BQ27510-G3

• 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-Ah 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

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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.