BQ27510 System Side Impedance Track™ Fuel Gauge with Integrated LDO | TI.com

BQ27510
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System Side Impedance Track™ Fuel Gauge with Integrated LDO

 

Description

The Texas Instruments bq27510 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 bq27510 resides on the system's main board and manages an embedded battery (non-removable) or a removable battery pack.

The bq27510 uses the patented Impedance Track™ algorithm for fuel gauging, and provides information such as remaining battery capacity (mAh), state-of-charge (%), run-time to empty (min.), battery voltage (mV), and temperature (°C).

Battery fuel gauging with the bq27510 requires only PACK+ (P+), PACK- (P-), and Thermistor (T) connections to a removable battery pack or embedded battery.

Features

  • Battery Fuel Gauge for 1-Series Li-Ion Applications
  • Resides on System Main Board
    • Works with Embedded or Removable Battery Packs
    • Uses PACK+, PACK-, and T Battery Terminals
    • Can be Powered Directly From Battery Pack (no LDO required)
  • Microcontroller Peripheral Provides:
    • Accurate Battery Fuel Gauging
    • Battery Low Interrupt Warning
    • Battery Insertion Indicator
    • 96 Bytes of Non-Volatile Scratch Pad FLASH
  • Battery Fuel Gauging Based on Patented Impedance Track Technology
    • Models 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 m or less)
  • I2C for Connection to System Microcontroller Port
  • Small 12-pin 2,5 mm × 4 mm SON Package
  • APPLICATIONS
    • Smartphones
    • PDAs
    • Digital Still and Video Cameras
    • Handheld Terminals
    • MP3 or Multimedia Players
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Parametrics

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Part number Order Number of series cells Cell chemistry Communication interface Implementation Gas gauge algorithm Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
BQ27510 Order now Single Cell     Li-Ion/Li-Polymer     I2C     System     IT (High accuracy)     -40 to 85     SON | 12     12SON: 10 mm2: 2.5 x 4 (SON | 12)