LTC2941IDCB#TRMPBF

LTC2941 is a battery gas gauge with I²C interface. It 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. It 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. It is widely used in application such as low power handheld products, cellular phones, MP3 player, cameras, GPS etc.

• Indicates accumulated battery charge and discharge
• High accuracy analogue integration
• High side sense, 1% charge accuracy
• Configurable alert output/charge complete input
• Operating voltage range is 2.7V to 5.5V
• Quiescent current is 70µA typical at (TA = 25°C)
• Total charge error is ±1% maximum at (10mV ≤ VSENSE ≤ 50mV DC, TA = 25°C)
• Sense voltage differential input range is ±50mV max at (VSENSE+ – VSENSE–, TA = 25°C)
• Operating temperature is -40°C to 85°C
• Package style is 6-lead plastic DFN

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