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  • TPS3809: 200ms step on RESET at VDD power on

    Part Number: TPS3809 Other Parts Discussed in Thread: TEST Hi team, For TPS3809K33, my customer is getting below test scope at VDD power on, there is a ~200mV step with duration of 200ms before the RESET goes high. I assume the 200ms is the delay time…

  • TPS3809: Are pulse width spec will change when the VDD very close to the toggle threshold?

    TI Thinks Resolved
    Part Number: TPS3809 Other Parts Discussed in Thread: TLV809E Hi Teams Customer have questions about pulse width parameter of TPS3809. In datasheet, tw spec is 10us under Vth+0.2V or Vth-0.2V condition. (Shown in below) Customer want to know if the VDD…

  • TPS3809: Abnormal behavior at startup

    TI Thinks Resolved
    Part Number: TPS3809 Hi team, My customer found below behavior of TPS3809K33, as you can see at the startup, well after 3.3V VDD is established, the reset output stayed at 1.1V for about 200ms, then goes up to 3.3V. This seems not the normal behavior…

  • RE: TPS3809: TPS3809L30DBVR /RESET pin delay time issue

    Hi Paul, This is intended behavior and occurs because of Vpor(power-on-reset). This isn't detailed well in the TPS3809 datasheet, but you can take a look at the TLV809E or TPS3840 for Vpor description. This is an unavoidable pulse that details the minimum…
    • Answered

  • TPS3809: ESD rating

    Resolved
    Part Number: TPS3809 Hi team, Good day. Our customer would like to know the HBM, CDM and MM ESD rating for the TPS3809K33DBVR and TPS3809K33DBVT. Thank you in advance for your help. Regards, Carlo
    • Resolved

  • RE: TPS3809: reset output abnormal

    George, This is normal behavior for all supervisors that are push-pull output type or all supervisors that are open-drain output type with the output pulled-up to the VDD supply. This is caused because the output is directly connected to the VDD voltage…

  • TPS3809: R1, R2 resistor value

    TI Thinks Resolved
    Part Number: TPS3809 Hi team, Could you please help to share the R1, R2 value of TPS3809I50DBVR in the datasheet as below? Thanks.
    • Answered

  • TPS3809-Q1: Undefined Behavior of RESET Output

    Resolved
    Part Number: TPS3809-Q1 Other Parts Discussed in Thread: TPS3809 , TEST Hi team, I see in timing diagram of TPS3809 it says For VDD< 1.1 V, the reset output is Undefined Behavior, does it mean reset output voltage can be any level <1.1V? Actually I…
    • Resolved

  • TPS3809-Q1: Change detection delay time

    TI Thinks Resolved
    Part Number: TPS3809-Q1 Hello! In one of my project I use TPS3809L30QDBVRQ1 type of a voltage supervisor. It has fixed reset delay time of a 200 ms (typical) and detection delay time (tPHL) of an around 1 us. I use this voltage supervisor to measure voltage…
    • Answered

  • TPS3809: Delay time across operating temperature

    Resolved
    Part Number: TPS3809 Hi E2E, Good day. The delay time of TPS3809 is from 120ms to 280ms, is this true across the operating temperature range or for 25°C only? Regards, Carlo
    • Resolved

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