Texas Instruments bq27421-G1系统侧Impedance Track™ 电量监测计
Texas Instruments bq27421-G1系统侧Impedance Track™电量监测计是易于配置的微控制器外设，为单节锂离子电池提供系统侧电量监测。器件仅需最少程度的用户配置和系统微控制器固件开发。bq27421-G1采用获得专利的Impedance Track™算法进行电量监测，并提供剩余电池容量（mAh）、当前充电状态（%）和电池电压（mV）等信息。bq27421-G1的电池电量计量仅需连接PACK+ (P+)和PACK- (P-)即可计量可拆卸电池组或嵌入式电池电路。极小的9引脚1.62mm×1.58 mm×0.5mm脚距CSP封装是空间受限应用的理想选择。
特性
- Single series cell Li-ion battery fuel gauges
- Resides on system board
- Supports embedded or removable batteries
- Powered directly from battery with integrated LDO
- Low-value integrated sense resistor (7mΩ typical)
- Easy-to-configure fuel gauging based on patented Impedance Track technology
- Reports remaining capacity and state of charge (SOC) with smoothing filter
- Automatically adjusts for battery aging, self-discharge, temperature, and rate changes
- Battery state of health (aging) estimation
- Microcontroller peripheral supports
- 400kHz I2C™ serial interface
- Configurable SOC interrupt, or battery-low digital output warning
- Internal temperature sensor, or host-reported temperature
- 9-pin 1.62mm × 1.58mm × 0.5mm pitch CSP package
应用
- Smartphones and tablets
- Digital still and video cameras
- Handheld terminals
- MP3 or multimedia players
视频
Development Tool
发布日期: 2014-04-10
| 更新日期: 2022-03-11