BQ40Z50-R2 1-4 Series Li-Ion Battery Pack Manager | Battery Fuel (Gas) Gauge | TI.com

BQ40Z50-R2 (ACTIVE)

1-4 Series Li-Ion Battery Pack Manager | Battery Fuel (Gas) Gauge

1-4 Series Li-Ion Battery Pack Manager | Battery Fuel (Gas) Gauge - BQ40Z50-R2
 

Description

The bq40z50-R2 device, incorporating patented Impedance Track™ technology, is a fully integrated, single-chip, pack-based solution that provides a rich array of features for gas gauging, protection, and authentication for 1-series, 2-series, 3-series, and 4-series cell Li-Ion and Li-Polymer battery packs.

Using its integrated high-performance analog peripherals, the bq40z50-R2 device measures and maintains an accurate record of available capacity, voltage, current, temperature, and other critical parameters in Li-Ion or Li-Polymer batteries, and reports this information to the system host controller over an SMBus v1.1 compatible interface.

The bq40z50-R2 device supports TURBO Mode 2.0 by providing the available max power and max current to the host system. The device also supports Battery Trip Point to send a BTP interrupt signal to the host system at the preset state of charge thresholds.

The bq40z50-R2 provides software-based 1st- and 2nd-level safety protection against overvoltage, undervoltage, overcurrent, short-circuit current, overload, and overtemperature conditions, as well as other pack- and cell-related faults.

SHA-1 authentication, with secure memory for authentication keys, enables identification of genuine battery packs.

The compact 32-lead QFN package minimizes solution cost and size for smart batteries while providing maximum functionality and safety for battery gauging applications.

Features

  • Fully Integrated 1-Series, 2-Series, 3-Series, and 4-Series Li-Ion or Li-Polymer Cell Battery Pack Manager and Protection
  • Next-Generation Patented Impedance Track™ Technology Accurately Measures Available Charge in Li-Ion and Li-Polymer Batteries
  • High Side N-CH Protection FET Drive
  • Integrated Cell Balancing While Charging or At Rest
  • Suitable for Batteries Between 100 mAh and 29 Ah
  • Full Array of Programmable Protection Features
    • Voltage
    • Current
    • Temperature
    • Charge Timeout
    • CHG/DSG FETs
    • AFE
  • Sophisticated Charge Algorithms
    • JEITA
    • Enhanced Charging
    • Adaptive Charging
    • Cell Balancing
  • Supports TURBO Mode 2.0
  • Supports Battery Trip Point (BTP)
  • Diagnostic Lifetime Data Monitor and Black Box Recorder
  • LED Display
  • Supports Two-Wire SMBus v1.1 Interface
  • SHA-1 Authentication
  • IATA Support
  • Compact Package: 32-Lead QFN (RSM)

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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
BQ40Z50-R2 BQ28Z610 BQ4050 BQ40Z80
2-4 Cells
Single Cell    
1-2 Cells     2-4 Cells
Single Cell    
>4 Cells    
Li-Ion/Li-Polymer
LiFePO4    
Li-Ion/Li-Polymer     Li-Ion/Li-Polymer
LiFePO4    
Li-Ion/Li-Polymer
LiFePO4    
29000     14000     29000     29000    
SMBus     I2C     SMBus     SMBus    
500     100     500     500    
LED     None     LED     LED    
Pack     Pack     Pack     Pack    
Impedance Track     Impedance Track     CEDV     IT (High accuracy)
Impedance Track    
External
Internal    
External
Internal    
External
Internal    
External
Internal    
Integrated Protector
SHA-1 Authentication
Turbo Mode    
Battery Management Unit
Cell Balancing
Integrated Protector
SHA-1 Authentication    
Cell Balancing
Integrated Protector
SHA-1 Authentication    
Cell Balancing
Integrated Protector
SHA-1 Authentication
Turbo Mode    
-40 to 85     -40 to 85     -40 to 85     -40 to 85    
32VQFN     12SON     32VQFN     32VQFN