BQ27510-G2 (NRND)

System-Side Impedance-Track Fuel Gauge With Direct Battery Connection

System-Side Impedance-Track Fuel Gauge With Direct Battery Connection - BQ27510-G2

Not Recommended for New Designs (NRND)

Replaced By BQ27510-G3– The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.

TI does not recommend using this part in a new design. This product continues to be in production to support existing customers.


The Texas Instruments bq27510-G2 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-G2 resides on the system’s main board and manages an embedded battery (non-removable) or a removable battery pack.

The bq27510-G2 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-G2 requires only PACK+ (P+), PACK– (P–), and Thermistor (T) connections to a removable battery pack or embedded battery.


  • 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
    • 64 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
    • Smartphones
    • PDAs
    • Digital Still and Video Cameras
    • Handheld Terminals
    • MP3 or Multimedia Players

Impedance Track is a trademark of Texas Instruments.
I2C is a trademark of Phillips Corporation.

View more