Table of Contents

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

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

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

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

5 Description (cont.)...........................................................3

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

Pin 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....................................................4

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

7.6 Internal 1.8-V LDO (REG18).......................................5

7.7 I/O (CE, PULS, INT)....................................................5

7.8 Internal Temperature Sensor...................................... 5

7.9 NTC Thermistor Measurement Support......................5

7.10 Coulomb Counter (CC)............................................. 6

7.11 Analog Digital Converter (ADC)................................ 6

7.12 Internal Oscillator Specifications...............................6

7.13 Voltage Reference1 (REF1)......................................7

7.14 Voltage Reference2 (REF2)......................................7

7.15 Flash Memory........................................................... 7

7.16 I2C I/O....................................................................... 7

7.17 I2C Timing — 100 kHz.............................................. 7

7.18 I2C Timing — 400 kHz.............................................. 8

7.19 HDQ Timing.............................................................. 8

7.20 Typical Characteristics............................................ 10

8 Detailed Description...................................................... 11

8.1 Overview................................................................... 11

8.2 Functional Block Diagram......................................... 11

8.3 Feature Description...................................................11

8.4 Device Functional Modes..........................................13

9 Applications and Implementation................................ 15

9.1 Application Information............................................. 15

9.2 Typical Applications.................................................. 15

10 Power Supply Recommendations..............................17

11 Layout........................................................................... 18

11.1 Layout Guidelines................................................... 18

11.2 Layout Example...................................................... 19

12 Device and Documentation Support..........................20

12.1 Documentation Support.......................................... 20

12.2 Receiving Notification of Documentation Updates..20

12.3 Support Resources................................................. 20

12.4 Trademarks.............................................................20

12.5 Electrostatic Discharge Caution..............................20

12.6 Glossary..................................................................20

13 Mechanical Information.............................................. 20

4 Revision History

Date

Revision

Notes

September 2020

*

Initial Release

BQ27Z561-R2

SLUSE22 – SEPTEMBER 2020

www.ti.com

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