System-Side Impedance-Track Fuel Gauge With Direct Battery Connection - BQ27510-G3

BQ27510-G3 (ACTIVE)

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

 

Description

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.

Features

  • 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

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Parametrics Compare all products in Battery Fuel Gauge

 
Number of Series Cells
Cell Chemistry
Battery Capacity (Max) (mAh)
Communication Interface
Battery Capacity (Min) (mAh)
External Capacity Indication
Implementation
Gas Gauge Algorithm
Cell Balancing
Special Features
Operating Temperature Range (C)
Pin/Package
BQ27510-G3 BQ27542-G1 BQ34110 BQ34Z100-G1 BQ78350-R1
Single Cell    Single Cell    2-4 Cells
>4 Cells
Single Cell   
2-4 Cells
>4 Cells
Single Cell   
>4 Cells   
Li-Ion/Li-Polymer    Li-Ion/Li-Polymer    Lead Acid
Li-Ion/Li-Polymer
LiFePO4
NiCd
NiMH   
Lead Acid
Li-Ion/Li-Polymer
LiFePO4
NiCd
NiMH   
Li-Ion/Li-Polymer
LiFePO4   
16000    14600    29000    29000    320000   
I2C    HDQ
I2C   
I2C    HDQ
I2C   
I2C
SMBus   
300    100    100    100    100   
None    None    None    LED    LCD
LED
SOC   
System    Pack    Pack
System   
Pack
System   
Pack   
IT (High accuracy)    IT (High accuracy)    CEDV    IT (High accuracy)    CEDV   
N/A    N/A    N/A    N/A    External
Internal   
N/A    SHA-1 Authentication
Turbo Mode   
Accumulated Coulomb Count
End of Service
SHA-1 Authentication   
SHA-1 Authentication    Cell Balancing
Integrated Protector
SHA-1 Authentication   
-40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85   
12SON    12SON    14TSSOP    14TSSOP    30TSSOP