Lithium polymer batteries (Lipo) are great when it comes to powering our modern mobile lifestyle. But how do we know what is the state-of-charge (SoC) of your battery? Bazinga’s LiPo Fuel Gauge connects your battery to your project and uses MAXIM’s MAX17048G tiny, micro-power current fuel gauge for lithium-ion (Li+) batteries in handheld and portable equipment.
The MAX17048 IC is currently one of the industry's smallest Size, Lowest Power Fuel Gauges that eliminate a Current-Sense Resistor by featuring a sophisticated Li+ battery-modelling algorithm ModelGauge to track the battery’s relative (SoC) continuously over widely varying charge and discharge conditions. The ModelGauge algorithm eliminates current-sense resistor and battery-learn cycles required in traditional fuel gauges.
Temperature compensation is implemented using the system microcontroller, and the ICs automatically detect when the battery enters a low-current state and enters low-power hibernate mode, while still providing accurate fuel gauging. The ICs automatically exit hibernate mode when the system returns to active state.
On battery insertion, the ICs de-bounce initial voltage measurements to improve the initial SOC estimate, thus allowing them to be located on system side. SOC, voltage, and rate information is accessed using the I2C interface. The ICs are available in a tiny 0.9mm x 1.7mm, 8-bump wafer-level package (WLP), or a 2mm x 2mm, 8-pin TDFN package.
The ICs automatically detect when the battery enters a low-current state and switches into a low-power 4µA hibernate mode, while still providing accurate fuel gauging. The ICs automatically exit hibernate mode when the system returns to active state.
We've made it easy for you to test and integrate this solution in your project with this breakout!
More details on the IC from the Manufacturer
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