ............................................................600mA ISW, IBAT, IVOUT.............................................................2A ISWAB3, ISWCD3, IVOUT3.............................................2.5A Operating Temperature Range (Note 2).... –40°C to 85°C Junction Temperature (Note 3) ............................. 125°C Storage Temperature Range................... –65°C to 125°C (Note 1) 9 10 TOP VIEW 29 UFD PACKAGE 28-LEAD (4mm 5mm) PLASTIC QFN 11 12 13 28 27 26 25 24 14 23 6 5 4 3 2 1 LDO3V3 CLPROG NTC SW1 VIN1 FB1 FB3 VC3 GATE CHRG PROG SW2 VIN2 FB2 SDA PGOODALL 7 17 18 19 20 21 22 16 8 15 TJMAX = 125°C, θJA = 37°C/W EXPOSED PAD (PIN 29) IS GND, MUST BE SOLDERED TO PCB ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VBUS = 5V, VIN1 = VIN2 = VIN3 = VOUT3 = 3.8V, BAT = 3.8V, DVCC = 3.3V, RPROG = 1k, RCLPROG = 3.01k, unless otherwise noted. ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LTC3556EUFD#PBF LTC3556EUFD#TRPBF 3556 28-Lead (4mm × 5mm) Plastic QFN –40°C to 85°C Consult LTC Marketing for parts specified with wider operating temperature ranges. 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/ SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS PowerPath Switching Regulator VBUS Input Supply Voltage 4.35 5.5 V IBUSLIM Total Input Current 1x Mode, VOUT = BAT 5x Mode, VOUT = BAT 10x Mode, VOUT = BAT Suspend Mode, VOUT = BAT l l l l 87 436 800 0.31 95 460 860 0.38 100 500 1000 0.50 mA mA mA mA IVBUSQ VBUS Quiescent Current 1x Mode, IOUT = 0mA 5x Mode, IOUT = 0mA 10x Mode, IOUT = 0mA Suspend Mode, IOUT = 0mA 7 15 15 0.044 mA mA mA mA hCLPROG (Note 4) Ratio of Measured VBUS Current to CLPROG Program Current 1x Mode 5x Mode 10x Mode Suspend Mode 224 1133 2140 11.3 mA/mA mA/mA mA/mA mA/mA |
