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BQ2010

UNITRODE
Part Number BQ2010
Manufacturer UNITRODE
Description Gas Gauge IC
Published Feb 16, 2020
Detailed Description Not Recommended For New Designs bq2010 Gas Gauge IC Features ➤ Conservative and repeatable measurement of available ...
Datasheet PDF File BQ2010 PDF File

BQ2010
BQ2010

Overview
Not Recommended For New Designs bq2010 Gas Gauge IC Features ➤ Conservative and repeatable measurement of available charge in rechargeable batteries ➤ Designed for battery pack integration - 120µA typical standby current - Small size enables imple- mentations in as little as 1 2 square inch of PCB ➤ Integrate within a system or as a stand-alone device - Display capacity via single- wire serial communication port or direct drive of LEDs ➤ Measurements compensated for current and temperature ➤ Self-discharge compensation using internal temperature sensor ➤ Accurate measurements across a wide range of current (> 500:1) ➤ 16-pin narrow SOIC General Description 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.
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.
Nominal available charge may be directly indicated using a five- or six-segment LED display.
These segments are used to indicate graphically the nominal available charge.
The bq2010 supports a simple single-line bidirectional serial link to an external processor (common ground).
The bq2010 outputs battery information in response to external commands over the serial link.
The bq2010 may operate directly from 3 or 4 cells.
With the REF output and an external transistor, a simple, inexpensive regulator can be built to provide VCC across a gr...


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