LT3579IUFD-1-PBF データシートの表示（PDF） - Linear Technology
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LT3579IUFD-1-PBF Datasheet PDF : 40 Pages
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LT3579/LT3579-1
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
Soft-Start Discharge Current
VSS = 30mV, Current Flows Out of SS pin
Part in FAULT
VSS = 2.1V,
Current Flows into SS Pin
l 5.7
8.7
11.3
μA
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
SHDN Minimum Input Voltage High
SHDN Input Voltage Low
SHDN Pin Bias Current
CLKOUT Output Voltage High
CLKOUT Output Voltage Low
CLKOUT Duty Cycle
CLKOUT Rise Time
CLKOUT Fall Time
GATE Pull Down Current
GATE Leakage Current
FAULT Output Voltage Low
FAULT Leakage Current
FAULT Input Voltage Low Threshold
FAULT Input Voltage High Threshold
Part Exiting FAULT
Active Mode, SHDN Rising
Active Mode, SHDN Falling
Shutdown Mode
VSHDN = 3V
VSHDN = 1.3V
VSHDN = 0V
CCLKOUT = 50pF
CCLKOUT = 50pF
LT3579, TJ = 25°C
LT3579-1, All TJ
CCLKOUT = 50pF
CCLKOUT = 50pF
VGATE = 3V
VGATE = 80V
VGATE = 50V, GATE Off
100μA into FAULT Pin
VFAULT = 40V, FAULT Off
l 30
50
85
mV
l 1.27 1.33 1.41
V
l 1.24
1.3
1.38
V
l
.3
V
40
60
μA
9.5
11.4 13.4
μA
0
0.1
μA
1.9
2.1
2.3
V
100 200
mV
42
%
50
%
12
ns
8
ns
l 800
933 1100
μA
l 800
933 1100
μA
0.01
1
μA
l
150 300
mV
0.01
1
μA
l 700
750
800
mV
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 LT3579E is guaranteed to meet performance specifications
from 0°C to 125°C junction temperature. Specifications over the –40°C
to 125°C operating junction temperature range are assured by design,
characterization and correlation with statistical process controls. The
LT3579I is guaranteed over the full –40°C to 125°C operating junction
temperature range.
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.
35791f
4
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