Analog Devices has announced the MAX17330 battery management IC with integrated fuel gauge and advanced battery protection for one-cell lithium-ion/polymer batteries that delivers longer battery runtime for consumer applications than similar products. Compared with similar products, the MAX17330 significantly extends run-time and monitors internal cell self-discharge hazards, while also shrinking the size of single cell battery-powered products. Proprietary AccuCharge™ and ModelGauge™ technologies deliver high top-off charge and deep safe discharge, enabling longer run-time of medical and fitness wearables, home and building automation sensors, handheld computers and terminals. The MAX17330 also simplifies battery management for devices using parallel cells, such as foldable smartphones and tablets, as well as AR/VR smartglasses.
Conventional battery charger ICs implement techniques that result in inconsistent charging and consequently, requiring an additional margin for the battery protector. This limits the battery from being charged to its maximum level. Many modern devices require multiple cells that are separated physically to manage the weight distribution for good ergonomics or user experience. This poses unique challenges while charging, as the batteries can have unequal impedances and can also be of different capacities and initial states. The MAX17330 addresses these challenges by controlling the charger using its integrated fuel gauge for each individual cell.