LT3383 ELECTRICAL CHARACTERISTICSThe l denotes the specifications which apply over the specified operatingjunction temperature range, otherwise specifications are at TA = 25°C (Note 2). VIN = PVIN1 = PVIN2 = PVIN3 = PVIN4 = VIN_L1 = VIN_L2 =VIN_L3 = 3.8V. All regulators disabled unless otherwise noted. PARAMETERCONDITIONSMINTYPMAXUNITSLDO Regulator 3 VIN_L3 Input Voltage l 2.35 VIN V Output Voltage ILDO = 1mA l 1.746 1.8 1.854 V Available Output Current l 300 mA VIN_L3 Quiescent Current Regulator Enabled, ILDO = 0A l 14 25 µA VIN_L3 Shutdown Current Regulator Disabled l 0 1 µA VIN Quiescent Current Regulator Enabled l 50 85 µA Line Regulation ILDO =1mA, VIN = 2.7V to 5.5V 0.01 %/V Load Regulation ILDO = 1mA to 300mA 0.05 % Short-Circuit Current Limit 770 mA Dropout Voltage (Note 4) ILDO = 300mA, VLDO3 = 1.8V 280 350 mV Enable Inputs Threshold Rising All Enables Low l 0.75 1.2 V Threshold Falling One Enable High l 0.4 0.7 V Precision Threshold One or More Regulators Previously l 0.370 0.400 0.430 V Enabled Input Pull-Down Resistance 4.5 MΩ PWR_ON Threshold l 0.370 0.400 0.430 V Pull-Down Resistance 4.5 MΩ PWR_ON High to Allow Enables Delay 3 ms PWR_ON High to Inhibit Enables Delay 3 ms PGOOD PGOOD Output Low Voltage IPGOOD = 3mA 0.1 0.4 V PGOOD Output High Leakage Current VPGOOD = 3.8V –0.1 0.1 µA PGOOD Threshold Rising –6 % PGOOD Threshold Falling –8 % Rev. 0 4 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Introduction Step-Down Switching Regulators Power On Sequencing Fault Detection and Reporting Applications Information Thermal Considerations and Board Layout Typical Applications Package Description Typical Application Related Parts
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