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TPS3422: Pushbutton On/Off controller solution that can work with TPS25982

Shlomi Yehezkia
Mastermind 6150 points
Part Number: TPS3422
Other Parts Discussed in Thread: TPS25982, TPS3421, , TPS3420

Hi Team,

On my system I plan to use Momentary on switch (normally open) ,

for that I will need Pushbutton On/Off Controller, (I found LTC2954)

Does TI have a Pushbutton On/Off controller solution that can work with TPS25982? 

Thanks,

Shlomi

 

  • 0
    TI__Genius 12630 points

    Shlomi,

    We do not currently have a device identical to LTC2954. We have pushbutton controllers: TPS3420, TPS3421, and TPS3422. These devices require a button press for certain duration of time before the output resets. The output can either reset for a fixed amount of time or can reset until the button is released. There is no latching functionality with these devices.

    To achieve a simple push-button circuit that latches until the next button press, please see Section 10.1 in this Single Positive-Edge-Triggered D-Type Flip-Flop datasheet: http://www.ti.com/lit/ds/symlink/sn74lvc1g74.pdf

    If you would like to add voltage monitoring, such that the output toggles only when a certain voltage level is detected, you can add a voltage supervisor to the application from section 10.1 above.

    If you want to add an additional interrupt output every time the button is pressed to notify the MCU replicating the function of the INT output of LTC2954, then you must use a dual input voltage supervisor.

    Please let me know the specifics of the application requirements and I can help guide you to the correct solution. Thanks!