ZHCSNA1A
april 2020 – february 2021
BQ25968
PRODUCTION DATA
1
1
特性
2
应用
3
说明
4
Revision History
5
说明(续)
6
Device Comparison Table
7
Pin Configuration and 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
Charging System
9.3.2
Battery Charging Profile
9.3.3
Control State Diagram for System Implementation
9.3.4
Device Power Up
9.3.5
Switched Cap Function
9.3.5.1
Theory of Operation
9.3.6
Charging Start-Up
9.3.7
Integrated 16-Bit ADC for Monitoring and Smart Adapter Feedback
9.3.8
Device Internal Thermal Shutdown, TSBUS, and TSBAT Temperature Monitoring
9.3.9
INT Pin, STAT, FLAG, and MASK Registers
9.3.10
CDRVH and CDRVL_ADDRMS Functions
9.3.11
Parallel Operation Using Master and Slave Modes
9.4
Device Functional Modes
9.4.1
Device Modes and Protection Status
9.4.1.1
Input Overvoltage, Overcurrent, Undercurrent and Short-Circuit Protection
9.4.1.2
Battery Overvoltage and Overcurrent Protection
9.4.1.3
Cycle-by-Cycle Current Limit
9.5
Programming
9.5.1
F/S Mode Protocol
9.6
Register Maps
9.6.1
Customer Registers
10
Application and Implementation
10.1
Application Information
10.2
Typical Application
10.2.1
Standalone Application Information (for use with switching charger)
10.2.1.1
Design Requirements
10.2.1.2
Detailed Design Procedure
10.2.1.3
Application Curves
10.2.2
Parallel BQ25968 for Higher Power Applications
10.2.2.1
Design Requirements
10.2.2.2
Detailed Design Procedure
10.2.2.3
Application Curve
11
Power Supply Recommendations
12
Layout
12.1
Layout Guidelines
12.2
Layout Example
13
Device and Documentation Support
13.1
Device Support
13.1.1
第三方产品免责声明
13.1.2
Device Nomenclature
13.2
Documentation Support
13.2.1
Related Documentation
13.3
接收文档更新通知
13.4
支持资源
13.5
Trademarks
13.6
静电放电警告
13.7
术语表
14
Mechanical, Packaging, and Orderable Information
封装选项
机械数据 (封装 | 引脚)
YFF|56
MXBG330
散热焊盘机械数据 (封装 | 引脚)
订购信息
zhcsna1a_oa
1
特性
97% 高效功率级可实现
6A
快速充电
正在申请专利的开关电容充电器架构经过优化,可实现 50% 的占空比
输入电压为电池电压的 2 倍(3.5 V 至 4.65 V)
输出电流为输入电流的 2 倍
(高达 4.5A)
降低电缆的功率损耗
可实现安全运行的集成可编程保护功能
输入过压保护 (BUS_OVP)
具有可调警报的输入过流保护 (BUS_OCP)
使用外部 OVP FET 实现输入过压保护(VAC_OVP 高达 17V)
具有可调警报的电池过压保护 (BAT_OVP)
输出过压保护 (VOUT_OVP)
具有可调警报的输入过流保护 (BUS_OCP)
具有可调警报的 IBAT 过流保护 (BAT_OCP)
开关 MOSFET 逐周期电流限制
电池温度监测
连接器温度监控
用于系统优化的可编程设置
为中断提供了 STAT、FLAG 和 MASK 选项
ADC 读数和配置
集成式
16 位
有效模数转换器 (ADC)
±0.5% 总线电压
±0.5% VOUT 电压
–0.4% 至 0.2% 电池电压(使用差分检测)
±1.5% 电池电流(6A,使用外部 R
SENSE
)
±1% 电池温度
±1% 总线温度
±4°C 裸片温度