SLUSD89B
February 2019 – November 2019
BQ25887
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Simplified Schematic
4
Revision History
5
Device Comparison Table
6
Pin Configuration and Functions
Pin Functions
7
Specifications
7.1
Absolute Maximum Ratings
7.2
ESD Ratings
7.3
Recommended Operating Conditions
7.4
Thermal Information
7.5
Electrical Characteristics
7.6
Timing Requirements
7.7
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Device Power-On-Reset
8.3.2
Device Power Up from Input Source
8.3.2.1
Poor Source Qualification
8.3.2.2
Input Source Type Detection
8.3.2.2.1
PSEL Sets Input Current Limit
8.3.2.2.2
Force Input Current Limit Detection
8.3.2.3
Power Up REGN Regulator (LDO)
8.3.2.4
Converter Power Up
8.3.3
Input Current Optimizer (ICO)
8.3.4
Battery Charging Management
8.3.4.1
Autonomous Charging Cycle
8.3.4.2
Battery Charging Profile
8.3.4.3
Cell Balancing During Charging
8.3.4.4
Charging Termination
8.3.4.5
Thermistor Qualification
8.3.4.5.1
JEITA Guideline Compliance in Charge Mode
8.3.4.6
Charging Safety Timer
8.3.5
Integrated 16-Bit ADC for Monitoring
8.3.6
Status Outputs
8.3.6.1
Power Good Indicator (PG)
8.3.6.2
Charging Status Indicator (STAT)
8.3.6.3
Interrupt to Host
8.3.7
Input Current Limit on ILIM Pin
8.3.8
Voltage and Current Monitoring
8.3.8.1
Voltage and Current Monitoring in Boost Mode
8.3.8.1.1
Input Over-Voltage Protection
8.3.8.1.2
Input Under-Voltage Protection
8.3.9
Thermal Regulation and Thermal Shutdown
8.3.9.1
Thermal Protection in Boost Mode
8.3.10
Battery Protection
8.3.11
Serial Interface
8.3.11.1
Data Validity
8.3.11.2
START and STOP Conditions
8.3.11.3
Byte Format
8.3.11.4
Acknowledge (ACK) and Not Acknowledge (NACK)
8.3.11.5
Slave Address and Data Direction Bit
8.3.11.6
Single Write and Read
8.3.11.7
Multi-Write and Multi-Read
8.4
Device Functional Modes
8.4.1
Host Mode and Default Mode
8.5
Register Maps
8.5.1
Cell Voltage Regulation Limit Register (Address = 00h) [reset = A0h]
Table 8.
REG00 Register Field Descriptions
8.5.2
Charger Current Limit Register (Address = 01h) [reset = 5Eh]
Table 9.
REG01 Register Field Descriptions
8.5.3
Input Voltage Limit Register (Address = 02h) [reset = 84h]
Table 10.
REG02 Register Field Descriptions
8.5.4
Input Current Limit Register (Address = 03h) [reset = 39h ]
Table 11.
REG03 Register Field Descriptions
8.5.5
Precharge and Termination Current Limit Register (Address = 04h) [reset = 22h]
Table 12.
REG04 Register Field Descriptions
8.5.6
Charger Control 1 Register (Address = 05h) [reset = 9Dh]
Table 13.
REG05 Register Field Descriptions
8.5.7
Charger Control 2 Register (Address = 06h) [reset = 7Dh]
Table 14.
REG06 Register Field Descriptions
8.5.8
Charger Control 3 Register (Address = 07h) [reset = 00h]
Table 15.
REG07 Register Field Descriptions
8.5.9
Charger Control 4 Register (Address = 08h) [reset = 0Dh]
Table 16.
REG08 Register Field Descriptions
8.5.10
Reserved Register (Address = 09h) [reset = 00h]
Table 17.
REG09 Register Field Descriptions
8.5.11
ICO Current Limit in Use Register (Address = 0Ah) [reset = XXh]
Table 18.
REG0A Register Field Descriptions
8.5.12
Charger Status 1 Register (Address = 0Bh) [reset = XXh]
Table 19.
REG0B Register Field Descriptions
8.5.13
Charger Status 2 Register (Address = 0Ch) [reset = XXh]
Table 20.
REG0C Register Field Descriptions
8.5.14
NTC Status Register (Address = 0Dh) [reset = 0Xh]
Table 21.
REG0D Register Field Descriptions
8.5.15
FAULT Status Register (Address = 0Eh) [reset = XXh]
Table 22.
REG0E Register Field Descriptions
8.5.16
Charger Flag 1 Register (Address = 0Fh) [reset = 00h]
Table 23.
