The maximum safety temperature, TS
, has the same value as the maximum junction temperature, TJ
, specified for the device. The IS
parameters represent the safety current and safety power, respectively. Do not exceed the maximum limits of IS
. These limits vary with the ambient temperature, TA
The junction-to-air thermal resistance, RθJA
, in the Thermal Information
table is that of a device installed on a high-K test board for leaded surface-mount packages. Use these equations to calculate the value for each parameter:
× P, where P is the power dissipated in the device.
, where TJ(max)
is the maximum junction temperature.
, where LDOINmax
is the maximum LDO input voltage and DVDDmax
is the maximum controller-side supply voltage.