Datasheet LT3383 (Analog Devices) - 5

link to page 12 LT3383
ELECTRICAL CHARACTERISTICS Note 1:
Stresses beyond those listed Under Absolute Maximum ratings
Note 3:
The LT3383 includes overtemperature protection that is intended may cause permanent damage to the device. Exposure to any Absolute to protect the device during momentary overload conditions. Junction Maximum rating condition for extended periods may affect device temperature will exceed 150°C when overtemperature protection is active. reliability and lifetime. Continuous operation above the specified maximum operating junction
Note 2:
The LT3383 is tested under pulsed load conditions such that temperature may impair device reliability. TJ ≈ TA. The LT3383E is guaranteed to meet specifications from
Note 4:
Dropout voltage is defined as (VIN_Lx – VLDOx) when VLDOx is 3% 0°C to 85°C junction temperature. Specifications over the –40°C to lower than VLDOx measured with VIN = VIN_Lx = 4.3V. 125°C operating junction temperature range are assured by design,
Note 5:
Dynamic supply current is higher due to the gate charge being characterization and correlation with statistical process controls. The delivered at the switching frequency. LT3383I is guaranteed over the –40°C to 125°C operating junction
Note 6:
Soft-Start measured in test mode with regulator error amplifier in temperature range and the LT3383H is guaranteed over the full –40°C to unity-gain mode. 150°C operating junction temperature range. High junction temperatures degrade operating lifetimes; operating lifetime is derated for junction
Note 7:
The LT3383 will operate before VIN has risen higher than VIN temperatures greater than 125°C. The junction temperature (T undervoltage fault rising (2.65V max) but will shutdown if VIN does not J in °C) is calculated from the ambient temperature (T cross the rising threshold in less than 5 seconds. Please refer to the A in °C) and power dissipation (P Operation section. D, in Watts), and package to junction ambient thermal impedance (JA in Watts/°C ) according to the formula: TJ = TA + (PD • JA). 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. Rev. 0 For more information www.analog.com 5 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Introduction Step-Down Switching Regulators Power On Sequencing Fault Detection and Reporting Applications Information Thermal Considerations and Board Layout Typical Applications Package Description Typical Application Related Parts