AN4325

2.4 GPIO Driver Strength

The technical documentation of the UHF products specifies the current for a voltage drop of 10%. All GPIO pins from the supported products are protected against shortage. Therefore, larger current can be driven if a higher voltage drop is accepted. Calculate the available current and the corresponding voltage drop by calculating the RDS(on) with the given parameters from the data sheet.

Note: A shortage of multiple GPIO pins can lead to thermal overstress and damage the product.

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