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MKL03Z: High Current Consumption in Low Voltage Conditions

Question asked by Gaurav Banyal on Jun 21, 2017
Latest reply on Jul 10, 2017 by Jorge Antonio Alcala Vazquez

I have a question about low voltage operation of the MCU.

In my application, when the MCU is in VLLS0 state (consuming around 0.1uA) and the supply voltage (Vbatt) is reducing gradually, somewhere in the vicinity of 1.2v, the current consumption of the MCU shoots up in the mA range and doesn’t go to the nA range again and the battery is completely discharged.

In the reverse path, when the battery voltage is gradually increased from 0V, the current consumption is in the mA range and around 1.9v, the current consumption again goes to around 0.1uA (VLLS0).

 

We want to avoid this high current draw from the MCU when the supply voltage is under these ranges. Is there a software setting for avoiding this? I think the LVD can help only when the device was in RUN mode and not in VLLS0. Is there a way?

 

Thanks and best regards,

Gaurav Banyal

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