BAT

VC5

VC4

VC3

VC2

VC1

VSS

SCL

SDA

CHG

DSG

REGSRC

REGOUT

SRN

SRP

VC0

CAP 1

TS 1

ALERT

PUSH-BUTTON

FOR BOOT

PACK+

PACK–

VCC

ALERT

SDA

SCL

VSS

SMBD

SMBC

SMBD

SMBC

bq76920

PRES

LED1

LED2

LED3

LED4

LED5

KEYIN

BAT

VEN

COM

PWRM

GPIOA

SAFE

VAUX

SMBA

GPIOB

ADREN

RBI

PRECHG

MRST

DISP

Product

Folder

Sample &

Buy

Technical

Documents

Tools &

Software

Support &

Community

bq78350-R1

SLUSCD0 – AUGUST 2015

bq78350-R1 CEDV Li-Ion Gas Gauge and Battery Management Controller Companion to

the bq769x0 Battery Monitoring AFE

1

1 Features

•

Compensated End-of-Discharge Voltage (CEDV)

State-Of-Charge Indication

Gauging Algorithm

•

Provides SHA-1 Authentication

•

Supports SMBus Host Communication

2 Applications

•

Flexible Configuration for 3- to 5-Series

(bq76920), 6- to 10-Series (bq76930), and 9- to

•

Light Electric Vehicles (LEVs): eBikes, eScooters,

15-Series (bq76940) Li-Ion and LiFePO4 Batteries

Pedelec, and Pedal-Assist Bicycles

•

Supports Battery Configurations up to 320 Ahr

•

Power and Gardening Tools

•

Supports Charge and Discharge Current

•

Battery Backup and Uninterruptible Power Supply

Reporting up to 320 A

(UPS) Systems

•

On-Chip Temperature Sensor Option

•

Wireless Base Station Backup Systems

•

External NTC Thermistor Support from

•

Telecom Power Systems

Companion AFE

3 Description

•

Full Array of Programmable Protection Features

The

Texas

Instruments

bq78350-R1

Li-Ion

and

–

Voltage

LiFePO4

Battery

Management

Controller

and

–

Current

companion to the bq769x0 family of Analog Front

–

Temperature

End

(AFE)

protection

devices

provides

a

comprehensive set of Battery Management System

–

System Components

(BMS) subsystems, helping to accelerate product

•

Lifetime Data Logging

development for faster time-to-market.

•

Supports CC-CV Charging, Including Precharge,

Charge Inhibit, and Charge Suspend

Device Information(1)

•

Offers an Optional Resistor Programmable

PART NUMBER

PACKAGE

BODY SIZE (NOM)

SMBus Slave Address for up to Eight Different

bq78350-R1

TSSOP (30)

7.80 mm x 6.40 mm

Bus Addresses

(1) For all available packages, see the orderable addendum at

•

Drives up to a 5-Segment LED or LCD Display for

the end of the data sheet.

4 Simplified Schematic

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.