I am currently developing a humidity sensor-based wireless sensor node powered by a primary battery, either lithium thionyl chloride (LiSOCl₂) or lithium manganese dioxide (LiMnO₂). The objective is to operate the sensor for 5 to 10 years without battery replacement. To monitor the remaining battery life, I plan to integrate a fuel gauge IC. The sensor will be active for 20 µs, during which it will take humidity measurements, and will remain in sleep mode for the rest of the cycle. The measurement interval can be 5 minutes, 10 minutes, or 15 minutes.
Currently, the active current of the sensor module is 20 mA, and the sleep current is 60 µA.
My requirements are:
- Very low active and sleep current.
- Should be able to go in sleep mode during the sleep time of the sensor without affecting the accuracy.
It the selected IC (MAX17262) suitable for my application? Also suggest me the Fuel Gauge IC which meets my requirements.
Thankyou