Datasheet Texas Instruments BQ2010

Not Recommended For New Designs bq2010
Gas Gauge IC
Features General Description вћ¤ Conservative and repeatable
measurement of available charge
in rechargeable batteries The bq2010 Gas Gauge IC is intended
for battery-pack or in-system installation to maintain an accurate record of
a battery's available charge. The IC
monitors a voltage drop across a
sense resistor connected in series between the negative battery terminal
and ground to determine charge and
discharge activity of the battery. вћ¤ Designed for battery pack integration -120ВµA typical standby current -Small size enables implementations in as little as 1 2
square inch of PCB вћ¤ Integrate within a system or as a
stand-alone device -Display capacity via singlewire serial communication
port or direct drive of LEDs вћ¤ Measurements compensated for
current and temperature
вћ¤ Self-discharge compensation using internal temperature sensor NiMH and NiCd battery self-discharge is estimated based on an internal timer and temperature sensor.
Compensations for battery temperature and rate of charge or discharge
are applied to the charge, discharge,
and self-discharge calculations to provide available charge information
across a wide range of operating conditions. Battery capacity is automatically recalibrated, or “learned,” in the
course of a discharge cycle from full to
empty. вћ¤ 16-pin narrow SOIC Nominal available charge may be
directly indicated using a five-or …