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BQ76952: Difference between Sleep Mode & Normal Mode in BQ76952

Akshit Kumar
Prodigy 20 points
Part Number: BQ76952

Hello Sir,

I wanted to know, what is the main difference in the functionality of the AFE when it is in SLEEP mode to when it is in NORMAL mode.

 Or 

What task does AFE not perform in SLEEP mode that it performs in NORMAL (WAKE) mode?

  • 0
    TI__Mastermind 25880 points

    Hi Akshit,

    SLEEP mode is a low power state of the device where ADC measurements are taken at a reduced power and rate. The DSG FET can be driven by either the charge pump or in source-follower mode and the CHG FET can be either disabled or driven by the charge pump.

    I recommend reading Section 7.3 of the TRM for more details about SLEEP mode.

    Regards,

    Max Verboncoeur

  • 0 in reply to Max Verboncoeur
    Prodigy 20 points

    Dear Maxwell,

    I actually wanted to add a small LED in my development board so as to know when my AFE is in sleep mode and when it is in Normal mode. So can you suggest to me some power pin or some configuration that I can follow to achieve something similar to this so I can physically notice my device entering sleep mode and exiting the same?

  • 0 in reply to Akshit Kumar
    TI__Mastermind 25880 points

    Hi Akshit,

    The best way to have an LED to indicate whether the device is in SLEEP mode is to have the host processor monitor the 0x12 Battery Status() [SLEEP] bit, and control the LED based on the bit's state.

    Regards,

    Max Verboncoeur