Datasheet LTC3409A (Analog Devices) - 2

LTC3409A
ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1)
Input Supply Voltage ... –0.3V to 6V TOP VIEW RUN, VFB, MODE, SYNC Voltages . –0.3V to (VIN + 0.3V) V 1 8 FB SYNC SW Voltage ... –0.3V to (VIN + 0.3V) GND 2 7 RUN Operating Temperature Range (Note 2) ..–40°C to 85°C 9 VIN 3 6 SW Junction Temperature (Note 3) ... 125°C VIN 4 5 MODE Storage Temperature Range .. –65°C to 125°C DD PACKAGE 8-LEAD (3mm s 3mm) PLASTIC DFN TJMAX = 125°C, θJA = 43°C/W EXPOSED PAD (PIN 9) IS GND, MUST BE SOLDERED TO PCB
ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE
LTC3409AEDD#PBF LTC3409AEDD#TRPBF LFGY 8-Lead (3mm × 3mm) Plastic DFN –40°C to 85°C LTC3409AIDD#PBF LTC3409AIDD#TRPBF LFGY 8-Lead (3mm × 3mm) Plastic DFN –40°C to 85°C Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *Temperature grades are identifi ed by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based fi nish parts. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifi cations, go to: http://www.linear.com/tapeandreel/
The ELECTRICAL CHARACTERISTICS
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denotes specifi cations which apply over the full operating temperature range, otherwise specifi cations are TA = 25°C. VIN = 2.2V unless otherwise specifi ed. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
VIN Input Voltage Range l 1.6 5.5 V VFB Regulated Feedback Voltage (Note 4) TA = 25°C 0.604 0.612 0.620 V (Note 4) 0°C ≤ TA ≤ 85°C 0.600 0.612 0.624 V (Note 4) –40°C ≤ TA ≤ 85°C l 0.598 0.612 0.626 V IVFB Feedback Current VFB = 0.612V ±30 nA ΔVOVL ΔVFBOVL Overvoltage Lockout ΔVOVL = ΔVFBOVL – VFB (Note 6) 35 61 85 mV ΔV l FB Reference Voltage Line Regulation 1.6V < VIN < 5.5V (Note 4) 0.04 0.4 %/V 1.9V ≤ VIN ≤ 3.6V, 0°C ≤ TA ≤ 85°C (Note 4) 0.05 0.5 % IPK Peak Inductor Current VFB = 0.5V or VOUT = 90% 0.75 1 1.3 A VLOADREG Output Voltage Load Regulation VOUT = 1.8V, VMODE = 0V, 1mA < ILOAD < 210mA, 0.2 0.5 % 0°C ≤ TA ≤ 85°C (Note 8) VRUN RUN Threshold l 0.3 0.65 1.1 V IRUN RUN Leakage Current VRUN = 0V or = 2.2V 0.01 1 μA VMODE MODE Threshold l 0.3 0.65 1.1 V IMODE MODE Leakage Current VMODE = 0V or = 2.2V 0.01 1 μA 3409af 2