REG0F Register Field Descriptions
8.5.17
Charger Flag 2 Register (Address = 10h) [reset = 00h]
Table 24.
REG10 Register Field Descriptions
8.5.18
FAULT Flag Register (Address = 11h) [reset = 00h]
Table 25.
REG11 Register Field Descriptions
8.5.19
Charger Mask 1 Register (Address = 12h) [reset = 00h]
Table 26.
REG12 Register Field Descriptions
8.5.20
Charger Mask 2 Register (Address = 13h) [reset = 00h]
Table 27.
REG13 Register Field Descriptions
8.5.21
FAULT Mask Register (Address = 14h) [reset = 00h]
Table 28.
REG14 Register Field Descriptions
8.5.22
ADC Control Register (Address = 15h) [reset = 30h]
Table 29.
REG15 Register Field Descriptions
8.5.23
ADC Function Disable Register (Address = 16h) [reset = 00h]
Table 30.
REG16 Register Field Descriptions
8.5.24
IBUS ADC 1 Register (Address = 17h) [reset = 00h]
Table 31.
REG17 Register Field Descriptions
8.5.25
IBUS ADC 0 Register (Address = 18h) [reset = 00h]
Table 32.
REG18 Register Field Descriptions
8.5.26
ICHG ADC 1 Register (Address = 19h) [reset = 00h]
Table 33.
REG19 Register Field Descriptions
8.5.27
ICHG ADC 0 Register (Address = 1Ah) [reset = 00h]
Table 34.
REG1A Register Field Descriptions
8.5.28
VBUS ADC 1 Register (Address = 1Bh) [reset = 00h]
Table 35.
REG1B Register Field Descriptions
8.5.29
VBUS ADC 0 Register (Address = 1Ch) [reset = 00h]
Table 36.
REG1C Register Field Descriptions
8.5.30
VBAT ADC 1 Register (Address = 1Dh) [reset = 00h]
Table 37.
REG1D Register Field Descriptions
8.5.31
VBAT ADC 0 Register (Address = 1Eh) [reset = 00h]
Table 38.
REG1E Register Field Descriptions
8.5.32
VCELLTOP ADC 1 Register (Address = 1Fh) [reset = 00h]
Table 39.
REG1F Register Field Descriptions
8.5.33
VCELLTOP ADC 0 Register (Address = 20h) [reset = 00h]
Table 40.
REG20 Register Field Descriptions
8.5.34
TS ADC 1 Register (Address = 21h) [reset = 00h]
Table 41.
REG21 Register Field Descriptions
8.5.35
TS ADC 0 Register (Address = 22h) [reset = 00h]
Table 42.
REG22 Register Field Descriptions
8.5.36
TDIE ADC 1 Register (Address = 23h) [reset = 00h]
Table 43.
REG23 Register Field Descriptions
8.5.37
TDIE ADC 0 Register (Address = 24h) [reset = 00h]
Table 44.
REG24 Register Field Descriptions
8.5.38
Part Information Register (Address = 25h) [reset = 28h]
Table 45.
REG25 Register Field Descriptions
8.5.39
VCELLBOT ADC 1 Register (Address = 26h) [reset = 00h]
Table 46.
REG26 Register Field Descriptions
8.5.40
VCELLBOT ADC 0 Register (Address = 27h) [reset = 00h]
Table 47.
REG27 Register Field Descriptions
8.5.41
Cell Balancing Control 1 Register (Address = 28h) [reset = 2Ah]
Table 48.
REG28 Register Field Descriptions
8.5.42
Cell Balancing Control 2 Register (Address = 29h) [reset = F4h]
Table 49.
REG29 Register Field Descriptions
8.5.43
Cell Balancing Status and Control Register (Address = 2Ah) [reset = 81h]
Table 50.
REG2A Register Field Descriptions
8.5.44
Cell Balancing Flag Register (Address = 2Bh) [reset = 00h]
Table 51.
REG2B Register Field Descriptions
8.5.45
Cell Balancing Mask Register (Address = 2Ch) [reset = 00h]
Table 52.
REG2C Register Field Descriptions
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Inductor Selection
9.2.2.2
Input (VBUS / PMID) Capacitor
9.2.2.3
Output (VSNS) Capacitor
9.2.3
Application Curves
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Device Support
12.1.1
Third-Party Products Disclaimer
12.2
Documentation Support
12.2.1
Related Documentation
12.3
Receiving Notification of Documentation Updates
12.4
Support Resources
12.5
Trademarks
12.6
Electrostatic Discharge Caution
12.7
Glossary
13
Mechanical, Packaging, and Orderable Information
8.3.9
Thermal Regulation and Thermal Shutdown