LTC3401 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 PGOOD Low Voltage IPGOOD = 1mA 0.1 0.2 V VOUT = 1V, IPGOOD = 20μA 0.1 0.4 V PGOOD Leakage VPGOOD = 5.5V 0.01 1 μA SHDN Input High VSHDN = VIN = VOUT 1 V SHDN Input Low 0.4 V SHDN Input Current VSHDN = 5.5V 0.01 1 μA Thermal Shutdown 170 °C Note 1: Stresses beyond those listed under Absolute Maximum Ratings temperature range are assured by design, characterization and correlation may cause permanent damage to the device. Exposure to any Absolute with statistical process controls. Maximum Rating condition for extended periods may affect device Note 3: Current is measured into VOUT since the supply current is reliability and lifetime. bootstrapped to the VOUT pin and in the application will reflect to the input Note 2: The LTC3401 is guaranteed to meet performance specifications supply by (VOUT/VIN) • I/ Efficiency. The outputs are not switching. from 0°C to 70°C. Specifications over the –40°C to 85°C operating Note 4: Once the output is started, the IC is not dependant upon the VIN supply. WUTYPICAL PERFOR A CE CHARACTERISTICSSW Pin and Inductor Current (IC)in Discontinuous Mode. Ringing Control Circuitry Eliminates HighSwitching Waveform on SW PinFrequency RingingTransient Response 5mA to 50mA IL 50mA/DIV V 0A OUT 100mV/DIV SW 1V/DIV SW 1V/DIV 50mA IOUT 0V 5mA 50ns/DIV 3401 G01 200ns/DIV 3401 G02 COUT = 22μF 200μs/DIV 3401 G03 L = 3.3μH fOSC = 1MHz 3401fb 3
