• Single-Series Cell Li-Ion Battery Fuel Gauge Resides on System Board
  • Integrated 2.5-VDC LDO
  • External Low-Value 10-mΩ Sense Resistor
• Patented Impedance Track™ Technology
  • Adjusts for Battery Aging, Self-Discharge, Temperature, and Rate Changes
  • Reports Remaining Capacity, State-of-Charge (SOC), and Time-to-Empty
    • Optional Smoothing Filter
  • Battery State-of-Health (Aging) Estimation
  • Supports Embedded or Removable Packs With up to 32-Ahr Capacity
    • Accommodates Pack Swapping With 2 Separate Battery Profiles
• Microcontroller Peripheral Supports:
  • 400-kHz I2C Serial Interface
  • 32 Bytes of Scratch-Pad FLASH NVM
  • Battery Low Digital Output Warning
  • Configurable SOC Interrupts
  • External Thermistor, Internal Sensor, or Host-Reported Temperature Options
• Small 12-Pin 2.50 mm × 4.00 mm SON Package

• Smartphones, Feature Phones, and Tablets
• Wearables
• Building Automation
• Portable Medical/Industrial Handsets
• Portable Audio
• Gaming

The Texas Instruments bq27510-G3 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-G3 resides on the system’s main board and manages an embedded battery (non-removable) or a removable battery pack.

The bq27510-G3 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), temperature (°C) and state-of-health (%).

Battery fuel gauging with the bq27510-G3 requires only PACK+ (P+), PACK– (P–), and optional Thermistor (T) connections to a removable battery pack or embedded battery circuit.