LT3474 datasheet(5/28 Pages) AD

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LT3755/LT3755-1/LT3755-2

Rev. E

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ELECTRICAL CHARACTERISTICS The

denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VIN = 24V, SHDN/UVLO = 24V, CTRL = 2V, PWM = 5V, 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 LT3755E, LT3755E-1 and LT3755E-2 are 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 LT3755I, LT3755I-1 and LT3755I-2 are

guaranteed to meet performance specifications over the –40°C to 125°C

operating junction temperature range. The LT3755H-2 and LT3577J-2

are guaranteed to meet performance specifications 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.

Note 3: For VIN below 6V, the SHDN/UVLO pin must not exceed VIN for

proper operation.

Note 4: GATE and PWMOUT pins are driven either to GND or INTVCC by

internal switches. Do not connect these pins externally to a power supply.

Note 5: The LT3755 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

Gate Driver

tr GATE Driver Output Rise Time

CL = 3300pF

tf GATE Driver Output Fall Time

CL = 3300pF

GATE Output Low (VOL)

0.05

GATE Output High (VOH)

INTVCC –

0.05

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