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TPS62740: Integrated switch leakage current

Jan Rychter
Intellectual 305 points
Part Number: TPS62740
Other Parts Discussed in Thread: TPS62743, TPS22860, TPS82740A, TPS62746

I would like to use the TPS62740 in a design, but I can't seem to find the leakage current for the integrated load switch.

I currently use the TPS62743 and a TPS22860 load switch, which has excellent low-leakage specs, but I have to move to the TPS62740 because of manufacturing difficulties with DSBGA. Using the integrated switch would save cost and board space, but this is an extremely low power device, so I have to worry about leakage current.

Is this specified anywhere? Is there a way to find out without building prototypes (even then this isn't easy to measure)?

best regards,
--Jan
Founder, PartsBox · https://partsbox.io/ · Twitter: @PartsBoxIO

  • 0
    TI__Guru**** 150900 points

    Being more integrated, the leakage would be included in the Iin_vout spec. It is very low.

    The TPS82740A/B is another device, which is even more integrated. It comes in a BGA as well. However, the pitch is much larger (0.8mm) which is helpful for many customers.

  • 0 in reply to Chris Glaser
    Intellectual 305 points

    Thank you for the clarification!

    As for the TPS82740A/B — interesting, I didn't know about this one. It could be interesting, I'll see if the larger pitch helps. The problem with 0.5mm pitch BGAs was reliable paste application.

    By the way, if TI ever designs a chip like the TPS62740 with an integrated battery voltage monitor switch (like on the TPS62746), I'll be in heaven. It's the only thing that is missing from an otherwise fantastic device.

    best regards,
    --Jan
    Founder, PartsBox · https://partsbox.io/ · Twitter: @PartsBoxIO