ZHCSKL0D
December 2009 – December 2019
BQ24610
,
BQ24617
PRODUCTION DATA.
1
特性
2
应用
3
说明
Device Images
简化原理图
4
修订历史记录
5
说明 (续)
6
Device Comparison Table
7
Pin Configuration and Functions
Pin 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
9.2
Functional Block Diagram
9.3
Feature Description
9.3.1
Battery Voltage Regulation
9.3.2
Battery Current Regulation
9.3.3
Input Adapter Current Regulation
9.3.4
Precharge
9.3.5
Charge Termination, Recharge, and Safety Timer
9.3.6
Power Up
9.3.7
Enable and Disable Charging
9.3.8
System Power Selector
9.3.9
Automatic Internal Soft-Start Charger Current
9.3.10
Converter Operation
9.3.11
Synchronous and Nonsynchronous Operation
9.3.12
Cycle-by-Cycle Charge Undercurrent Protection
9.3.13
Input Overvoltage Protection (ACOV)
9.3.14
Input Undervoltage Lockout (UVLO)
9.3.15
Battery Overvoltage Protection
9.3.16
Cycle-by-Cycle Charge Overcurrent Protection
9.3.17
Thermal Shutdown Protection
9.3.18
Temperature Qualification
9.3.19
Timer Fault Recovery
9.3.20
PG Output
9.3.21
CE (Charge Enable)
9.3.22
Charge Status Outputs
9.3.23
Battery Detection
9.4
Device Functional Modes
10
Application and Implementation
10.1
Application Information
10.2
Typical Applications
10.2.1
System with Power Path
10.2.1.1
Design Requirements
10.2.1.2
Detailed Design Procedure
10.2.1.2.1
Inductor Selection
10.2.1.2.2
Input Capacitor
10.2.1.2.3
Output Capacitor
10.2.1.2.4
Power MOSFETs Selection
10.2.1.2.5
Input Filter Design
10.2.1.2.6
Inductor, Capacitor, and Sense Resistor Selection Guidelines
10.2.1.3
Application Curves
10.2.2
Simplified System without Power Path or DPM
10.2.2.1
Design Requirements
10.2.2.2
Detailed Design Procedure
10.2.2.3
Application Curves
10.2.3
Lead-Acid Charging System
10.2.3.1
Design Requirements
10.2.3.2
Detailed Design Procedure
10.2.3.3
Application Curves
11
Power Supply Recommendations
12
Layout
12.1
Layout Guidelines
12.2
Layout Example
13
器件和文档支持
13.1
器件支持
13.1.1
第三方产品免责声明
13.2
相关链接
13.3
接收文档更新通知
13.4
支持资源
13.5
商标
13.6
静电放电警告
13.7
Glossary
14
机械、封装和可订购信息
1
特性
600kHz NMOS-NMOS 同步降压转换器
适用于锂离子或锂聚合物电池的独立充电器
工作输入范围为 5V 至 28V VCC,支持 1 节至 6 节电池 (BQ24610)
工作输入范围为 5V 至 24V VCC,支持 1 节至 5 节电池 (BQ24617)
充电电流和适配器电流高达 10A
高精度电压和电流调节
充电电压精度为 ±0.5%
充电电流精度为 ±3%
适配器电流精度为 ±3%
集成
自动选择适配器或电池作为系统电源
非电源路径可选,可降低总 BOM 成本
内部环路补偿和软启动
动态电源管理
安全保护
输入过压保护
电池热敏电阻可感应高温和低温充电暂停
电池检测
FET 提供反向输入保护
可编程安全计时器
充电过流保护
电池短路保护
电池过压保护
热关断保护
状态输出
适配器存在
充电器运行状态
充电使能引脚
适用于同步降压转换器的 6V 栅极驱动
低静态电流 I
q
,通过能源之星认证
关闭状态电池放电电流 < 15µA
关闭状态输入静态电流 < 1.5mA