Datasheet LT3581 (Analog Devices) - 4

LT3581
ELECTRICAL CHARACTERISTICS The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. VIN = 5V, VSHDN = VIN, VFAULT = VIN, unless otherwise noted. (Note 2). PARAMETER CONDITIONS MIN TYP MAX UNITS
Soft-Start Charge Current VSS = 30mV, Current Flows Out of SS pin l 5.7 8.7 11.3 µA Soft-Start Discharge Current Part in FAULT, VSS = 2.1V, Current Flows into SS Pin l 5.7 8.7 11.3 µA Soft-Start High Detection Voltage Part in FAULT l 1.65 1.8 1.95 V Soft-Start Low Detection Voltage Part Exiting FAULT l 30 50 85 mV SHDN Minimum Input Voltage High Active Mode, SHDN Rising (LT3581E, LT3581I) l 1.27 1.33 1.41 V Active Mode, SHDN Rising (LT3581H) l 1.27 1.33 1.44 V Active Mode, SHDN Falling (LT3581E, LT3581I, LT3581H) l 1.24 1.3 1.38 V SHDN Input Voltage Low Shutdown Mode l 0.3 V SHDN Pin Bias Current VSHDN = 3V 40 60 µA VSHDN = 1.3V 9.7 11.4 13.4 µA VSHDN = 0V 0 0.1 µA CLKOUT Output Voltage High CCLKOUT = 50pF 1.9 2.1 2.3 V CLKOUT Output Voltage Low CCLKOUT = 50pF 5 200 mV CLKOUT Duty Cycle TJ = 25°C 42 % CLKOUT Rise Time CCLKOUT = 50pF 12 ns CLKOUT Fall Time CCLKOUT = 50pF 8 ns GATE Pull Down Current VGATE = 3V (LT3581E, LT3581I) l 800 933 1100 µA VGATE = 3V (LT3581H) l 700 900 1100 µA VGATE = 80V (LT3581E, LT3581I, LT3581H) l 800 933 1100 µA GATE Leakage Current VGATE = 50V, GATE Off 0.01 1 µA FAULT Output Voltage Low 50μA into FAULT Pin (LT3581E, LT3581I) l 100 300 mV 50μA into FAULT Pin (LT3581H) l 100 400 mV FAULT Leakage Current VFAULT = 40V, FAULT Off 0.01 1 µA FAULT Input Voltage Low l 700 750 800 mV FAULT Input Voltage High l 950 1000 1050 mV
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings guaranteed over the full –40°C to 150°C operating junction temperature may cause permanent damage to the device. Exposure to any Absolute range. Operating lifetime is derated at junction temperatures greater than Maximum Rating condition for extended periods may affect device 125°C. reliability and lifetime.
Note 3:
Current limit guaranteed by design and/or correlation to static test.
Note 2:
The LT3581E is guaranteed to meet performance specifications
Note 4:
This IC includes overtemperature protection that is intended from 0°C to 125°C. Specifications over the –40°C to 125°C junction to protect the device during momentary overload conditions. Junction temperature range are assured by design, characterization and correlation temperature will exceed 150°C when overtemperature protection is active. with statistical process controls. The LT3581I is guaranteed over the full Continuous operation over the specified maximum operating junction –40°C to 125°C operating junction temperature range. The LT3581H is temperature may impair device reliability. 3581fb 4 For more information www.linear.com/LT3581 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram State Diagram Operation Applications Information Appendix Typical Applications Typical Application Related Parts