TPD4E001: current rating

Connie Lu1

Part Number: TPD4E001

Hi team,

My customer use the TPD4E001 in some of their designs. They want to use its diode array to clamp voltage levels. Can it safely carry 10 mA continuously? The datasheet does have a voltage drop test for that level but does not make any statements whether or not this is permissible.

For example, they might clamp a 5V IO to 3.3V so they can feed it directly to an FPGA. They would place a 10K resistor between the IO and the clamp. So 1.7V/10K = 170uA would flow in the diode that case.

Best Regards,

Connie

over 4 years ago

0 Matt Smith over 4 years ago

TI__Genius 10716 points

Hi Connie,

I would not recommend that your customer uses this device for that purpose. This device is designed to handle ESD and surge events which only last for 100 ns and 20 us, respectively. Having a constant current going through the reversed biased diode could run the risk of burning up the part.

Regards,

Matt Smith

0 Connie Lu1 over 4 years ago in reply to Matt Smith

TI__Intellectual 2130 points

Hi Matt,

Thank you. I will recommend customer to use voltage translators then.

Regards,

Connie

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TPD4E001: current rating