The maximum IC junction temperature must be restricted to 125°C under normal operating conditions. To calculate the maximum allowable dissipation, P_D(max) for a given output current and ambient temperature, use Equation 5 as a guideline:

Equation 5.

Where,

P_D(max) = maximum allowable power dissipation

T_J(max) = maximum allowable junction temperature

T_A = ambient temperature for the device

θ_JA = junction to air thermal impedance. See the Thermal Information section.