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BQ27541-G1 hibernate mode

Hi,


We are planning to use BQ27541-G1 chip in out design and we have doubt regarding the different power modes this chip can support.


We want to use SE pin in the chip to cut off power from battery to the system, when the battery is drained below critical level. 

To achieve this, we understood that SHUTDOWN  feature needs to be enabled though either SE_EN in pack configuration or SET_SHUTDOWN subcommand needs to sent and INTSEL also needs to be set.

Once the battery voltage drops below the critical voltage(<hibernate voltage), fuel gauge enters hibernate mode and SE pin is active.

But we want to know how the chip can exit from hibernate mode? since system voltage is cut off, the host processor cannot make communication activity through I2C lines to awake the chip.

Is there any way BQ27541 can itself exit from hibernate mode once the battery is charged sufficiently?

Also we want to know the programmed Hibernate Voltage threshold in the chip.

Regards,

Suhas M


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