DS2755 - Dallas Semiconductor

DS2755 High-Accuracy Battery Fuel Gauge

The DS2755 high-precision battery fuel gauge is a data-acquisition and information-storage device tailored for cost-sensitive and space-constrained 1cell Li+/polymer battery-pack applications. The DS2755 provides the key hardware components required to accurately estimate remaining capacity by integrating low-power, precision measurements of temperature, vol.

Features

ƒ ƒ Snapshot Mode Allows Instantaneous Power Measurement Accurate Current Measurement for Coulomb Counting (Current Accumulation) - 2% ±4μV over ±64mV Input Range - 2% ±200μA over ±3.2A Range Using a 20mΩ Sense Resistor Current Measurement - 9-Bit Bidirectional Snapshot Measurement - 12-Bit Bidirectional Average Updated Every 88ms - 15-Bit Bidirectional Average Updated Every 2.8s Voltage Measurement - 9-Bit Snapshot Measurement - 10-Bit Measurement Updated Every 4ms Temperature Measurement - 10-Bit Measurement, 0.125°C Resolution Using Integrated Sensor Host Alerted When Accumulated Current or.