LTC3370 datasheet(4/26 Pages) AD

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LTC3307A

Rev. A

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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 LTC3307A is tested under pulsed load conditions such

that TJ ≈ TA. The LTC3307AE is guaranteed to meet specifications from

0°C to 85°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

LTC3307AI is guaranteed over the –40°C to 125°C operating junction

temperature range. The LTC3307AJ and LTC3307AH are guaranteed

over the –40°C to 150°C operating junction temperature range. The

LTC3307AMP is guaranteed over the –55°C to 150°C operating junction

temperature range. High junction temperatures degrade operating

lifetimes; operating lifetime is derated for junction temperatures above

125°C. Note that the maximum ambient temperature consistent with

these specifications is determined by specific operating conditions in

conjunction with board layout, the rated package thermal impedance,

and other environmental factors. The junction temperature (TJ in °C) is

calculated from ambient temperature (TA in °C) and power dissipation (PD

in Watts) according to the formula:

TJ = TA + (PD • θJA), where θJA (in °C/W) is the package thermal

impedance. See High Temperature Considerations section for more

details.

The LTC3307A includes overtemperature protection that protects the

device during momentary overload conditions. Junction temperatures will

exceed 150°C when overtemperature protection is engaged. Continuous

operation above the specified maximum operating junction temperature

may impair device reliability.

Note 3: Supply current specification does not include switching currents.

Actual supply currents will be higher.

ELECTRICAL CHARACTERISTICS

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