LTC2944CDD#PBF

芯片, 电池电量计, DFN-8

The from is a 60V battery gas gauge with temperature, voltage and current measurement in 8 pin plastic DFN package. The LTC2944 measures battery charge state, battery voltage, battery current and its own temperature in portable product applications. The wide input voltage range allows use with multicell batteries up to 60V. A precision coulomb counter integrates current through a sense resistor between the battery"s positive terminal and the load or charger. Voltage, current and temperature are measured with an internal 14bit no latency ΔΣ ADC. The measurements are stored in internal registers accessible via the onboard I2C/SMBus Interface. It features programmable high and low thresholds for all four measured quantities. If a programmed threshold is exceeded, the device communicates an alert using either the SMBus alert protocol or by setting a flag in internal status registers. Requires a single low value sense resistor to set measured current r

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Measures accumulated battery charge and discharge

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3.6V to 60V operating range for multiple cells

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14bit ADC measures voltage, current and temperature

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1% voltage, current and charge accuracy

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±50mV sense voltage range

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High side sense

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General purpose measurements for any battery chemistry and capacity

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Configurable alert output/charge complete input

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Quiescent current less than 150µA

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Operating temperature range from 0°C to 70°C