LT3496
4
3496ff
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 5V, V
SHDN
= 5V, CAP1, CAP2, CAP3 = 5V, PWM1, PWM2, PWM3 = 5V,
f
ADJ
= 0.5V, CTRL1, CTRL2, CTRL3 = 1.5V, OVP1, OVP2, OVP3 = 0V, unless otherwise noted.
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 LT3496E 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
LT3496I is guaranteed over the full –40°C to 125°C operating junction
temperature range. The LT3496H is guaranteed over the full –40°C to
150°C operating junction temperature range. High junction temperatures
degrade operating lifetimes. Operating lifetime is derated at junction
temperatures greater than 125°C.
electrical characteristics
Note 3: Current flows into pin. Current limit and switch V
CESAT
is
guaranteed by design and/or correlation to static test.
Note 4: Absolute maximum voltage at the V
IN
and SHDN pins is 40V for
nonrepetitive 1 second transients, and 30V for continuous operation.
Note 5: Gate turn-on/turn-off delay is measured from 50% level of PWM
voltage to 90% level of gate on/off voltage.
Note 6: The LT3496 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 operating above
the specified maximum operating junction temperature may impair device
reliability.
PARAMETER CONDITIONS MIN TYP MAX UNITS
SHDN Input Low Voltage 0.4 V
SHDN Input High Voltage 1.5 V
SHDN Pin Current V
SHDN
= 5V, Current Into Pin 65 100 µA
PWM1, PWM2, PWM3 Input Low Voltage 0.4 V
PWM1, PWM2, PWM3 Input High Voltage 1.2 V
PWM1, PWM2, PWM3 Pin Current Current Into Pin 160 210 µA
Gate Off Voltage
(CAP1 – TG1, CAP2 – TG2, CAP3 – TG3)
CAP1, CAP2, CAP3 = 40V,
PWM1, PWM2, PWM3 = 0V
0.1 0.3 V
Gate On Voltage
(CAP1 – TG1, CAP2 – TG2, CAP3 – TG3)
CAP1, CAP2, CAP3 = 40V 5.5 6.5 7.5 V
Gate Turn-On Delay C
LOAD
= 300pF, CAP1, CAP2, CAP3 = 40V (Note 5) 110 ns
Gate Turn-Off Delay C
LOAD
= 300pF, CAP1, CAP2, CAP3 = 40V (Note 5) 110 ns
