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Not Recommended For New Designs Preliminary bq2052 Gas Gauge IC
for Lithium Primary Cells
Features General Description вћ¤ Accurate measurement of available capacity in Lithium primary
batteries such as Lithium Sulphur Dioxide and Lithium Manganese Dioxide The bq2052 Lithium Primary Gas
G a u g e I C is in t en d ed f or b a ttery-pack 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
with the cells to determine discharge activity of the battery. The
bq2052 applies compensations for
battery temperature and discharge
rate to the available charge counter
to provide available capacity information across a wide range of operating conditions. вћ¤ Provides a low-cost battery monitor solution for pack integration -Complete circuit can fit less
than 1 square inch of PCB
space -Low operating current
Less than 100nA of data
retention current вћ¤ Single-wire communication interface (HDQ bus) for critical battery
parameters
вћ¤ Communicates remaining capacity with direct drive of LEDs in 3
selectable modes
вћ¤ Measurements automatically
compensated for discharge rate …
