TS3L501E: Can I say TS3L501E I/O pin current limit value is 128mA?

Hey Adam,

I am reluctant to commit 128mA. Or, It depends on what your customer is really pursing.


1. For short term reliability considerations, at 25C, our device can survive under 128mA. You can expect at 85C, our device cannot support 128mA without the risk of permanently damaging the device.


2. For normal operating mode, I am willing to commit 40mA max since the datasheet says ron is measured with 40mA load.


3. The additional question is how much voltage drop is allowed across this switch. The typical resistance of our switch is 4 Ohms and at 85C, it can be 8Ohms. If the customer decides to conduct 40mA current, the voltage drops is 320mV which might eat up their Vih budget for their downstream device.