BQ27541-G1 具有集成 LDO 的电池组端 Impedance Track 电池电量监测 | 德州仪器

BQ27541-G1 (不推荐在新型设计中采用)

具有集成 LDO 的电池组端 Impedance Track 电池电量监测

具有集成 LDO 的电池组端 Impedance Track 电池电量监测 - BQ27541-G1

不建议在新的设计中使用 (NRND)

替换日期 BQ27542-G1 – 器件与被比较器件具有相似功能,但并不功能等效。

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 bq27541-G1 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 for accurate battery fuel gauging. The bq27541-G1 resides within the battery pack or on the system’s main-board with an embedded battery (nonremovable).

The bq27541-G1 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). It also provides detections for internal short or tab disconnection events.

The bq27541-G1 also features integrated support for secure battery pack authentication, using the SHA-1/HMAC authentication algorithm.


  • Battery Fuel Gauge for 1-Series (1sXp) Li-Ion Applications up to 32Ahr capacity
  • Microcontroller Peripheral Provides:
    • Accurate Battery Fuel Gauging supports up to 32Ahr
    • Internal or External Temperature Sensor for Battery Temperature Reporting
    • SHA-1/HMAC Authentication
    • Lifetime Data Logging
    • 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 (5mΩ to 20mΩ)
  • Advanced Fuel Gauging Features
    • Internal Short Detection
    • Tab Disconnection Detection
  • HDQ and I2C Interface Formats for Communication With Host System
  • Small 12-pin 2.5 mm × 4 mm SON Package