Table of Contents

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

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

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

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

5 Description (continued).................................................. 3

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

6.1 Pin Equivalent Diagrams.............................................5

7 Specifications.................................................................. 8

7.1 Absolute Maximum Ratings........................................ 8

7.2 ESD Ratings............................................................... 8

7.3 Recommended Operating Conditions.........................8

7.4 Thermal Information....................................................9

7.5 Supply Current............................................................ 9

7.6 Power Supply Control................................................. 9

7.7 AFE Power-On Reset............................................... 10

7.8 AFE Watchdog Reset and Wake Timer.................... 10

7.9 Current Wake Comparator........................................10

7.10 VC1, VC2, VC3, VC4, BAT, PACK.......................... 11

7.11 SMBD, SMBC..........................................................11

7.12 PRES, BTP_INT, DISP ...........................................11

7.13 LEDCNTLA, LEDCNTLB, LEDCNTLC................... 12

7.14 Coulomb Counter....................................................12

7.15 CC Digital Filter.......................................................12

7.16 ADC........................................................................ 12

7.17 ADC Digital Filter.................................................... 13

7.18 CHG, DSG FET Drive............................................. 13

7.19 PCHG FET Drive.................................................... 14

7.20 FUSE Drive............................................................. 14

7.21 Internal Temperature Sensor.................................. 14

7.22 TS1, TS2, TS3, TS4................................................15

7.23 PTC, PTCEN...........................................................15

7.24 Internal 1.8-V LDO.................................................. 15

7.25 High-Frequency Oscillator...................................... 15

7.26 Low-Frequency Oscillator....................................... 16

7.27 Voltage Reference 1............................................... 16

7.28 Voltage Reference 2............................................... 16

7.29 Instruction Flash......................................................16

7.30 Data Flash...............................................................17

7.31 OLD, SCC, SCD1, SCD2 Current Protection

Thresholds...................................................................17

7.32 Timing Requirements: OLD, SCC, SCD1,

SCD2 Current Protection Timing................................. 18

7.33 Timing Requirements: SMBus................................ 18

7.34 Timing Requirements: SMBus XL........................... 19

7.35 Typical Characteristics............................................ 20

8 Detailed Description......................................................24

8.1 Overview................................................................... 24

8.2 Functional Block Diagram......................................... 24

8.3 Feature Description...................................................25

8.4 Device Functional Modes..........................................28

9 Application and Implementation.................................. 29

9.1 Application Information............................................. 29

9.2 Typical Applications.................................................. 30

10 Power Supply Recommendations..............................41

11 Layout........................................................................... 42

11.1 Layout Guidelines................................................... 42

11.2 Layout Example...................................................... 44

12 Device and Documentation Support..........................46

12.1 Third-Party Products Disclaimer............................. 46

12.2 Documentation Support.......................................... 46

12.3 Support Resources................................................. 46

12.4 Trademarks.............................................................46

12.5 Electrostatic Discharge Caution..............................46

12.6 Glossary..................................................................46

13 Mechanical, Packaging, and Orderable

Information.................................................................... 46

4 Revision History

NOTE: Page numbers for previous revisions may differ from page numbers in the current version.

Changes from Revision B (July 2018) to Revision C (April 2021)

Page

• Changed all occurrences of OCD to OLD throughout the data sheet ................................................................1

Changes from Revision A (October 2017) to Revision B (July 2018)

Page

• Changed Pin Configuration and Functions ........................................................................................................ 5

• Changed System Present ................................................................................................................................34

BQ40Z50-R2

SLUSCS4C – JUNE 2017 – REVISED APRIL 2021

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