BQ78350-R1 CEDV Li-Ion Gas Gauge and Battery Management Controller | TI.com

BQ78350-R1 (ACTIVE)

CEDV Li-Ion Gas Gauge and Battery Management Controller

CEDV Li-Ion Gas Gauge and Battery Management Controller - BQ78350-R1
 

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 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
BQ78350-R1 BQ27510-G3 BQ27542-G1 BQ34110 BQ34Z100-G1 BQ40Z50-R1 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    
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    
Li-Ion/Li-Polymer
LiFePO4    
Li-Ion/Li-Polymer
LiFePO4    
Li-Ion/Li-Polymer    
320000     16000     32000     29000     29000     29000     14000    
I2C
SMBus    
I2C     HDQ
I2C    
I2C     HDQ
I2C    
SMBus     HDQ    
100     300     100     100     100     100     100    
LCD
LED
SOC    
None     None     None     LED     LED     None    
Pack     System     Pack     Pack
System    
Pack
System    
Pack     Pack    
CEDV     Impedance Track     Impedance Track     CEDV     Impedance Track     Impedance Track     Impedance Track    
External
Internal    
N/A     N/A     N/A     N/A     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    
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    
30TSSOP     12SON     12SON     14TSSOP     14TSSOP     32VQFN     12SON