BQ2010 Overview
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. pensations 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...
BQ2010 Key Features
- Conservative and repeatable measurement of available charge in rechargeable batteries
- Designed for battery pack integration
- 120µA typical standby current
- Small size enables imple
- Integrate within a system or as a stand-alone device
- Display capacity via single
- Measurements pensated for current and temperature
- Self-discharge pensation using internal temperature sensor
- Accurate measurements across a wide range of current (> 500:1)
- 16-pin narrow SOIC