BQ27520-G1 具有集成 LDO 的系统端 Impedance Track™ 电量监测 | 德州仪器

BQ27520-G1 (不推荐在新型设计中采用)

具有集成 LDO 的系统端 Impedance Track™ 电量监测

具有集成 LDO 的系统端 Impedance Track™ 电量监测 - BQ27520-G1

不建议在新的设计中使用 (NRND)

替换日期 BQ27520-G4 – 器件与被比较器件在功能和参数上完全等效。

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 bq27520-G1SN1002036 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 bq27520-G1SN1002036 resides on the system’s main board and manages an embedded battery (non-removable) or a removable battery pack.

The bq27520-G1SN1002036 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 bq27520-G1SN1002036 requires only PACK+ (P+), PACK– (P–), and Thermistor (T) connections to a removable battery pack or embedded battery circuit. The CSP option is a 15-ball package in the dimensions of 2,61 mm × 1,96 mm with 0,5 mm lead pitch. It is ideal for space constrained applications.


  • 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
  • Microcontroller Peripheral Provides:
    • Accurate Battery Fuel Gauging
    • Internal Temperature Sensor for Battery Temperature Reporting
    • Battery Low Interrupt Warning
    • Battery Insertion Indicator
    • Configurable Level of State of Charge (SOC) Interrupts
    • State of Health Indicator
    • Current Data Logging Buffer
    • 64 Bytes of Non-Volatile Scratch-Pad FLASH
  • Battery Fuel Gauge Based on Patented Impedance Track Technology
    • Models the 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 (5 mΩ to 20 mΩ)
  • 400-kHz I2C Interface for Connection to System
    Microcontroller Port
  • In a 15-Pin NanoFree (CSP) Packaging
    • Smartphones
    • PDAs
    • Digital Still and Video Cameras
    • Handheld Terminals
    • MP3 or Multimedia Players