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BQ78350-R1

NOT RECOMMENDED FOR NEW DESIGNS

CEDV li-ion gas gauge and battery management controller

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Data sheet
BQ78350-R1 is not recommended for new designs
This product continues to be available for existing customers. New designs should consider an alternate product.
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Drop-in replacement with upgraded functionality to the compared device
BQ78350-R1A ACTIVE CEDV li-ion gas gauge and battery management controller Newer firmware version available

BQ78350-R1

NOT RECOMMENDED FOR NEW DESIGNS
Data sheet Order now

Product details

Cell chemistry Li-Ion/Li-Polymer, LiFePO4 Number of series cells >4 Cells Communication interface I2C, SMBus Battery capacity (min) (mAh) 100 Battery capacity (max) (mAh) 320000 Implementation Pack External capacity indication LCD, LED, SOC Features CEDV algorithm Operating temperature range (°C) -40 to 85 Cell balancing External, Internal Rating Catalog
Cell chemistry Li-Ion/Li-Polymer, LiFePO4 Number of series cells >4 Cells Communication interface I2C, SMBus Battery capacity (min) (mAh) 100 Battery capacity (max) (mAh) 320000 Implementation Pack External capacity indication LCD, LED, SOC Features CEDV algorithm Operating temperature range (°C) -40 to 85 Cell balancing External, Internal Rating Catalog
TSSOP (DBT) 30 49.92 mm² 7.8 x 6.4
  • 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
  • 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

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.

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.
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Device firmware is available (BQ78350-R2-DEVICE-FW). Request now

Technical documentation

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* Data sheet bq78350-R1 CEDV Li-Ion Gas Gauge and Battery Management Controller Companion to the bq769x0 Battery Monitoring AFE datasheet (Rev. B) PDF | HTML 06 Nov 2018

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