BQ27541-V200 Single Cell Li-Ion Battery Fuel Gauge for Battery Pack Integration | TI.com

BQ27541-V200
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Single Cell Li-Ion Battery Fuel Gauge for Battery Pack Integration

 

Description

The Texas Instruments bq27541 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 resides within the battery pack or on the system’s main-board with an embedded battery (nonremovable).

The bq27541 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).

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

Features

  • Battery Fuel Gauge for 1-Series
    Li-Ion Applications
  • Microcontroller Peripheral Provides:
    • Accurate Battery Fuel Gauging
    • Internal Temperature Sensor for
      System Temperature Reporting
    • SHA-1/HMAC Authentication
    • Lifetime Data Logging
    • 96 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)
  • HDQ and I2C Interface Formats
    for Communication With Host System
  • Small 12-pin 2.5 mm × 4 mm SON Package
  • APPLICATIONS
    • Smartphones
    • PDAs
    • Digital Still and Video Cameras
    • Handheld Terminals
    • MP3 or Multimedia Players

Parametrics

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Part number Order Number of series cells Cell chemistry Battery capacity (Max) (mAh) Communication interface Battery capacity (Min) (mAh) External capacity indication Implementation Gas gauge algorithm Features Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
BQ27541-V200 Order now Single Cell     Li-Ion/Li-Polymer     8000     HDQ
I2C    
300     None     Pack     IT (High accuracy)     SHA-1 Authentication     -40 to 85     SON | 12     12SON: 10 mm2: 2.5 x 4 (SON | 12)    
BQ27410-G1 Samples not available Single Cell     Li-Ion/Li-Polymer     8000     I2C     300     None     System     IT (High accuracy)       -40 to 85     SON | 12     12SON: 10 mm2: 2.5 x 4 (SON | 12)    
BQ27500-V130 Samples not available Single Cell     Li-Ion/Li-Polymer     8000     I2C     300     None     System     IT (High accuracy)       -40 to 85     DSBGA | 12
SON | 12    
See datasheet (DSBGA)
12SON: 10 mm2: 2.5 x 4 (SON | 12)    
BQ27505-J5 Samples not available Single Cell     Li-Ion/Li-Polymer     8000     I2C     300     None     System     IT (High accuracy)       -40 to 85     DSBGA | 12     See datasheet (DSBGA)    
BQ27510-G2 Samples not available Single Cell     Li-Ion/Li-Polymer     8000     I2C     300     None     System     IT (High accuracy)       -40 to 85     SON | 12     12SON: 10 mm2: 2.5 x 4 (SON | 12)