BAT

VC

4

VC3

VC2

VC1

VSS

SRN

SRP

PACK–

PRES

SMBC

SMBD

SMBD

SMBC

PBI

TS1 TS2

LEDCNTLA

LEDCNTLB

DISP

LEDCNTLC

TS3 TS4 BTP

BTP

VC1

VC2

VC3

OUT

VDD

GND

Cell 1

Cell 2

Cell 3

PRES

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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.

bq40z50-R2

SLUSCS4 – JUNE 2017

bq40z50-R2 1-Series, 2-Series, 3-Series, and 4-Series Li-Ion Battery Pack Manager

1

1 Features

1

•

Fully Integrated 1-Series, 2-Series, 3-Series, and

4-Series Li-Ion or Li-Polymer Cell Battery Pack

Manager and Protection

•

Next-Generation Patented Impedance Track™

Technology Accurately Measures Available

Charge in Li-Ion and Li-Polymer Batteries

•

High Side N-CH Protection FET Drive

•

Integrated Cell Balancing While Charging or At

Rest

•

Suitable for Batteries Between 100 mAh and

29 Ah

•

Full Array of Programmable Protection Features

–

Voltage

–

Current

–

Temperature

–

Charge Timeout

–

CHG/DSG FETs

–

AFE

•

Sophisticated Charge Algorithms

–

JEITA

–

Enhanced Charging

–

Adaptive Charging

–

Cell Balancing

•

Supports TURBO Mode 2.0

•

Supports Battery Trip Point (BTP)

•

Diagnostic Lifetime Data Monitor and Black Box

Recorder

•

LED Display

•

Supports Two-Wire SMBus v1.1 Interface

•

SHA-1 Authentication

•

IATA Support

•

Compact Package: 32-Lead QFN (RSM)

2 Applications

•

Tablets

•

Drones

•

UPS/Battery Backup Systems

•

Medical Equipment

3 Description

The

bq40z50-R2

device,

incorporating

patented

Impedance Track™ technology, is a fully integrated,

single-chip, pack-based solution that provides a rich

array of features for gas gauging, protection, and

authentication for 1-series, 2-series, 3-series, and 4-

series cell Li-Ion and Li-Polymer battery packs.

Using

its

integrated

high-performance

analog

peripherals, the bq40z50-R2 device measures and

maintains an accurate record of available capacity,

voltage,

current,

temperature,

and

other

critical

parameters in Li-Ion or Li-Polymer batteries, and

reports this information to the system host controller

over an SMBus v1.1 compatible interface.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

bq40z50-R2

VQFN (32)

4.00 mm × 4.00 mm

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

the end of the data sheet.

Simplified Schematic