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Original question:

TCAN1044A-Q1: TCAN1044A-Q1

TCAN1044A-Q1: I am looking for a device with lower standby current consumption than the TCAN1044AV.

TAKESHI KASAHARA
Prodigy 25 points
Part Number: TCAN1044A-Q1

Tool/software:

I am currently using the TCAN1044AV, but its standby current consumption is quite high, which is causing issues.

I have noticed that TCAN1472V has been recently released, and it appears to have significantly lower standby current consumption compared to TCAN1044AV. The pin configuration also seems to be the same.

Would it be possible to use TCAN1472V as a direct replacement for TCAN1044AV?

Additionally, does anyone have knowledge of alternative products with similar functionality that can keep standby current consumption below a few microamperes?

Your insights would be greatly appreciated. Thank you.

  • 0
    TI__Guru 50736 points

    Hi Takeshi,

    Yes, it is possible to use as a direct replacement. Furthermore, I did not find any other devices with a lower standby current, thanks.

    Best Regards,

    Michael.

  • 0 in reply to Michael Ikwuyum
    Prodigy 25 points

    Thank you for confirming the compatibility.
    I will proceed with testing by replacing it with the new product.

    Best regards

  • 0
    Prodigy 25 points

    I have an additional question regarding this matter.

    The Vcc and Vio power rails are present, and the Low Power Receiver is said to operate on Vio power during Standby mode.

    Looking at the datasheet, the current consumption for Vcc in Standby mode is approximately 1.5µA, which is very low. However, Vio consumes around 8.5µA, which is relatively higher.

    Is this understanding correct?

    If so, is there any benefit in setting Vcc (+5V) to 0V during Standby mode?

    As long as +3.3V is supplied to Vio, should I assume that the device will consume at least 8.5µA of power?

    I appreciate your insights. Thank you.

  • 0 in reply to TAKESHI KASAHARA
    TI__Guru 50736 points

    Hi Takeshi,

    Yes, your understanding is correct similar to the below, thanks.

    Best Regards,

    Michael.

  • 0 in reply to Michael Ikwuyum
    Prodigy 25 points

    Thank you Michael,

    I have reviewed the contents of the specification sheet. I did not fully understand the parts marked with a marker. It states that in low power mode, it operates solely on Vio, allowing the Vcc connected "other devices" to reduce power consumption by setting it to 0V. This means it does not claim that the power consumption of TCAN1044AV itself is reduced, correct?

    Regards,

    Takeshi

  • 0 in reply to TAKESHI KASAHARA
    TI__Guru 50736 points

    Hi Takeshi,

    It is applicable to both, I.e., when Vcc is off, the device level current is reduced. Hence, overall system level current is also reduced, thanks.

    Best Regards,

    Michael.