Fuel gauge needs no battery characterization
As the battery approaches the critical region near empty, the ModelGauge m5 algorithm invokes a special error correction mechanism that eliminates any error. In addition, it provides three methods for reporting the age of the battery: reduction in capacity, increase in battery resistance, and cycle odometer.
The MAX17055 measures current, voltage, and temperature, while a two-wire I2C interface permits access to data and control registers. Quiescent current is just 7 µA, which prevents excessive energy loss.
Offered in 1.41×1.5 mm, 9-pin WLP and 2×2.5 mm, 10-pin TDFN packages, the MAX17055 fuel gauge can be used for wearable devices, smart watches, smart phones, health and fitness monitors, body cameras, portable medical devices, and USB Type C portable devices.
The MAX17055 costs $1.08 each in lots of 10,000 units. An evaluation kit is available for $66. Both are shipped from stock.
MAX17055 product page
Maxim Integrated Products, www.maximintegrated.com
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