Datasheet Texas Instruments BQ2011SN-D118

bq2011
Gas Gauge IC for
High Discharge Rates
Features General Description вћ¤ Conservative and repeatable
measurement of available charge
in rechargeable batteries The bq2011 Gas Gauge IC is intended
for battery-pack installation to maintain an accurate record of available
battery 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. The bq2011 is
designed for systems such as power
tools with very high discharge rates. вћ¤ Designed for portable equipment
such as power tools with high discharge rates
вћ¤ Designed for battery pack integration -120ВµA typical standby current
(self-discharge estimation mode) -Small size enables implementations in as little as 1 2
square inch of PCB вћ¤ Direct drive of LEDs for capacity
display
вћ¤ Self-discharge compensation using internal temperature sensor
вћ¤ Simple single-wire serial communications port for subassembly
testing
вћ¤ 16-pin narrow SOIC Pin Connections
1 16 VCC SEG1 2 15 REF SEG2 3 14 NC 4 The bq2011 supports a simple singleline bidirectional serial link to an external processor (common ground). The …