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Original question:

BQ76952: BQ7695202 IC

BQ76952: BQ7695202 REG1 3.3V default output?

Cheng Zhang
Prodigy 120 points
Part Number: BQ76952

Tool/software:

HI team,

One quick question for BQ7695202, it says in datasheet that device 3.3V REG1 output by default enabled, does it mean that REG1 will have 3.3V output once battery attached? i.e. able to output 3.3V in shutdown mode. Or it means REG1 output 3.3V automatically after the device wake up into active mode?

Thanks

  • 0
    TI__Prodigy 570 points

    It means REG1 will output 3.3V automatically after the device wakes up into active mode.

    "SHUTDOWN mode:

    SHUTDOWN mode is the lowest power mode of the device, and it is often used for shipment or long-term storage.  In this mode, internal logic is powered down, and all data memory (RAM) register information is lost.  While in SHUTDOWN, the device is completely disabled (including the internal, REG1, and REG2 LDOs).  The CHG, PCHG, DSG, and PDSG FETs are all disabled.  All battery protections are disabled, and no measurements are taken.  There is just a very low power ~5V internal rail that is driven onto TS2 through a ~4.6-MOhm resistor for WAKE detect."

    e2e.ti.com/.../faq-bq76952-how-does-shutdown-mode-work