DC1496B-C

LINEAR TECHNOLOGY DC1496B-C Demonstration Board for LTC2941-1 Battery Gas Gauge with I2C Interface

demonstration circuit features the LTC2941-1 battery gas gauge. It measures battery charge state in battery powered 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 an internal sense resistor between the battery"s positive terminal and the load or charger. The measured charge is stored in internal registers. An I2C interface accesses and configures the device. The LTC2941-1 features programmable high and low thresholds for accumulated charge. If a threshold is exceeded, the device communicates an alert by setting a flag in the internal status register. The DC1496B is a part of the QuikEval system for quick evaluation with a host controller through a PC.

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Indicates accumulated battery charge and discharge

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High accuracy analog integration

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High side sense

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1% charge accuracy

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±50mV sense voltage range

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I2C interface

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Configurable alert output/charge complete input

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2.7V to 5.5V operating range

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Quiescent current less than 100uA

Companion with DC590B USB serial controller board, sold separately.