Table of Contents

1 Features............................................................................1

2 Applications..................................................................... 1

3 Description.......................................................................1

4 Revision History.............................................................. 2

5 Description (continued).................................................. 2

6 Pin Configuration and Functions...................................3

7 Specifications.................................................................. 4

7.1 Absolute Maximum Ratings........................................ 4

7.2 ESD Ratings............................................................... 4

7.3 Recommended Operating Conditions.........................4

7.4 Thermal Information....................................................5

7.5 Supply Current............................................................ 5

7.6 Power Supply Control................................................. 5

7.7 Low-Voltage General Purpose I/O, TS1......................5

7.8 Power-On Reset (POR).............................................. 6

7.9 Internal 1.8-V LDO...................................................... 6

7.10 Current Wake Comparator........................................ 6

7.11 Coulomb Counter...................................................... 7

7.12 ADC Digital Filter...................................................... 7

7.13 ADC Multiplexer........................................................ 7

7.14 Cell Balancing Support............................................. 8

7.15 Internal Temperature Sensor.................................... 8

7.16 NTC Thermistor Measurement Support....................8

7.17 High-Frequency Oscillator........................................ 8

7.18 Low-Frequency Oscillator......................................... 8

7.19 Voltage Reference 1................................................. 9

7.20 Voltage Reference 2................................................. 9

7.21 Instruction Flash........................................................9

7.22 Data Flash...............................................................10

7.23 Current Protection Thresholds................................ 10

7.24 Current Protection Timing....................................... 11

7.25 N-CH FET Drive (CHG, DSG).................................11

7.26 I2C Interface I/O...................................................... 12

7.27 I2C Interface Timing ............................................... 12

7.28 Typical Characteristics............................................ 13

8 Detailed Description......................................................16

8.1 Overview................................................................... 16

8.2 Functional Block Diagram......................................... 16

8.3 Feature Description...................................................17

8.4 Device Functional Modes..........................................21

9 Applications and Implementation................................ 23

9.1 Application Information............................................. 23

9.2 Typical Applications.................................................. 23

10 Power Supply Recommendations..............................26

11 Layout........................................................................... 27

11.1 Layout Guidelines................................................... 27

11.2 Layout Example...................................................... 28

12 Device and Documentation Support..........................29

12.1 Third-Party Products Disclaimer............................. 29

12.2 Documentation Support.......................................... 29

12.3 Receiving Notification of Documentation Updates..29

12.4 Support Resources................................................. 29

12.5 Trademarks.............................................................29

12.6 Electrostatic Discharge Caution..............................29

12.7 Glossary..................................................................29

13 Mechanical, Packaging, and Orderable

Information.................................................................... 29

4 Revision History

Changes from Revision A (February 2020) to Revision B (January 2022)

Page

• Changed Absolute Maximum Ratings ............................................................................................................... 4

Changes from Revision * (February 2020) to Revision A (February 2020)

Page

• Changed I2C Interface I/O ............................................................................................................................... 12

5 Description (continued)

The BQ28Z610-R1 device provides an array of battery and system safety functions, including overcurrent in

discharge, short circuit in charge, and short circuit in discharge protection for the battery, as well as FET

protection for the N-channel FETs, internal AFE watchdog, and cell balancing. Through firmware, the devices

can provide a larger array of features including protection against overvoltage, undervoltage, overtemperature,

and more.

BQ28Z610-R1

SLUSE07B – JANUARY 2020 – REVISED JANUARY 2022

www.ti.com

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