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ZHCSOM5D April 2006 – September 2021 LMH6321

PRODUCTION DATA

请参考 PDF 数据表获取器件具体的封装图。

First determine the maximum power dissipated by the buffer, P_D(MAX). For the simple case of the buffer driving a resistive load, and assuming equal supplies, P_D(MAX) is given by:
Equation 7. P_D(MAX) = I_S (2V⁺) + V⁺²/4R_L
where
- I_S = quiescent supply current
Determine the maximum allowable die temperature rise,
Equation 8. T_R(MAX) = T_J(MAX)-T_A(MAX) = P_D(MAX)θ_JA
Using the calculated value of T_R(MAX) and P_D(MAX) the required value for junction to ambient thermal resistance can be found:
Equation 9. θ_JA = T_R(MAX)/P_D(MAX)
Finally, using this value for θ_JA choose the minimum value of copper area from Figure 6-4.