LT3581IMSE-TRPBF 查看數據表（PDF） - Linear Technology
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LT3581IMSE-TRPBF Datasheet PDF : 36 Pages
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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
Soft-Start High Detection Voltage
Part in FAULT, VSS = 2.1V, Current Flows into SS Pin
Part in FAULT
l 5.7
8.7
11.3
µA
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
CLKOUT Output Voltage High
CLKOUT Output Voltage Low
VSHDN = 3V
VSHDN = 1.3V
VSHDN = 0V
CCLKOUT = 50pF
CCLKOUT = 50pF
40
60
µA
9.7
11.4 13.4
µA
0
0.1
µA
1.9
2.1
2.3
V
5
200
mV
CLKOUT Duty Cycle
TJ = 25°C
42
%
CLKOUT Rise Time
CLKOUT Fall Time
GATE Pull Down Current
GATE Leakage Current
FAULT Output Voltage Low
CCLKOUT = 50pF
CCLKOUT = 50pF
VGATE = 3V (LT3581E, LT3581I)
VGATE = 3V (LT3581H)
VGATE = 80V (LT3581E, LT3581I, LT3581H)
VGATE = 50V, GATE Off
50μA into FAULT Pin (LT3581E, LT3581I)
50μA into FAULT Pin (LT3581H)
12
ns
8
ns
l 800
933 1100
µA
l 700
900 1100
µA
l 800
933 1100
µA
0.01
1
µA
l
100
300
mV
l
100
400
mV
FAULT Leakage Current
FAULT Input Voltage Low
VFAULT = 40V, FAULT Off
0.01
1
µA
l 700
750
800
mV
FAULT Input Voltage High
l 950 1000 1050
mV
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. The LT3581I is guaranteed over the full
–40°C to 125°C operating junction temperature range. The LT3581H is
guaranteed over the full –40°C to 150°C operating junction temperature
range. Operating lifetime is derated at junction temperatures greater than
125°C.
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 150°C when overtemperature protection is active.
Continuous operation over the specified maximum operating junction
temperature may impair device reliability.
3581fb
4
For more information www.linear.com/LT3581
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