LIS3MDL Power Down Mode Issue

[SKund.1]

Hi,

We are using LIS3MDL in our application and current consumption in Power-Down mode is 0.2mA which is quite high but it should be 1uA as per the datasheet.

Any suggestion on why I am unable to achieve 1uA level as mentioned in the data sheet?

Regards

Siva

[Eleon BORLINI]

Hi Siva @SKund.1​ ,

it's indeed much higher than the declared Power-down consumption.

I believe it could be an issue related to the hardware configuration of the pins: could you please share the schematic of your application board?

For example, which is the configuration of the SDO/SA1 pin? Should be indeed an input without pull-up by default, but can you please check whether you have connected it to Vdd or GND?

-Eleon

[SKund.1]

Hi Eleon,

We are using adafruit module for testing purpose only and their schematic is shown below

SDO is connected to GND in our case.

Once we are happy with the current consumption then we are planning to add into our final project.

Regards

Siva

[Eleon BORLINI]

Hi Siva @SKund.1​ ,

it looks ok.

Did you measure the current consumption from the device Vdd only (without any other devices connected?)

And could you please unsolder the R2 resistor and connect the SJ1 solder bridge and check again the power down consumption (no SPI running, and register not configured, right?)?

-Eleon