ZHCSP94A
November 2021 – February 2022
BQ27Z746
PRODUCTION DATA
1
特性
2
应用
3
说明
4
Revision History
5
Pin Configurations and Functions
6
Specifications
6.1
Absolute Maximum Ratings
6.2
ESD Ratings
6.3
Recommended Operating Conditions
6.4
Thermal Information
6.5
Electrical Characteristics
6.5.1
Supply Current
6.5.2
Common Analog (LDO, LFO, HFO, REF1, REF2, I-WAKE)
6.5.3
Battery Protection (CHG, DSG)
6.5.4
Cell Sensing Output (BAT_SP, BAT_SN)
6.5.5
Gauge Measurements (ADC, CC, Temperature)
6.5.6
Flash Memory
6.6
Digital I/O: DC Characteristics
6.7
Digital I/O: Timing Characteristics
6.8
Typical Characteristics
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
BQ27Z746 Processor
7.3.2
Battery Parameter Measurements
7.3.2.1
Coulomb Counter (CC) and Digital Filter
7.3.2.2
ADC Multiplexer
7.3.2.3
Analog-to-Digital Converter (ADC)
7.3.2.4
Internal Temperature Sensor
7.3.2.5
External Temperature Sensor Support
7.3.3
Power Supply Control
7.3.4
Bus Communication Interface
7.3.5
Low Frequency Oscillator
7.3.6
High Frequency Oscillator
7.3.7
1.8-V Low Dropout Regulator
7.3.8
Internal Voltage References
7.3.9
Overcurrent in Discharge Protection
7.3.10
Overcurrent in Charge Protection
7.3.11
Short-Circuit Current in Discharge Protection
7.3.12
Primary Protection Features
7.3.13
Battery Sensing
7.3.14
Gas Gauging
7.3.15
Zero Volt Charging (ZVCHG)
7.3.16
Charge Control Features
7.3.17
Authentication
7.4
Device Functional Modes
7.4.1
Lifetime Logging Features
7.4.2
Configuration
7.4.2.1
Coulomb Counting
7.4.2.2
Cell Voltage Measurements
7.4.2.3
Auto Calibration
7.4.2.4
Temperature Measurements
8
Applications and Implementation
8.1
Application Information
8.2
Typical Applications
8.2.1
Design Requirements (Default)
8.2.2
Detailed Design Procedure
8.2.2.1
Changing Design Parameters
8.2.3
Calibration Process
8.2.4
Gauging Data Updates
8.2.4.1
Application Curve
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
11.2.1
Related Documentation
11.3
接收文档更新通知
11.4
支持资源
11.5
Trademarks
11.6
Electrostatic Discharge Caution
11.7
术语表
12
Mechanical, Orderable, and Packaging Information
封装选项
机械数据 (封装 | 引脚)
YAH|15
MXBG425
散热焊盘机械数据 (封装 | 引脚)
订购信息
zhcsp94a_oa
zhcsp94a_pm
7.2
Functional Block Diagram