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LT3581

3581f

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 LT3581E is guaranteed to meet performance specifications

from 0°C to 125°C. Specifications over the –40°C to 125°C junction

temperature range are assured by design, characterization and correlation

with statistical process controls.

elecTrical characTerisTics The

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

5.7

8.7

11.3

µA

Soft-Start Discharge Current

Part in FAULT, VSS = 2.1V, Current Flows into SS Pin

5.7

8.7

11.3

µA

Soft-Start High Detection Voltage

Part in FAULT

1.65

1.8

1.95

Soft-Start Low Detection Voltage

Part Exiting FAULT

SHDN Minimum Input Voltage High

Active Mode, SHDN Rising

Active Mode, SHDN Falling

1.27

1.24

1.33

1.3

1.41

1.38

SHDN Input Voltage Low

Shutdown Mode

0.3

SHDN Pin Bias Current

VSHDN = 3V

VSHDN = 1.3V

VSHDN = 0V

9.7

11.4

13.4

0.1

µA

CLKOUT Output Voltage High

CCLKOUT = 50pF

1.9

2.1

2.3

CLKOUT Output Voltage Low

CCLKOUT = 50pF

200

CLKOUT Duty Cycle

TJ = 25°C

CLKOUT Rise Time

CCLKOUT = 50pF

CLKOUT Fall Time

CCLKOUT = 50pF

GATE Pull Down Current

VGATE = 3V

VGATE = 80V

800

933

1100

µA

GATE Leakage Current

VGATE = 50V, GATE Off

0.01

µA

FAULT Output Voltage Low

100μA into FAULT Pin

150

300

FAULT Leakage Current

VFAULT = 40V, FAULT Off

0.01

µA

FAULT Input Voltage Low

700

750

800

FAULT Input Voltage High

950

1000

1050

Note 3: Current limit guaranteed by design and/or correlation to static test.

Note 4: 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 over the specified maximum operating junction

temperature may impair device reliability.

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