LTC3423/LTC3424 WWWUUWUABSOLUTE AXI U RATI GSPACKAGE/ORDER I FOR ATIO(Note 1) VIN, VOUT, VDD 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 LTC3423EMS SHDN, FB, MODE Voltages ... – 0.5V to 6V V 3 IN 8 FB SW 4 7 VOUT LTC3424EMS Operating Temperature Range (Note 2) .. – 40°C to 85°C GND 5 6 VDD 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 LTQM JA = 130°C/ W 1 LAYER BOARD θJA = 100°C/ W 4 LAYER BOARD LTQN 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, VDD = 3.3V, VOUT = 1.8V, unless otherwise noted.PARAMETERCONDITIONSMINTYPMAXUNITS VDD Input Voltage Range ● 2.7 5.5 V VIN Operating Voltage Range (Note 4) ● 0.5 5.5 V Output Voltage Adjust Range ● 1.5 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 0.21 Ω NMOS Current Limit LTC3423 ● 1 1.6 A LTC3424 ● 2 2.8 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 ∆I = –5µA to 5µA, VC = VFB 85 µmhos 34234f 2
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