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LTC3539EDCB-PBF Datasheet(PDF) 3 Page - Linear Technology |
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LTC3539EDCB-PBF Datasheet(HTML) 3 Page - Linear Technology |
3 / 12 page LTC3539/LTC3539-2 3 3539f ELECTRICAL CHARACTERISTICS Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LTC3539E/LTC3539E-2 is guaranteed to meet performance specifications from 0°C to 85°C. Specifications over –40°C to 85°C operating temperature range are assured by design, characterization and correlation with statistical process controls. Note 3: Specification is guaranteed by design and not 100% tested in production. PARAMETER CONDITIONS MIN TYP MAX UNITS Maximum Duty Cycle VFB = 1.15V l 87 90 % Minimum Duty Cycle VFB = 1.3V l 0% Switching Frequency LTC3539 LTC3539-2 l l 0.7 1.8 1 2 1.3 2.4 MHz MHz MODE Input High Voltage 0.88 V MODE Input Low Voltage 0.3 V MODE Input Current VMODE = 1.2V 0.3 1 μA SHDN Input High Voltage 0.88 V SHDN Input Low Voltage 0.3 V SHDN Input Current VSHDN = 1.2V VSHDN = 3.3V 0.3 1 1 2 μA μA The l denotes the specifications which apply over the specified temperature range of –40°C to 85°C, otherwise specifications are at TA = 25°C. VIN = 1.2V, VOUT = 3.3V, unless otherwise noted. Note 4: Current measurements are made when the output is not switching. Note 5: This IC includes overtemperature protection that is intended to protect the device during momentary overload conditions. Junction temperature will exceed 125°C when overtemperature protection is active. Continuous operation above the specified maximum operating junction temperature may result in device degradation or failure. Note 6: Failure to solder the exposed backside of the package to the PC board ground plane will result in a thermal resistance much higher than 60°C/W. |
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