Maxim Launches Fuel Gauge IC to Extend Li-ion Battery Life
Published2020.11.24 11:22Accuracy up 40% and standby current down 85% compared to competing products
Damaged batteries are more likely to leak internal cells, and if the leak persists, it can lead to a risk of fire or explosion. While factory inspection is crucial to preventing leaky cells from being shipped, detecting self-discharge within the battery itself is also crucial.
Maxim Integrated Korea announced on the 23rd the launch of the 'MAX17320', a high-precision lithium-ion fuel gauge IC that monitors self-discharge risk and extends operating time in multi-cell battery-powered products.
Maxim Launches Lithium-Ion Fuel Gauge IC [Image = Maxim]
The MAX17320 protects against abnormal voltage, current, and temperature conditions to ensure safe charging and discharging of 2-4 series lithium-ion batteries.
It detects self-discharge, alerts the system before a dangerous situation arises, and shuts off and disables the leaking battery. It also features battery protection features that independently fine-tune voltage and current thresholds across various temperature ranges.
It also provides a secondary protection system that supports secondary protection circuits in the event of a serious failure or permanently disables the battery by cutting it off with a fuse. Blocks counterfeit batteries with SHA-256 authentication and provides a unique key or dynamic key for every battery.
It also ensures long battery life, a key consideration for device manufacturers. Devices require accurate state-of-charge (SOC) information to determine remaining operating time. The MAX17320 features Maxim's proprietary ModelGauge m5 EZ algorithm.
Maxim explained, “The ModelGauge m5 EZ algorithm provides 40% more accurate SOC than competitive products, eliminating the need for battery characterization for most lithium-ion cells.”
The MAX17320 operates in ultra-low power mode and reads SOC information immediately after the system is powered on, eliminating the need to disconnect the system from the battery during shipping or storage. It also extends product life with 85% lower quiescent current (I Q ) than competing products.
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