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4-1. Calculating the power dissipation of a load switch IC and heat dissipation
The power dissipation of a load switch IC can be calculated as shown above.
The on-resistance of the load switch IC depends on temperature. Use an appropriate on-resistance value according to the actual usage temperature.
Note that the power dissipation and thermal resistance values in the datasheet are the values under the specified board conditions. It is therefore necessary to evaluate load switch ICs carefully to ensure that they work properly under actual usage conditions.
Application note: Basics of Load Switch ICs
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