ZHCSNP0A
august 2020 – march 2021
BQ25171-Q1
PRODUCTION DATA
1
1
特性
2
应用
3
说明
4
Revision History
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
6.5
Electrical Characteristics
6.6
Timing Requirements
6.7
典型特性
7
Detailed Description
7.1
Overview
7.2
Functional Block Diagram
7.3
Feature Description
7.3.1
Device Power Up from Input Source
7.3.1.1
ISET Pin Detection
7.3.1.2
CHM_TMR Pin Detection
7.3.1.3
VSET Pin Detection
7.3.1.4
Charger Power Up
7.3.2
Battery Charging Features
7.3.2.1
Lithium-Ion Battery Charging Profile
7.3.2.1.1
NiMH Battery Charging Profile
7.3.2.2
Charge Termination and Battery Recharge
7.3.2.3
Charging Safety Timers
7.3.2.4
Battery Cold, Hot Temperature Qualification (TS Pin)
7.3.3
Status Outputs (STAT1, STAT2)
7.3.3.1
Charging Status Indicator (STAT1, STAT2)
7.3.4
Protection Features
7.3.4.1
Input Overvoltage Protection (VIN OVP)
7.3.4.2
Output Overvoltage Protection (BAT OVP)
7.3.4.3
Output Overcurrent Protection (BAT OCP)
7.3.4.4
Thermal Regulation and Thermal Shutdown (TREG and TSHUT)
7.4
Device Functional Modes
7.4.1
Shutdown or Undervoltage Lockout (UVLO)
7.4.2
Sleep Mode
7.4.3
Active Mode
7.4.3.1
Standby Mode
7.4.4
Fault Mode
8
Application and Implementation
8.1
Application Information
8.2
Typical Applications
8.2.1
1s LiFePO4 Charger Design Example
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.2.1
Program the Fast Charge Current, ISET:
8.2.1.2.2
TS Function
8.2.1.3
Application Curves
8.2.2
2s Li-Ion Charger with Power Path Design Example
8.2.2.1
Design Requirements
8.2.3
4s NiMH Charger Design Example
8.2.3.1
Design Requirements
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
11
Device and Documentation Support
11.1
Device Support
11.1.1
第三方产品免责声明
11.2
Receiving Notification of Documentation Updates
11.3
支持资源
11.4
Trademarks
11.5
静电放电警告
11.6
术语表
12
Mechanical, Packaging, and Orderable Information
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)
DRC|10
散热焊盘机械数据 (封装 | 引脚)
11.5
静电放电警告
静电放电 (ESD) 会损坏这个集成电路。德州仪器 (TI) 建议通过适当的预防措施处理所有集成电路。如果不遵守正确的处理和安装程序,可能会损坏集成电路。
ESD 的损坏小至导致微小的性能降级,大至整个器件故障。精密的集成电路可能更容易受到损坏,这是因为非常细微的参数更改都可能会导致器件与其发布的规格不相符。