BQ78350-R1 (ACTIVE)

CEDV Li-Ion Gas Gauge and Battery Management Controller

 

Description

The Texas Instruments bq78350-R1 Li-Ion and LiFePO4 Battery Management Controller and companion to the bq769x0 family of Analog Front End (AFE) protection devices provides a comprehensive set of Battery Management System (BMS) subsystems, helping to accelerate product development for faster time-to-market.

The bq78350-R1 controller and the bq769x0 AFE support 3-series to 15-series cell applications. The bq78350-R1 device provides an accurate fuel gauge and state-of-health (SoH) monitor, as well as cell balancing and a full range of voltage-, current-, and temperature-based protection features.

The bq78350-R1 device offers optional LED or LCD display configurations for capacity reporting. It also makes data available over its SMBus 1.1 interface. Battery history and diagnostic data is also kept within the device in non-volatile memory and is available over the same interface.

Features

  • Compensated End-of-Discharge Voltage (CEDV) Gauging Algorithm
  • Supports SMBus Host Communication
  • Flexible Configuration for 3- to 5-Series (bq76920), 6- to 10-Series (bq76930), and 9- to 15-Series (bq76940) Li-Ion and LiFePO4 Batteries
  • Supports Battery Configurations up to 320 Ahr
  • Supports Charge and Discharge Current Reporting up to 320 A
  • On-Chip Temperature Sensor Option
  • External NTC Thermistor Support from Companion AFE
  • Full Array of Programmable Protection Features
    • Voltage, Current, and Temperature
    • System Components
  • Lifetime Data Logging
  • Supports CC-CV Charging, Including Precharge, Charge Inhibit, and Charge Suspend
  • Offers an Optional Resistor Programmable SMBus Slave Address for up to Eight Different Bus Addresses
  • Drives up to a 5-Segment LED or LCD Display for State-Of-Charge Indication
  • Provides SHA-1 Authentication

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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
BQ78350-R1 BQ27510-G3 BQ27542-G1 BQ34110 BQ34Z100-G1 BQ40Z50-R1 BQ40Z60 BQ78Z100
>4 Cells    Single Cell    Single Cell    2-4 Cells
>4 Cells
Single Cell   
2-4 Cells
>4 Cells
Single Cell   
2-4 Cells
Single Cell   
2-4 Cells    1-2 Cells   
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   
Li-Ion/Li-Polymer
LiFePO4   
Li-Ion/Li-Polymer
LiFePO4   
Li-Ion/Li-Polymer   
320000    16000    32000    29000    29000    29000    29000    14000   
I2C
SMBus   
I2C    HDQ
I2C   
I2C    HDQ
I2C   
SMBus    SMBus    HDQ   
100    300    100    100    100    100    100    100   
LCD
LED
SOC   
None    None    None    LED    LED    LED    None   
Pack    System    Pack    Pack
System   
Pack
System   
Pack    Pack
System   
Pack   
CEDV    IT (High accuracy)    IT (High accuracy)    CEDV    IT (High accuracy)    IT (High accuracy)    IT (High accuracy)    IT (High accuracy)   
External
Internal   
N/A    N/A    N/A    N/A    External
Internal   
External
Internal   
External
Internal   
Cell Balancing
Integrated Protector
SHA-1 Authentication   
N/A    SHA-1 Authentication    Accumulated Coulomb Count
End of Service
SHA-1 Authentication   
SHA-1 Authentication    Cell Balancing
Integrated Protector
SHA-1 Authentication
Turbo Mode   
Battery Management Unit
Cell Balancing
Integrated Protector
SHA-1 Authentication
Turbo Mode   
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   
30TSSOP    12SON    12SON    14TSSOP    14TSSOP    32VQFN    32VQFN    12SON