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Original question:

TPS7A16: TPS7A1650 VOUT VS Output Current Curve

TPS7A16: How to check whether it is a brick wall current limit or foldback current limit LDO

Michael Huang3
Intellectual 2460 points
Part Number: TPS7A16
Other Parts Discussed in Thread: TPS7B69-Q1

Hi team,

I know TPS7A16 current limit scheme is brick wall current limit. What about TPS7B69-Q1? 

Or in another word, if the datasheet don't have curve, how can we know if its current limit scheme? Default is 'brick wall' ?

Thanks

Michael

  • 0
    TI__Guru 55940 points
    Hi Michael,

    TPS7B69-Q1 has a brick wall current limit. You are correct that the majority of devices have a brick wall current limit.

    In general if a device has a different current than brick wall, it will be called out in the device datasheet. In addition a device with foldback current limit will have current limit specified under multiple conditions including short circuit and when Vout is forced to another voltage. Many devices with foldback current limit will also have a typical characteristic curve showing current limit.

    Very Respectfully,
    Ryan
  • 0 in reply to Ryan Eslinger
    TI__Intellectual 2460 points

    Hi Ryan,

    Thanks! It helps.

    Michael