NRF518222 using 3V coin cell battery

[Lee]

I have a question about the NRF518222, we using 3v coin cell battery as power for Ldo working mode. The connection between the devices and mobile phones, regular, disconnection and reconnection. How to resolve this problem?

[Lee]

Dave_couling: SDK version is 7.0 Softdevice is 7.1 Antenna is ceramic bluetooth antenna. 32K is using RC internal in Chipset. Steady state is about 400uA. Peak Current is about 0.6mA.

[Dave_couling]

Steady State current of 400uA seems a bit high.

Are you sure you initialized the Softdevice to use the internal RC? example: SOFTDEVICE_HANDLER_INIT(NRF_CLOCK_LFCLKSRC_RC_250_PPM_250MS_CALIBRATION, true);

You peak current should be much higher than 0.6mA. Are you measuring with an oscilloscope?

[Lee]

Yes, I am sure i have initialized the internal RC.