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UCC3981DWP PDF预览

UCC3981DWP

更新时间: 2024-11-27 12:22:35
品牌 Logo 应用领域
德州仪器 - TI 电源电路电源管理电路光电二极管信息通信管理控制器
页数 文件大小 规格书
5页 172K
描述
Universal Serial Bus Hot Swap Power Controller

UCC3981DWP 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Obsolete零件包装代码:SOIC
包装说明:POWER, PLASTIC, SOIC-28针数:28
Reach Compliance Code:not_compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.92
Is Samacsys:N可调阈值:NO
模拟集成电路 - 其他类型:POWER SUPPLY SUPPORT CIRCUITJESD-30 代码:R-PDSO-G28
长度:17.905 mm信道数量:1
功能数量:1端子数量:28
最高工作温度:125 °C最低工作温度:
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装等效代码:SOP28,.4封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):NOT SPECIFIED
电源:4.5/8.0 V认证状态:Not Qualified
座面最大高度:2.64 mm子类别:Power Management Circuits
最大供电电压 (Vsup):9 V最小供电电压 (Vsup):4.5 V
标称供电电压 (Vsup):5 V表面贴装:YES
技术:BICMOS温度等级:OTHER
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:7.5 mmBase Number Matches:1

UCC3981DWP 数据手册

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UCC3981  
PRELIMINARY  
Universal Serial Bus Hot Swap Power Controller  
FEATURES  
DESCRIPTION  
Fully USB Compliant  
The UCC3981 Hot Swap Power Controller is designed to provide a self  
powered USB hub with a local 3.3V regulated voltage and four 5V regu-  
lated voltages for USB ports. Each of the 5V output ports is individually  
enabled for optimal port control. Each port also provides an overcurrent  
fault signal indicating that the port has exceeded a 500mA current limit.  
The 3.3V linear regulator is used to power the local USB microcontroller.  
This regulator is protected with a 100mA current limit and has a logic  
level enable input.  
Support Four 5V Peripherals and One  
USB 3.3V Controller  
Separate Power Enables  
500mA Current Limiting per Channel  
Separate Open Drain Fault Indicator  
for Each Channel  
The UCC3981 can be configured to provide USB port power from a  
loosely regulated voltage such as a Filament voltage internal to a monitor.  
Pre-regulation is provided by an internal linear regulator controller and  
one external logic level N-channel MOSFET. The UCC3981 can also be  
configured without using the pre-regulator stage by connecting the VREG  
pins to a regulated 5.5V 2A source.  
3.3V Output for USB Controller  
Available in 28 Pin Wide Surface  
Mount and DIP  
The UCC3981 comes in a 28-pin wide SOIC power package optimized  
for power dissipation, and is protected by internal over-temperature shut-  
down mechanism, which disables the outputs should the internal junction  
temperature exceed 150°C.  
APPLICATION AND BLOCK DIAGRAM  
UCC3981 USB HUB POWER CONTROLLER  
UDG-97101  
11/98  

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