ZHCSNR9
November 2021
BQ25173
PRODUCTION DATA
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
Typical Characteristics
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
7.3.2
Supercapacitor Regulation Voltage
7.3.3
Supercapacitor Charging Profile
7.3.4
Status Outputs (PG, STAT)
7.3.4.1
Power Good Indicator (PG Pin)
7.3.4.2
Charging Status Indicator (STAT)
7.3.5
Protection Features
7.3.5.1
Input Overvoltage Protection (VIN OVP)
7.3.5.2
Output Overcurrent Protection (OUT OCP)
7.3.5.3
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 Supercapacitor Charger Design Example
8.2.1.1
Design Requirements
8.2.1.2
Detailed Design Procedure
8.2.1.3
Application Curves
8.2.2
4s Supercapacitor Charger Design Example
8.2.2.1
Design Requirements
8.2.2.2
Application Curves
9
Power Supply Recommendations
10
Layout
10.1
Layout Guidelines
10.2
Layout Example
10.3
Thermal Package
11
Device and Documentation Support
11.1
Device Support
11.1.1
第三方产品免责声明
11.2
接收文档更新通知
11.3
支持资源
11.4
Trademarks
11.5
Electrostatic Discharge Caution
11.6
术语表
12
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
DSG|8
MPDS308C
散热焊盘机械数据 (封装 | 引脚)
DSG|8
QFND141I
订购信息
zhcsnr9_oa
1
特性
可承受高达 40V 的输入电压
自动睡眠模式,可降低功耗
350nA 泄漏电流
禁用充电时,输入泄漏电流为 2µA
支持 1-4 芯超级电容器
支持从 0V 为超级电容器充电
操作可使用外部电阻器进行编程
FB 引脚用于调节超级电容器稳压电压
ISET 用于设置 10mA 至 800mA 的充电电流
高精度
充电电压精度为 ±1%
充电电流精度为 ±10%
充电特性
CE
引脚用于充电功能控制
用于状态和故障指示的开漏输出
用于电源正常指示的开漏输出
集成故障保护
18V 输入过压保护
1000mA 过流保护
125°C 热调节;150°C 热关断保护
OUT 短路保护
ISET 引脚短路/开路保护