The LTC2941 measures battery charge state in battery-supplied handheld PC and portable product applications. Its operating range is perfectly suited for single-cell Li-Ion batteries. A precision coulomb counter integrates current through a sense resistor between the battery’s positive terminal and the load or charger. The measured charge is stored in internal registers. An SMBus/I2C interface accesses and configures the device. The LTC2941 features programmable high and low thresholds for accumulated charge. If a threshold is exceeded, the device communicates an alert using either the SMBus alert protocol or by setting a flag in the internal status register. The LTC2941 requires only a single low value external sense resistor to set the current range. Integrated Sense Resistor LTC2941 No LTC2941-1 Yes Applications * Low Power Handheld Products * Cellular Phones * MP3 Player * Cameras * GPS * Indicates Accumulated Battery Charge and Discharge * High Accuracy Analog Integration * High Side Sense * 1% Charge Accuracy * ±50mV Sense Voltage Range * SMBus/I2C Interface https://elecena.pl/product/1025418/battery-gas-gauge-with-ic-interface 2010-02-24 https://elecena.pl/product/1025418/battery-gas-gauge-with-ic-interface 2017-10-09 https://elecena.pl/product/1025418/battery-gas-gauge-with-ic-interface 2025-01-17