ZHCSHU6L
march 2018 – august 2023
BQ77915
PRODUCTION DATA
1
1
特性
2
应用
3
说明
4
Revision History
5
说明(续)
6
Device Comparison Table
7
Pin Configuration and Functions
8
Specifications
8.1
Absolute Maximum Ratings
8.2
ESD Ratings
8.3
Recommended Operating Conditions
8.4
Thermal Information
8.5
Electrical Characteristics
8.6
Typical Characteristics
9
Detailed Description
9.1
Overview
9.1.1
Device Functionality Summary
9.2
Functional Block Diagram
9.3
Feature Description
9.3.1
Protection Summary
9.3.2
Fault Operation
9.3.2.1
Operation in OV
9.3.2.2
Operation in UV
9.3.2.3
Operation in OW
9.3.2.4
Operation in OCD1
9.3.2.5
Operation in OCD2
9.3.2.6
Programming the OCD1/2 Delay Using the OCDP Pin
9.3.2.7
Operation in SCD
9.3.2.8
Operation in OCC
9.3.2.9
Overcurrent Recovery Timer
9.3.2.10
Load Detection and Load Removal Detection
9.3.2.11
Operation in OTC
9.3.2.12
Operation in OTD
9.3.2.13
Operation in UTC
9.3.2.14
Operation in UTD
9.3.3
Protection Response and Recovery Summary
9.3.4
Cell Balancing
9.3.5
HIBERNATE Mode Operation
9.3.6
Configuration CRC Check and Comparator Built-In-Self-Test
9.3.7
Fault Detection Method
9.3.7.1
Filtered Fault Detection
9.3.8
State Comparator
9.3.9
DSG FET Driver Operation
9.3.10
CHG FET Driver Operation
9.3.11
External Override of CHG and DSG Drivers
9.3.12
Configuring 3-Series, 4-Series, or 5-Series Modes
9.3.13
Stacking Implementations
9.3.14
Zero-Volt Battery Charging Inhibition
9.4
Device Functional Modes
9.4.1
Power Modes
9.4.1.1
Power On Reset (POR)
9.4.1.2
NORMAL Mode
9.4.1.3
FAULT Mode
9.4.1.4
HIBERNATE Mode
9.4.1.5
SHUTDOWN Mode
9.4.1.6
Customer Fast Production Test Modes
10
Application and Implementation
10.1
Application Information
10.1.1
Recommended System Implementation
10.1.1.1
CHG and DSG FET Rise and Fall Time
10.1.1.2
Protecting CHG and LD
10.1.1.3
Protecting the CHG FET
10.1.1.4
Using Load Detect for UV Fault Recovery
10.1.1.5
Temperature Protection
10.1.1.6
Adding RC Filters to the Sense Resistor
10.1.1.7
Using the State Comparator in an Application
10.1.1.7.1
Examples
10.2
Typical Application
10.2.1
Design Requirements
10.2.2
Detailed Design Procedure
10.2.2.1
Design Example
10.2.3
Application Curves
11
Power Supply Recommendations
12
Layout
12.1
Layout Guidelines
12.2
Layout Example
13
Device and Documentation Support
13.1
第三方产品免责声明
13.2
Documentation Support
13.2.1
Related Documentation
13.3
接收文档更新通知
13.4
支持资源
13.5
Trademarks
13.6
静电放电警告
13.7
术语表
14
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
PW|24
MPDS363A
散热焊盘机械数据 (封装 | 引脚)
订购信息
zhcshu6l_oa
zhcshu6l_pm
1
特性
超低静态电流:8 µA 典型值(正常模式),2 µA(休眠模式)
整套电压、电流和温度保护功能
智能电池被动平衡功能可消除电池间的不平衡
可将电池节数从 3 节扩展到 20 节或更多
电压保护(过压精度为 ±10mV,欠压精度为 ±18mV)
过压:3V 至 4.575V
欠压:1.2V 至 3V
开路电池和断线检测 (OW)
电流保护
过流放电 1:-10mV 至 -85mV
过流放电 2:-20mV 至 -170 mV
短路放电:-40mV 至 -340 mV
温度保护
过热充电:45°C 至 50°C
过热放电:65°C 至 70°C
其他特性:
独立充电 (CHG) 和放电 (DSG) FET 驱动器
通过集成式 FET(平衡电流高达 50mA)实现了智能电池平衡算法,此外还支持通过外部 FET 实现更高的电池平衡电流
超低功耗休眠模式
每节电池输入的绝对最大额定电压高达 36V
过流 (OCD1/2) 延迟可通过电阻器进行编程
关断模式:0.5 µA(最大值)
提供功能安全
有助于进行功能安全系统设计的文档