The Texas Instruments bq27421-G1 fuel gauge is a minimally configured microcontroller peripheral that provides system-side fuel gauging for single-cell Li-Ion batteries. The device requires very little user configuration and system microcontroller firmware development.
The bq27421-G1 fuel gauge uses the patented Impedance TrackTM 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 bq27421-G1 fuel gauge requires connections only to PACK+ (P+) and PACK– (P–) for a removable battery pack or embedded battery circuit. The tiny 9-ball, 1.62 mm × 1.58 mm, 0.5-mm pitch NanoFree? chip scale package (DSBGA) is ideal for space-constrained applications.
Feature
- Single-Cell Li-Ion Battery Fuel Gauge
- Resides on System Board
- Supports Embedded or Removable Batteries
- Powered Directly from Battery with Integrated LDO
- Low-Value Integrated Sense Resistor (7 mΩ, 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:
- 400-kHz I2C Serial Interface
- Configurable SOC Interrupt or Battery Low Digital Output Warning
- Internal Temperature Sensor or Host-Reported Temperature
The Texas Instruments bq27421-G1 fuel gauge is a minimally configured microcontroller peripheral that provides system-side fuel gauging for single-cell Li-Ion batteries. The device requires very little user configuration and system microcontroller firmware development.
The bq27421-G1 fuel gauge uses the patented Impedance TrackTM 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 bq27421-G1 fuel gauge requires connections only to PACK+ (P+) and PACK– (P–) for a removable battery pack or embedded battery circuit. The tiny 9-ball, 1.62 mm × 1.58 mm, 0.5-mm pitch NanoFree? chip scale package (DSBGA) is ideal for space-constrained applications.
