Texas Instruments bq27421-G1 System-Side Impedance Track Fuel Gauges
Texas Instruments bq27421-G1 System-Side Impedance Track™ Fuel Gauges are an easy-to-configure microcontroller peripheral that provides system-side fuel gauging for single-cell Li-Ion batteries. These devices require minimal user configuration and system microcontroller firmware development. The bq27421-G1 uses the patented Impedance Track algorithm for fuel gauging and provides information such as remaining battery capacity (mAh), state-of-charge (%), and battery voltage (mV). Battery fuel gauging with the TI bq27421-G1 requires connections only to PACK+ (P+) and PACK- (P-) for a removable battery pack or embedded battery circuit. The tiny 9-pin 1.62mm x 1.58mm x 0.5mm pitch CSP package is ideal for space-constrained applications.
Features
- 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
Applications
- Smartphones and tablets
- Digital still and video cameras
- Handheld terminals
- MP3 or multimedia players
Videos
Development Tool
게시일: 2014-04-10
| 갱신일: 2022-03-11