ZHCSCA8A
March 2014 – April 2019
TPS65286
PRODUCTION DATA.
1
特性
2
应用
3
说明
Device Images
简化原理图
效率
修订历史记录
4
Pin Configuration and Functions
Pin Functions
5
Specifications
5.1
Absolute Maximum Ratings
5.2
ESD Ratings
5.3
Recommended Operating Conditions
5.4
Thermal Information
5.5
Electrical Characteristics
5.6
Typical Characteristics
6
Detailed Description
6.1
Overview
6.2
Functional Block Diagram
6.3
Feature Description
6.3.1
Power Switch
6.3.1.1
Over Current Condition
6.3.1.2
Reverse Current and Voltage Protection
6.3.1.3
nFAULT1/2 Response
6.3.1.4
Under-Voltage Lockout (UVLO)
6.3.1.5
Enable and Output Discharge
6.3.1.6
Power Switch Input and Output Capacitance
6.3.1.7
Programming the Current-Limit Threshold
6.3.2
Buck DCDC Converter
6.3.2.1
Output Voltage
6.3.2.2
Clock Synchronization
6.3.2.3
Error Amplifier
6.3.2.4
Slope Compensation
6.3.2.5
Enable and Adjusting Under-Voltage Lockout
6.3.2.6
Soft-Start Time
6.3.2.7
Internal V7V Regulator
6.3.2.8
Hard Short Circuit Protection
6.3.2.9
Bootstrap Voltage (BST) and Low Dropout Operation
6.3.2.10
Thermal Performance
6.3.2.11
Loop Compensation
6.4
Device Functional Modes
6.4.1
Pulse Skipping Mode Operation
7
Application and Implementation
7.1
Application Information
7.2
Typical Applications
7.2.1
Design Requirements
7.2.2
Detailed Design Procedure
7.2.2.1
Step by Step Design Procedure
7.2.2.2
Related Parts
7.2.2.3
Inductor Selection
7.2.2.4
Output Capacitor Selection
7.2.2.5
Input Capacitor Selection
7.2.2.6
Soft-Start Capacitor Selection
7.2.2.7
Minimum Output Voltage
7.2.2.8
Compensation Component Selection
7.2.2.9
Auto-Retry Functionality of USB Switches
7.2.3
Application Performance Plots
8
Power Supply Recommendations
9
Layout
9.1
Layout Guidelines
9.2
Layout Example
10
器件和文档支持
10.1
器件支持
10.1.1
第三方产品免责声明
10.2
接收文档更新通知
10.3
社区资源
10.4
商标
10.5
静电放电警告
10.6
术语表
11
机械、封装和可订购信息
封装选项
机械数据 (封装 | 引脚)
RHD|28
MPQF133F
散热焊盘机械数据 (封装 | 引脚)
RHD|28
QFND050K
订购信息
zhcsca8a_oa
zhcsca8a_pm
1
特性
集成双配电开关:
工作输入电压范围为 2.5V 至 6V
导通电阻典型值为 100mΩ 的集成背对背功率 MOSFET
可调节电流限制范围为 75mA 至
2.7A
在 1.2A(典型值)时电流限制精度为 ±6%
闭锁过流保护版本
反向输入-输出电压保护
内置软启动
集成降压直流/直流转换器:
4.5V 至 28V 的宽输入电压范围
最大持续输出负载电流为 6A
反馈基准电压为 0.6V ±1%
500kHz 固定开关频率
内置内部软启动时间:1ms
逐周期电流限制
可调节电流限制阈值
输出过压保护
外部时钟同步
过热保护