Datasheet Linear Technology LTC2943CDD#PBF — 数据表

LTC2943
Multicell Battery Gas Gauge
with Temperature, Voltage
and Current Measurement
FEATURES DESCRIPTION Measures Accumulated Battery Charge and Discharge
n 3.6V to 20V Operating Range for Multiple Cells
Applicatio 14-Bit ADC Measures Voltage, Current and
Temperature
n 1% Voltage, Current and Charge Accuracy
n В±50mV Sense Voltage Range
n High Side Sense
n General Purpose Measurements for Any Battery
Chemistry and Capacity
n I2C/SMBus Interface
n Configurable Alert Output/Charge Complete Input
n Quiescent Current Less Than 120ВµA
n Small 8-Lead 3mm Г— 3mm DFN Package The LTCВ®2943 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 20V. 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 14-bit No Latency О”ОЈв„ў ADC. The measurements …