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TPS3899-Q1: Inquiry about RESEST pin operation in abnormal conditions

JH Shin
Mastermind 7840 points
Part Number: TPS3899-Q1

Hello,

My customer considers using the TPS3899DL01DSERQ1 with the follwoing conditions.

How does RESET# work when V1 power is shorted to GND or V1 power is not supplied due to a disconnection?

Thank you.

JH

  • 0
    TI__Expert 7135 points

    Hi JH,

    If the Vdd falls below Vpor = 700 mV, the output (nRESET) will not be controlled/guaranteed. TI states that this may cause an output that cannot be determined. 

    TI also recommends placing a 0.1 uF decoupling capacitor close to the Vdd pin.

    Hope this helps,

    Joshua Austria