BQ40Z50-R2 Datasheet, PDF (2/51 Pages) Texas Instruments – 1-Series, 2-Series, 3-Series, and 4-Series Li-Ion Battery Pack Manager

bq40z50-R2
SLUSCS4 – JUNE 2017
www.ti.com
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
7 Specifications......................................................... 7
7.1 Absolute Maximum Ratings ...................................... 7
7.2 ESD Ratings.............................................................. 7
7.3 Recommended Operating Conditions....................... 8
7.4 Thermal Information .................................................. 8
7.5 Supply Current .......................................................... 8
7.6 Power Supply Control ............................................... 9
7.7 AFE Power-On Reset ............................................... 9
7.8 AFE Watchdog Reset and Wake Timer.................... 9
7.9 Current Wake Comparator........................................ 9
7.10 VC1, VC2, VC3, VC4, BAT, PACK ....................... 10
7.11 SMBD, SMBC ....................................................... 10
7.12 PRES, BTP_INT, DISP ........................................ 10
7.13 LEDCNTLA, LEDCNTLB, LEDCNTLC ................ 11
7.14 Coulomb Counter .................................................. 11
7.15 CC Digital Filter..................................................... 11
7.16 ADC....................................................................... 11
7.17 ADC Digital Filter .................................................. 12
7.18 CHG, DSG FET Drive ........................................... 12
7.19 PCHG FET Drive .................................................. 13
7.20 FUSE Drive ........................................................... 13
7.21 Internal Temperature Sensor ................................ 13
7.22 TS1, TS2, TS3, TS4.............................................. 13
7.23 PTC, PTCEN......................................................... 14
7.24 Internal 1.8-V LDO ................................................ 14
7.25 High-Frequency Oscillator..................................... 14
7.26 Low-Frequency Oscillator ..................................... 14
7.27 Voltage Reference 1 ............................................. 15
7.28 Voltage Reference 2 ............................................. 15
7.29 Instruction Flash.................................................... 15
7.30 Data Flash............................................................. 15
7.31 OCD, SCC, SCD1, SCD2 Current Protection
Thresholds ............................................................... 16
7.32 Timing Requirements: OCD, SCC, SCD1, SCD2
Current Protection Timing ........................................ 16
7.33 Timing Requirements: SMBus .............................. 17
7.34 Timing Requirements: SMBus XL......................... 17
7.35 Typical Characteristics .......................................... 19
8 Detailed Description ............................................ 22
8.1 Overview ................................................................. 22
8.2 Functional Block Diagram ...................................... 22
8.3 Feature Description................................................. 23
8.4 Device Functional Modes........................................ 26
9 Applications and Implementation ...................... 27
9.1 Application Information .......................................... 27
9.2 Typical Applications ................................................ 28
10 Power Supply Recommendations ..................... 39
11 Layout................................................................... 39
11.1 Layout Guidelines ................................................. 39
11.2 Layout Example .................................................... 41
12 Device and Documentation Support ................. 43
12.1 Documentation Support ........................................ 43
12.2 Receiving Notification of Documentation Updates 43
12.3 Community Resources.......................................... 43
12.4 Trademarks ........................................................... 43
12.5 Electrostatic Discharge Caution ............................ 43
12.6 Glossary ................................................................ 43
13 Mechanical, Packaging, and Orderable
Information ........................................................... 43
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Date
June 2017
Revision
*
Notes
Initial Release
2
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