LTC3401 WWWUUWUABSOLUTE AXI U RATI GSPACKAGE/ORDER I FOR ATIO(Note 1) VIN, VOUT Voltages .. – 0.5V to 6V ORDER PART SW Voltage ... – 0.5V to 6V TOP VIEW NUMBER V R 1 10 SHDN C, Rt Voltages ... – 0.5V to (VOUT + 0.3V) t MODE 2 9 VC LTC3401EMS PGOOD, SHDN, FB, MODE Voltages ... – 0.5V to 6V V 3 IN 8 FB SW 4 7 V Operating Temperature Range (Note 2) .. – 40°C to 85°C OUT GND 5 6 PGOOD Storage Temperature Range ... – 65°C to 125°C MS PACKAGE 10-LEAD PLASTIC MSOP MS PART MARKING Lead Temperature (Soldering, 10 sec).. 300°C TJMAX = 125°C θ LTPG JA = 130°C/ W 1 LAYER BOARD Order Options Tape and Reel: Add #TR θJA = 100°C/ W 4 LAYER BOARD Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF Lead Free Part Marking: http://www.linear.com/leadfree/ Consult LTC Marketing for parts specified with wider operating temperature ranges. ELECTRICAL CHARACTERISTICS The ● denotes specifications that apply over the full operating temperature range, otherwise specifications are at TA = 25 ° C.VIN = 1.2V, VOUT = 3.3V unless otherwise noted.PARAMETERCONDITIONSMINTYPMAXUNITS Minimum Start-Up Voltage ILOAD < 1mA 0.85 1.0 V Minimum Operating Voltage (Note 4) ● 0.5 V Output Voltage Adjust Range ● 2.6 5.5 V Feedback Voltage ● 1.22 1.25 1.28 V Feedback Input Current VFB = 1.25V 1 50 nA Quiescent Current—Burst Mode Operation VC = 0V, MODE/SYNC = 3.3V (Note 3) 38 65 μA Quiescent Current—SHDN SHDN = 0V, Not Including Switch Leakage 0.1 1 μA Quiescent Current—Active VC = 0V, MODE/SYNC = 0V, Rt = 300k (Note 3) 440 800 μA NMOS Switch Leakage 0.1 5 μA PMOS Switch Leakage 0.1 10 μA NMOS Switch On Resistance 0.16 Ω PMOS Switch On Resistance 0.18 Ω NMOS Current Limit ● 1 1.6 A NMOS Burst Current Limit 0.66 A Maximum Duty Cycle Rt = 15k ● 80 85 % Minimum Duty Cycle ● 0 % Frequency Accuracy Rt = 15k ● 1.6 2 2.4 MHz MODE/SYNC Input High 1.4 V MODE/SYNC Input Low 0.4 V MODE/SYNC Input Current VMODE/SYNC = 5.5V 0.01 1 μA Error Amp Transconductance ΔI = –5μA to 5μA, VC = VFB 85 μmhos PGOOD Threshold Referenced to Feedback Voltage – 6 – 9 – 12 % 3401fb 2
