TPS562201: Is there any possibility that reverse current flow from EN pin to IN pin through inside the device?

Part Number: TPS562201

Tool/software:

Hi experts,

our customer have additional question about original thread.

Chen said as followings

> EN pin voltage higher than VIN pin when turn-off input voltage, so you need to add clamp diode between EN and VIN pin. 

And customer wants to know the possibility that a reverse current flow from the EN pin to VIN through inside the IC

I saw a functional block diagram but I couldn't understand.

Thanks and regards,

Tsuyoshi 

  • Hi Tsuyoshi

    Our colleagues are on Chinese New Year and please expect a delay of the response.

    Thanks.

    BRs

    Ruby

  • Hi,

    Normally there is ESD clamp diode between EN pin and VIN pin inside the IC, it's VF is about 0.7V, this diode was not shown on Block Diagram as it almost has no impact on chip function in normal application.