The Texas Instruments bq27501 system-side Li-Ion battery fuel gauge is a microcontroller peripheral that provides fuel gauging for single-cell Li-Ion battery packs.The device requires little system microcontroller firmware development.The bq27501 resides on the system main board, and manages an embedded battery (non-removable) or a removable battery pack.
The device uses the patented Impedance Track algoritm for fuel gauging, and provides information such as remaiing battery capacity (mAh), state-of-charge (%), run-time to empty (min.), battery voltage (mV), and temperature (°C).
The device works with identification resistors in battery packs to gauge batteries of different fundamental chemistries and/or different rated capacities.
Feature
- Battery Fuel Gauge for 1-Series Li-Ion Applications
- Resides on System Main Board
- Works With Embedded or Removable Battery Packs
- Works With Battery ID Resistor in Battery Pack
- Microcontroller Peripheral Provides:
- Accurate Battery Fuel Gauging
- Internal Temperature Sensor for System Temperature Reporting
- Battery Low Interrupt Warning
- Battery Insertion Indicator
- Battery ID Detection
- 96 Bytes of Non-Volatile Scratch-Pad FLASH
- Battery Fuel Gauge Based on Patented Impedance Track Technology
- Models the Battery Discharge Curve for Accurate Time-to-Empty Predictions
- Automatically Adjusts for Battery Aging, Battery Self-Discharge, and Temperature/Rate Inefficiencies
- Low-Value Sense Resistor (10 or Less)
- I2C Interface for Connection to System Microcontroller Port
- 12-Pin 2,5-mm x 4-mm SON Package
- applications
- Smartphones
- PDAs
- Digital Still and Video Cameras
- Handheld Terminals
- MP3 or Multimedia Players
