I want to design a low power circuit with stm32l micro and LoRa Module as its radio to send a sensor data to a gateway. The circuit is powered with a non rechargeable battery.
My problem is about its power circuit. I know that in order to decrease power consumption I have to decrease the quiescent current.
I want to turn on the circuit by turning on an LDO STLQ020 once a minute, and MCU in sleep mode is powered with a backup battery.