ZHCSKO6B
July 2010 – January 2020
BQ24650
PRODUCTION DATA.
1
特性
2
应用
3
说明
Device Images
典型应用
4
修订历史记录
5
说明 (续)
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
Typical Characteristics
8
Detailed Description
8.1
Overview
8.2
Functional Block Diagram
8.3
Feature Description
8.3.1
Battery Voltage Regulation
8.3.2
Input Voltage Regulation
8.3.3
Battery Current Regulation
8.3.4
Battery Precharge
8.3.5
Charge Termination and Recharge
8.3.6
Power Up
8.3.7
Enable and Disable Charging
8.3.8
Automatic Internal Soft-Start Charger Current
8.3.9
Converter Operation
8.3.10
Synchronous and Non-Synchronous Operation
8.3.11
Cycle-by-Cycle Charge Undercurrent
8.3.12
Input Overvoltage Protection (ACOV)
8.3.13
Input Undervoltage Lockout (UVLO)
8.3.14
Battery Overvoltage Protection
8.3.15
Cycle-by-Cycle Charge Overcurrent Protection
8.3.16
Thermal Shutdown Protection
8.3.17
Temperature Qualification
8.3.18
Charge Enable
8.3.19
Inductor, Capacitor, and Sense Resistor Selection Guidelines
8.3.20
Charge Status Outputs
8.3.21
Battery Detection
8.3.21.1
Example
8.4
Device Functional Modes
8.4.1
Converter Operation
8.4.2
Synchronous and Non-Synchronous Operation
9
Application and Implementation
9.1
Application Information
9.2
Typical Application
9.2.1
Design Requirements
9.2.2
Detailed Design Procedure
9.2.2.1
Inductor Selection
9.2.2.2
Input Capacitor
9.2.2.3
Output Capacitor
9.2.2.4
Power MOSFETs Selection
9.2.2.5
Input Filter Design
9.2.2.6
MPPT Temperature Compensation
9.2.3
Application Curves
10
Power Supply Recommendations
11
Layout
11.1
Layout Guidelines
11.2
Layout Example
12
器件和文档支持
12.1
器件支持
12.1.1
第三方产品免责声明
12.2
接收文档更新通知
12.3
支持资源
12.4
商标
12.5
静电放电警告
12.6
Glossary
13
机械、封装和可订购信息
1
特性
通过输入电压调节实现最大功率点跟踪 (MPPT) 功能
可编程 MPPT 设置
5V 至 28V 输入太阳能电池板
600kHz NMOS-NMOS 同步降压控制器
电阻可编程浮充电压
适用于锂离子/聚合物、磷酸铁锂、铅酸化学电池
精度
±0.5% 充电电压调节
±3% 充电电流调节
±0.6% 输入电压调节
高集成度
内部环路补偿
内部数字软启动
安全
输入过压保护
电池温度感应
电池欠电检测
热关断保护
针对 LED 或主机处理器的充电状态输出
MPPSET 充电使能引脚
自动休眠模式,可降低功耗
关闭状态电池放电电流 < 15μA
小型 3.5 × 3.5mm
2
、16 引脚 QFN 封装