1 Features

1• 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

2 Applications

• Light Electric Vehicles (LEVs): eBikes, eScooters,

Pedelec, and Pedal-Assist Bicycles

• Power and Gardening Tools

• Battery Backup and Uninterruptible Power Supply

(UPS) Systems

• Wireless Base Station Backup Systems

• Telecom Power Systems

• Handheld Vacuum Cleaners and Robot Vacuums

3 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.