LTC2941I(RevA) Datasheet PDF - Linear Technology

DESCRIPTION
The LTC®2941 measures battery charge state in batterysupplied 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.

FEATUREs
■ Indicates Accumulated Battery Charge and Discharge
■ High Accuracy Analog Integration
■ High Side Sense
■ 1% Charge Accuracy
■ ±50mV Sense Voltage Range
■ SMBus/I2C Interface
■ Configurable Alert Output/Charge Complete Input
■ 2.7V to 5.5V Operating Range
■ Quiescent Current Less Than 100µA
■ Small 6-Pin 2mm × 3mm DFN Package

APPLICATIONS
■ Low Power Handheld Products
■ Cellular Phones
■ MP3 Player
■ Cameras
■ GPS