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TPS563219A: For PG PIN Control

Daisuke Nomura
Intellectual 950 points
Part Number: TPS563219A
Other Parts Discussed in Thread: TPS564257, TPS563257, TPS74801, TPS51206

Tool/software:

[Question]

Regarding the PG pin, will it be driven low while EN is low (deasserted)? 

[Background]

I was concerned that when pulling up the PG pin with an external power supply other than Vout

it might accidentally output high, so I asked. (This was not mentioned in the datasheet.)

Could you answer it?  

Subject device: 

TPS563219A

TPS564257

TPS563257

TPS74801

TPS51206

Thanks and best regards,

Daisuke Nomura

  • 0
    TI__Intellectual 2930 points

    Hello Daisuke,

    The PG signal will remain low even if it is tied to external power supply.

    This is explained in datasheet in 7.3.3  section that PG becomes HIGH when the output voltage becomes within 10% of the target value

    so as soon as Vin comes, PG signal will go low.

    Thanks,

    Hitesh Chandwani