BQ27750 Impedance Track™ Gas Gauge and Protection Solution for 1 Series | TI.com

BQ27750 (ACTIVE)

Impedance Track™ Gas Gauge and Protection Solution for 1 Series

 

Description

The Texas Instruments bq27750 Impedance Track™ Gas Gauge and Protection Solution is a highly integrated, accurate 1-series cell gas gauge and protection solution.

The bq27750 device provides a fully integrated pack-based solution with a flash programmable custom reduced instruction-set CPU (RISC), safety protection, and authentication for 1-series cell Li-Ion and Li-Polymer battery packs.

The bq27750 gas gauge communicates via an I2C-compatible interface and combines an ultra-low-power, high-speed TI bqBMP processor, high-accuracy analog measurement capabilities, integrated flash memory, an array of peripheral and communication ports, an N-CH FET drive, and a SHA-1 Authentication transform responder into a complete, high-performance battery management solution.

Features

  • High-Side Protection N-CH FET Drive Allows Serial Bus Communication During Fault Conditions
  • Programmable Protection Levels for Voltage, Current, and Temperature
  • Analog Front End with Two Independent ADCs
    • Support for Simultaneous Current and Voltage Sampling
    • High-Accuracy Coulomb Counter with Input Offset Error < 1 µV (Typical)
  • Supports Down to 1-mΩ Current Sense Resistor While Capable of 1-mA Current Measurement
  • SHA-1 Authentication Responder for Increased Battery Pack Security
  • 400-kHz I2C™ Bus Communications Interface for High-Speed Programming and Data Access
  • Compact 12-Pin VSON Package (DRZ)

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Parametrics Compare all products in Battery fuel gauges

 
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
BQ27750 BQ27542-G1 BQ27546-G1 BQ27742-G1 BQ27743 BQ27Z561 BQ28Z610 BQ4050 BQ78Z100
Single Cell     Single Cell     Single Cell     Single Cell     Single Cell     Single Cell     1-2 Cells     2-4 Cells
Single Cell    
1-2 Cells    
Li-Ion/Li-Polymer
LiFePO4    
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    
14000     32000     32000     16000     30000     30000     14000     29000     14000    
I2C     HDQ
I2C    
HDQ
I2C    
HDQ
I2C    
HDQ
I2C    
HDQ
I2C    
I2C     SMBus     HDQ    
100     100     100     200     100     100     100     500     100    
None     None     None     None     None     None     None     LED     None    
Pack     Pack     Pack     Pack     Pack     Pack     Pack     Pack     Pack    
Impedance Track     Impedance Track     Impedance Track     Impedance Track     Impedance Track     Impedance Track     Impedance Track     CEDV     Impedance Track    
N/A     N/A     N/A     N/A     N/A     N/A     External
Internal    
External
Internal    
External
Internal    
Accumulated Coulomb Count
Battery Management Unit
Integrated Protector
SHA-1 Authentication    
SHA-1 Authentication     SHA-1 Authentication     Integrated Protector
SHA-1 Authentication    
Integrated Protector
SHA-1 Authentication    
SHA-256 Authentication     Battery Management Unit
Cell Balancing
Integrated Protector
SHA-1 Authentication    
Cell Balancing
Integrated Protector
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     -40 to 85     -40 to 85     -40 to 85     -40 to 85    
12SON     12SON     15DSBGA     15DSBGA     15DSBGA     12DSBGA     12SON     32VQFN     12SON