Datasheet LTC3446 (Analog Devices) - 2

LTC3446
absoluTe MaxiMuM raTings pin conFiguraTion (Note 1)
V TOP VIEW IN, LVIN to GND ... – 0.3V to 6V MODESEL, ENBUCK, ENLDO1, MODESEL 1 14 SW ENLDO2 to GND .. –0.3V to 6V VIN 2 13 ENBUCK BUCKFB to GND .. –0.3V to 6V ITH 3 12 BUCKFB PGOOD 4 15 11 ENLDO1 LVFB1, LVFB2 to GND .. –0.3V to 6V LVOUT1 5 10 LVFB1 ITH to GND ... –0.3V to the Lesser of (VIN + 0.3V) or 3V LVIN 6 9 LVFB2 SW to GND ..–0.3V to the Lesser of (V LVOUT2 7 8 ENLDO2 IN + 0.3V) or 6V LVOUT1, LVOUT2 DE PACKAGE to GND .. –0.3V to the Lesser of (LV 14-LEAD (4mm × 3mm) PLASTIC DFN IN + 0.3V) or 6V T PGOOD to GND .. –0.3V to 6V JMAX = 125°C, θJA = 43°C/W EXPOSED PAD (PIN 15) IS GND, MUST BE SOLDERED TO PCB LVOUT1, LVOUT2 Short-Circuit to GND Duration ... Indefinite Operating Junction Temperature Range (Note 2) .. –40°C to 125°C Storage Temperature Range .. –65°C to 150°C
orDer inForMaTion LEAD FREE FINISH TAPE AND REEL PART MARKING
*
PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3446EDE#PBF LTC3446EDE#TRPBF 3446 14-Lead (4mm × 3mm) Plastic DFN –40°C to 125°C LTC3446IDE#PBF LTC3446IDE#TRPBF 3446 14-Lead (4mm × 3mm) Plastic DFN –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. Consult LTC Marketing for information on non-standard lead based finish parts. 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/
elecTrical characTerisTics The
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denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 3.6V unless otherwise specified. (Note 2) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input Voltage Range (Note 3) ● 2.7 5.5 V VUVLO VIN Undervoltage Lockout Threshold VIN Rising ● 2.37 2.5 V VIN Undervoltage Lockout Hysteresis 10 30 mV IQ VIN Quiescent Current (Note 4) Buck Enabled Only, Not Sleeping VBUCKFB = 0V, ISW = 0mA 310 500 µA Buck Enabled Only, Sleeping VBUCKFB = 1V, ISW = 0mA 50 75 µA One LDO Enabled Only VLVIN = 1.5V, 10µA LDO Output Load 75 100 µA All Three Outputs Enabled, Buck Not Sleeping VBUCKFB = 0V, ISW = 0mA, VLVIN = 1.5V, 400 600 µA 10µA Output Load on Each LDO All Three Outputs Enabled, Buck Sleeping VBUCKFB = 1V, ISW = 0mA, VLVIN = 1.5V, 140 210 µA 10µA Load on Each LDO Shutdown VENBUCK = 0V, VENLDO1 = 0V, VENLDO2 = 0V 1 µA 3446ff 2 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Package Description Revision History Typical Application Related Parts