Produktdetails

Cell chemistry NiCd, NiMH Number of series cells 2-4 Cells Communication interface DQ Battery capacity (min) (mAh) 500 Battery capacity (max) (mAh) 6000 Implementation Pack External capacity indication LED Features Coulomb Counter Operating temperature range (°C) 0 to 70 Rating Catalog
Cell chemistry NiCd, NiMH Number of series cells 2-4 Cells Communication interface DQ Battery capacity (min) (mAh) 500 Battery capacity (max) (mAh) 6000 Implementation Pack External capacity indication LED Features Coulomb Counter Operating temperature range (°C) 0 to 70 Rating Catalog
SOIC (D) 16 59.4 mm² 9.9 x 6
  • Conservative and repeatable measurement of available charge in rechargeable batteries
  • Designed for battery pack integration
    • 120µA typical standby current
    • Small size enables implementations in as little as ½ 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

  • Conservative and repeatable measurement of available charge in rechargeable batteries
  • Designed for battery pack integration
    • 120µA typical standby current
    • Small size enables implementations in as little as ½ 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

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 greater number of cells.

Internal registers include available charge, temperature, capacity, battery ID, battery status, and programming pin settings. To support subassembly testing, the outputs may also be controlled. The external processor may also overwrite some of the bq2010 gas gauge data registers.

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 greater number of cells.

Internal registers include available charge, temperature, capacity, battery ID, battery status, and programming pin settings. To support subassembly testing, the outputs may also be controlled. The external processor may also overwrite some of the bq2010 gas gauge data registers.

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Technische Dokumentation

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Typ Titel Datum
* Data sheet Gas Gauge IC datasheet (Rev. A) 11 Feb 2003
User guide EV2010 Evaluation System Product Brief 05 Sep 1999
Application note U-514 Using the bq2010 - A Tutorial for Gas Gauging 05 Sep 1999
User guide EV2010 Gas Gauge Evaluation Board User's Guide (Rev. A) 01 Mär 1998

Design und Entwicklung

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Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
SOIC (D) 16 Ultra Librarian

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