Datasheet Texas Instruments BQ2050H — 数据表

Not Recommended For New Designs bq2050H
Low-Cost Lithium Ion Power Gaugeв„ў IC
Features General Description вћ¤ Accurate measurement of available capacity in Lithium Ion batteries The bq2050H Lithium Ion Power
Gaugeв„ў IC is intended for batterypack or in-system installation to
maintain an accurate record of
available battery capacity. The IC
monitors a voltage drop across a
sense resistor connected in series
between the negative battery termina l a n d g r ou n d t o d e t e r m i n e
charge and discharge activity of
the battery. Compensations for battery temperature, self discharge,
and rate of discharge are applied to
the charge counter to provide available capacity 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¤ Provides a low-cost battery management solution for pack
integration -Complete circuit can fit in as
little as 1 2 square inch of PCB -Low operating current (120ВµA
typical) -Less than 100nA of data
retention current вћ¤ High-speed (5kb) single-wire
communication interface (HDQ
bus) for critical battery …