ZHCSVT2A
April 2022 – April 2024
BQ76922
PRODUCTION DATA
1
1
特性
2
应用
3
说明
4
Device Comparison Table
5
Pin Configuration and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information BQ76922
6.5
Supply Current
6.6
Digital I/O
6.7
LD Pin
6.8
Precharge (PCHG) and Predischarge (PDSG) FET Drive
6.9
FUSE Pin Functionality
6.10
REG18 LDO
6.11
REG0 Pre-regulator
6.12
REG1 LDO
6.13
Voltage References
6.14
Coulomb Counter
6.15
Coulomb Counter Digital Filter (CC1)
6.16
Current Measurement Digital Filter (CC2)
6.17
Current Wake Detector
6.18
Analog-to-Digital Converter
6.19
Cell Balancing
6.20
Cell Open Wire Detector
6.21
Internal Temperature Sensor
6.22
Thermistor Measurement
6.23
Internal Oscillators
6.24
High-side NFET Drivers
6.25
Comparator-Based Protection Subsystem
6.26
Timing Requirements – I2C Interface, 100kHz Mode
6.27
Timing Requirements – I2C Interface, 400kHz Mode
6.28
Timing Requirements – HDQ Interface
6.29
Interface Timing Diagrams
6.30
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Diagnostics
7.4
Device Configuration
7.4.1
Commands and Subcommands
7.4.2
Configuration Using OTP or Registers
7.4.3
Device Security
7.4.4
Scratchpad Memory
7.5
Measurement Subsystem
7.5.1
Voltage Measurement
7.5.1.1
Voltage Measurement Schedule
7.5.1.2
Using VC Pins for Cells Versus Interconnect
7.5.1.3
Cell 1 Voltage Validation During SLEEP Mode
7.5.2
General Purpose ADCIN Functionality
7.5.3
Coulomb Counter and Digital Filters
7.5.4
Synchronized Voltage and Current Measurement
7.5.5
Internal Temperature Measurement
7.5.6
Thermistor Temperature Measurement
7.5.7
Factory Trim of Voltage ADC
7.5.8
Voltage Calibration (ADC Measurements)
7.5.9
Voltage Calibration (COV and CUV Protections)
7.5.10
Current Calibration
7.5.11
Temperature Calibration
7.6
Primary and Secondary Protection Subsystems
7.6.1
Protections Overview
7.6.2
Primary Protections
7.6.3
Secondary Protections
7.6.4
High-Side NFET Drivers
7.6.5
Protection FETs Configuration and Control
7.6.5.1
FET Configuration
7.6.5.2
PRECHARGE and PREDISCHARGE Modes
7.6.6
Load Detect Functionality
7.7
Device Hardware Features
7.7.1
Voltage References
7.7.2
ADC Multiplexer
7.7.3
LDOs
7.7.3.1
Preregulator Control
7.7.3.2
REG1 LDO Control
7.7.4
Standalone Versus Host Interface
7.7.5
Multifunction Pin Controls
7.7.6
RST_SHUT Pin Operation
7.7.7
CFETOFF, DFETOFF, and BOTHOFF Pin Functionality
7.7.8
ALERT Pin Operation
7.7.9
Fuse Drive
7.7.10
Cell Open Wire
7.7.11
Low Frequency Oscillator
7.7.12
High Frequency Oscillator
7.8
Device Functional Modes
7.8.1
Overview
7.8.2
NORMAL Mode
7.8.3
SLEEP Mode
7.8.4
DEEPSLEEP Mode
7.8.5
SHUTDOWN Mode
7.8.6
CONFIG_UPDATE Mode
7.9
Serial Communications Interface
7.9.1
Serial Communications Overview
7.9.2
I2C Communications
7.9.3
HDQ Communications
7.10
Cell Balancing
7.10.1
Cell Balancing Overview
8
Application and Implementation
8.1
Application Information
8.2
Typical Applications
8.2.1
Design Requirements (Example)
8.2.2
Detailed Design Procedure
8.2.3
Application Performance Plot
8.2.4
Calibration Process
8.3
Random Cell Connection Support
8.4
Startup Timing
8.5
FET Driver Turn-Off
8.6
Unused Pins
9
Power Supply Requirements
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
第三方产品免责声明
11.2
Documentation Support
11.3
Trademarks
11.4
静电放电警告
11.5
术语表
12
Revision History
13
Mechanical, Packaging, Orderable Information
封装选项
请参考 PDF 数据表获取器件具体的封装图。
机械数据 (封装 | 引脚)
RSN|32
散热焊盘机械数据 (封装 | 引脚)
订购信息
zhcsvt2a_oa
7.8
Device Functional Modes