ZHCSF60K
June 2016 – July 2020
BQ77904
,
BQ77905
PRODUCTION DATA
1
特性
2
应用
3
说明
4
Revision History
5
Device Comparison
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
8.1.1
Device Functionality Summary
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Protection Summary
8.3.2
Fault Operation
8.3.2.1
Operation in OV
8.3.2.2
Operation in UV
8.3.2.3
Operation in OW
8.3.2.4
Operation in OCD1
8.3.2.5
Operation in OCD2
8.3.2.6
Operation in SCD
8.3.2.7
Overcurrent Recovery Timer
8.3.2.8
Load Removal Detection
8.3.2.9
Load Removal Detection in UV
8.3.2.10
Operation in OTC
8.3.2.11
Operation in OTD
8.3.2.12
Operation in UTC
8.3.2.13
Operation in UTD
8.3.3
Protection Response and Recovery Summary
8.3.4
Configuration CRC Check and Comparator Built-In-Self-Test
8.3.5
Fault Detection Method
8.3.5.1
Filtered Fault Detection
8.3.6
State Comparator
8.3.7
DSG FET Driver Operation
8.3.8
CHG FET Driver Operation
8.3.9
External Override of CHG and DSG Drivers
8.3.10
Configuring 3-S, 4-S, or 5-S Mode
8.3.11
Stacking Implementations
8.3.12
Zero-Volt Battery Charging Inhibition
8.4
Device Functional Modes
8.4.1
Power Modes
8.4.1.1
Power-On Reset (POR)
8.4.1.2
FAULT Mode
8.4.1.3
SHUTDOWN Mode
8.4.1.4
Customer Fast Production Test Modes
9
Application and Implementation
9.1
Application Information
9.1.1
Recommended System Implementation
9.1.1.1
CHG and DSG FET Rise and Fall Time
9.1.1.2
Protecting CHG and LD
9.1.1.3
Protecting CHG FET
9.1.1.4
Using Load Detect for UV Fault Recovery
9.1.1.5
Temperature Protection
9.1.1.6
Adding Filter to Sense Resistor
9.1.1.7
Using a State Comparator in an Application
9.1.1.7.1
Examples
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Design Example
9.2.3
Application Curves
9.3
System Examples
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
Device and Documentation Support
12.1
Documentation Support
12.1.1
Related Links
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
封装选项
机械数据 (封装 | 引脚)
PW|20
MPDS362A
散热焊盘机械数据 (封装 | 引脚)
订购信息
zhcsf60k_oa
zhcsf60k_pm
1
特性
正常模式:6µA(bQ77904 和 bQ77905)
整套电压、电流和温度保护功能
电池节数可扩展,支持从 3 节串联到 20 节或更多节数串联
电压保护(精度为 ±10mV)
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 +170mV
短路放电:-40mV 至 +340mV
整个温度范围内,电压 ≤ 20mV 时的精度为 ±20%,电压 > 20mV 时的精度为 ±30%
温度保护
过热充电:45°C 至 50°C
过热放电:65°C 至 70°C
欠温充电:-5°C 至 0°C
低温放电:-20°C 或 -10°C
附加特性
独立充电 (CHG) 和放电 (DSG) FET 驱动器
每节电池输入的绝对最大额定电压为 36V
内置自检功能,实现高可靠性
关断模式:0.5µA(最大值)
提供功能安全
可帮助进行功能安全系统设计的文档