link to page 2 LTC3307A ELECTRICAL CHARACTERISTICSNote 1: Stresses beyond those listed under Absolute Maximum Ratings these specifications is determined by specific operating conditions in may cause permanent damage to the device. Exposure to any Absolute conjunction with board layout, the rated package thermal impedance, Maximum Rating condition for extended periods may affect device and other environmental factors. The junction temperature (TJ in °C) is reliability and lifetime. calculated from ambient temperature (TA in °C) and power dissipation (PD Note 2: The LTC3307A is tested under pulsed load conditions such in Watts) according to the formula: that TJ ≈ TA. The LTC3307AE is guaranteed to meet specifications from TJ = TA + (PD • θJA), where θJA (in °C/W) is the package thermal 0°C to 85°C junction temperature. Specifications over the –40°C to impedance. See High Temperature Considerations section for more 125°C operating junction temperature range are assured by design, details. characterization, and correlation with statistical process controls. The The LTC3307A includes overtemperature protection that protects the LTC3307AI is guaranteed over the –40°C to 125°C operating junction device during momentary overload conditions. Junction temperatures will temperature range. The LTC3307AJ and LTC3307AH are guaranteed exceed 150°C when overtemperature protection is engaged. Continuous over the –40°C to 150°C operating junction temperature range. The operation above the specified maximum operating junction temperature LTC3307AMP is guaranteed over the –55°C to 150°C operating junction may impair device reliability. temperature range. High junction temperatures degrade operating Note 3: Supply current specification does not include switching currents. lifetimes; operating lifetime is derated for junction temperatures above Actual supply currents will be higher. 125°C. Note that the maximum ambient temperature consistent with Rev. A 4 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Applications Information Typical Applications Package Description Revision History Typical Application Related Parts
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