SLUSBS8B
December 2013 – November 2019
BQ40Z50
PRODUCTION DATA.
1
Features
2
Applications
3
Description
Device Images
Simplified Schematic
4
Revision History
5
Description (continued)
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: Supply Current
7.6
Electrical Characteristics: Power Supply Control
7.7
Electrical Characteristics: AFE Power-On Reset
7.8
Electrical Characteristics: AFE Watchdog Reset and Wake Timer
7.9
Electrical Characteristics: Current Wake Comparator
7.10
Electrical Characteristics: VC1, VC2, VC3, VC4, BAT, PACK
7.11
Electrical Characteristics: SMBD, SMBC
7.12
Electrical Characteristics: PRES, BTP_INT, DISP
7.13
Electrical Characteristics: LEDCNTLA, LEDCNTLB, LEDCNTLC
7.14
Electrical Characteristics: Coulomb Counter
7.15
Electrical Characteristics: CC Digital Filter
7.16
Electrical Characteristics: ADC
7.17
Electrical Characteristics: ADC Digital Filter
7.18
Electrical Characteristics: CHG, DSG FET Drive
7.19
Electrical Characteristics: PCHG FET Drive
7.20
Electrical Characteristics: FUSE Drive
7.21
Electrical Characteristics: Internal Temperature Sensor
7.22
Electrical Characteristics: TS1, TS2, TS3, TS4
7.23
Electrical Characteristics: PTC, PTCEN
7.24
Electrical Characteristics: Internal 1.8-V LDO
7.25
Electrical Characteristics: High-Frequency Oscillator
7.26
Electrical Characteristics: Low-Frequency Oscillator
7.27
Electrical Characteristics: Voltage Reference 1
7.28
Electrical Characteristics: Voltage Reference 2
7.29
Electrical Characteristics: Instruction Flash
7.30
Electrical Characteristics: Data Flash
7.31
Electrical Characteristics: OCD, SCC, SCD1, SCD2 Current Protection Thresholds
7.32
Timing Requirements: OCD, SCC, SCD1, SCD2 Current Protection Timing
7.33
Timing Requirements: SMBus
7.34
Timing Requirements: SMBus XL
7.35
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Primary (1st Level) Safety Features
8.3.2
Secondary (2nd Level) Safety Features
8.3.3
Charge Control Features
8.3.4
Gas Gauging
8.3.5
Configuration
8.3.5.1
Oscillator Function
8.3.5.2
System Present Operation
8.3.5.3
Emergency Shutdown
8.3.5.4
1-Series, 2-Series, 3-Series, or 4-Series Cell Configuration
8.3.5.5
Cell Balancing
8.3.6
Battery Parameter Measurements
8.3.6.1
Charge and Discharge Counting
8.3.7
Battery Trip Point (BTP)
8.3.8
Lifetime Data Logging Features
8.3.9
Authentication
8.3.10
LED Display
8.3.11
Voltage
8.3.12
Current
8.3.13
Temperature
8.3.14
Communications
8.3.14.1
SMBus On and Off State
8.3.14.2
SBS Commands
8.4
Device Functional Modes
9
Applications and Implementation
9.1
Application Information
9.2
Typical Applications
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
High-Current Path
9.2.2.1.1
Protection FETs
9.2.2.1.2
Chemical Fuse
9.2.2.1.3
Lithium-Ion Cell Connections
9.2.2.1.4
Sense Resistor
9.2.2.1.5
ESD Mitigation
9.2.2.2
Gas Gauge Circuit
9.2.2.2.1
Coulomb-Counting Interface
9.2.2.2.2
Power Supply Decoupling and PBI
9.2.2.2.3
System Present
9.2.2.2.4
SMBus Communication
9.2.2.2.5
FUSE Circuitry
9.2.2.3
Secondary-Current Protection
9.2.2.3.1
Cell and Battery Inputs
9.2.2.3.2
External Cell Balancing
9.2.2.3.3
PACK and FET Control
9.2.2.3.4
Temperature Output
9.2.2.3.5
LEDs
9.2.2.3.6
Safety PTC Thermistor
9.2.3
Application Curves
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.1.1
Protector FET Bypass and Pack Terminal Bypass Capacitors
11.1.2
ESD Spark Gap
11.2
Layout Example
12
Device and Documentation Support
12.1
Documentation Support
12.1.1
Related Documentation
12.2
Receiving Notification of Documentation Updates
12.3
Support Resources
12.4
Trademarks
12.5
Electrostatic Discharge Caution
12.6
Glossary
13
Mechanical, Packaging, and Orderable Information
パッケージ・オプション
メカニカル・データ(パッケージ|ピン)
RSM|32
MPQF195B
サーマルパッド・メカニカル・データ
RSM|32
QFND239E
発注情報
slusbs8b_oa
slusbs8b_pm
7
Specifications