L26-DR ADR - what is the RTC domain power consumption?

IoT Modules GNSS Module
1

Hi, I am doing some tests with the backup battery of the L26 DR ADR module, according to L26-DR_Hardware_Design pdf v1.1 page 17:

VCC can be used as the power supply for RTC domain when its power supply voltage is within the normal range, otherwise, V_BCKP will be used.

but the RTC domain current consumption value is not detailed anywhere, only in the standby mode chapter is mentioned that the MEMS + RTC keeps working during this mode and the battery backup circuit is shown

standby
standby806×828 85 KB

so, what is the RTC domain power consumption and why is the backup circuit shown in the standby mode?, should I enter in standby mode before enter in the battery backup mode to keep only the RTC domain power on?, in my test I left the module powered by the battery for three days and the battery voltage decresases from 2.7V to 0.83V, so I don´t know if this is an expected consumption

2

Dear Sir

Please refer to the latest hardware documentation in the attachment, and chapter 1.3 has detailed current parameters.

Best Regards
Quectel_L26-DR_Hardware_Design_V1.3.pdf (656.2 KB)

1 Like
3

@Stone.Chen-Q Hi, I understand that 75uA is the power consumed in 1 hour right?

4

Dear Sir

This value is the average current over a certain period of time.

Best Regards