LT3518 Ver la hoja de datos (PDF) - Linear Technology
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LT3518 Datasheet PDF : 20 Pages
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LT3518
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. (Note 2) VIN = 5V, SHDN = 5V, PWM = 5V unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
TGEN Input High Voltage
1.5
V
TGEN Input Low Voltage
0.4
V
TGEN Pin Bias Current
TGEN = 5V
100
200
μA
VREF Pin Voltage
VREF Pin Voltage Line Regulation
Gate Turn-On Delay
Gate Turn-Off Delay
Top Gate Drive VGS (VISP – VTG)
IREF = –100μA
3V < VIN < 40V
CLOAD = 1nF Between ISP and TG
CLOAD = 1nF Between ISP and TG
VISP = 24V, TGEN = 5V
PWM = 0V
l 1.96
2
2.04
V
0.03
%/V
200
ns
200
ns
7
V
0
0.3
V
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 LT3518E 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
LT3518I is guaranteed over the full –40°C to 125°C operating junction
temperature range. The LT3518H 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: Absolute maximum voltage at VIN, SHDN, PWM and TGEN pins
is 40V for nonrepetitive 1 second transients and 30V for continuous
operation.
Note 4: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed the maximum operating junction temperature
when overtemperature protection is active. Continuous operation above
the specified maximum operating junction temperature may impair device
reliability.
3518fe
4
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