BQ27542-G1 Single Cell Impedance Track Pack Side Fuel Gauge | TI.com

BQ27542-G1 (ACTIVE)

Single Cell Impedance Track Pack Side Fuel Gauge

Single Cell Impedance Track Pack Side Fuel Gauge - BQ27542-G1
 

Description

The Texas Instruments bq27542-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 fuel gauge resides within the battery pack or on the main board of the system with an embedded battery (non-removable).

The fuel gauge 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 (minimum), battery voltage (mV), and temperature (°C). It also provides detections for internal short or tab disconnection events.

The fuel gauge also features integrated support for secure battery pack authentication, using theSHA-1/HMAC authentication algorithm.

Features

  • Battery Fuel Gauge for 1-Series (1sXp) Li-Ion
    Applications up to 14,500-mAh Capacity
  • Microcontroller Peripheral Provides:
    • Accurate Battery Fuel Gauging Supports up to
      14,500 mAh
    • 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 (5 mΩ to 20 mΩ)
  • Advanced Fuel Gauging Features
    • Internal Short Detection
    • Tab Disconnection Detection
  • HDQ and I2C Interface Formats for
    Communication with Host System
  • Small 12-pin 2.50 mm × 4.00 mm SON Package
  • Complies with Battery Trip Point (BTP)
    Requirements

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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
Features
Operating Temperature Range (C)
Pin/Package
BQ27542-G1 BQ27220 BQ27320 BQ27426 BQ27510-G3 BQ27520-G4 BQ27546-G1 BQ27621-G1 BQ27742-G1 BQ27750 BQ27Z561 BQ28Z610 BQ34110 BQ34Z100-G1 BQ35100 BQ4050 BQ40Z50-R1 BQ78350-R1 BQ78Z100
Single Cell     Single Cell     Single Cell     Single Cell     Single Cell     Single Cell     Single Cell     Single Cell     Single Cell     Single Cell     Single Cell     1-2 Cells     2-4 Cells
>4 Cells
Single Cell    
2-4 Cells
>4 Cells
Single Cell    
2-4 Cells
>4 Cells
Single Cell    
2-4 Cells
Single Cell    
2-4 Cells
Single Cell    
>4 Cells     1-2 Cells    
Li-Ion/Li-Polymer     Li-Ion/Li-Polymer     Li-Ion/Li-Polymer     Li-Ion/Li-Polymer     Li-Ion/Li-Polymer     Li-Ion/Li-Polymer     Li-Ion/Li-Polymer     Li-Ion/Li-Polymer     Li-Ion/Li-Polymer     Li-Ion/Li-Polymer
LiFePO4    
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    
Primary Lithium     Li-Ion/Li-Polymer
LiFePO4    
Li-Ion/Li-Polymer
LiFePO4    
Li-Ion/Li-Polymer
LiFePO4    
Li-Ion/Li-Polymer    
32000     29000     29000     14000     16000     32000     32000     32000     16000     14000     30000     14000     29000     29000     32000     29000     29000     320000     14000    
HDQ
I2C    
I2C     I2C     I2C     I2C     I2C     HDQ
I2C    
I2C     HDQ
I2C    
I2C     HDQ
I2C    
I2C     I2C     HDQ
I2C    
I2C     SMBus     SMBus     I2C
SMBus    
HDQ    
100     100     100     100     300     100     100     100     200     100     100     100     100     100     100     500     100     100     100    
None     None     None     None     None     None     None     None     None     None     None     None     None     LED     None     LED     LED     LCD
LED
SOC    
None    
Pack     Pack
System    
Pack
System    
System     System     System     Pack     System     Pack     Pack     Pack     Pack     Pack
System    
Pack
System    
Pack
System    
Pack     Pack     Pack     Pack    
Impedance Track     CEDV     CEDV     Impedance Track     Impedance Track     Impedance Track     Impedance Track     Dynamic Voltage Correlation     Impedance Track     Impedance Track     Impedance Track     Impedance Track     CEDV     Impedance Track     Primary     CEDV     Impedance Track     CEDV     Impedance Track    
N/A     N/A     N/A     N/A     N/A     N/A     N/A     N/A