Gas Gauge IC For High Discharge Rates

The BQ2011K Gas Gauge IC is in- tended for battery-pack installation to maintain an accurate record of a bat- terys available charge. The IC moni- tors a voltage drop across a sense re- sistor connected in series between the negative battery terminal and ground to determine charge and discharge ac- tivity of the battery. The BQ2011K is designed for systems such as power tools with very high discharge rates. Battery self-discharge is estimated based on an internal Timer and tem- perature Sensor Compensations for battery temperature and rate of charge or discharge are applied to the charge, discharge, and selfdischarge calculations to provide available charge information across a wide range of operating conditions. Initial battery capacity is set using the PROG1-4 and SPFC pins. Actual battery capacity is automatically learned in the course of a dis- charge cycle from full to empty and may be displayed depending on the Display mode. Nominal available charge may be di- rectly indicated using a five-seg- ment LED Display These segments are used to graphically indicate nominal available charge. The BQ2011K supports a simple single-line bidirectional serial link to an external processor (common ground). The BQ2011K outputs bat- tery information in response to exter- nal commands over the serial link. To support subassembly testing, the outputs may also be controlled by command. The external processor may also overwrite some of the BQ2011K gas gauge data Registers The BQ2011K may operate directly from four cells. With the REF out- put and an external Transistor a simple, inexpensive Regulator CAN be built to provide VCC from a greater number of cells By Texas Instruments
BQ2011K 's PackagesBQ2011K 's pdf datasheet

BQ2011K Pinout, Pinouts
BQ2011K pinout,Pin out
This is one package pinout of BQ2011K,If you need more pinouts please download BQ2011K's pdf datasheet.

BQ2011K Application circuits
BQ2011K circuits
This is one application circuit of BQ2011K,If you need more circuits,please download BQ2011K's pdf datasheet.

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