UCC3981

更新时间： 2024-11-10 12:22:35

品牌	Logo	应用领域
德州仪器 - TI		控制器
页数	文件大小	规格书
5页	172K
描述
Universal Serial Bus Hot Swap Power Controller

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UCC3981 数据手册

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

12 3 4 5

中文翻译

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与UCC3981相关器件

型号	品牌	获取价格	描述	数据表
UCC39811	TI	获取价格	Universal Serial Bus Hot Swap Power Controller
UCC3981DWP	TI	获取价格	Universal Serial Bus Hot Swap Power Controller
UCC3981J	TI	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, CDIP28, 0.600 INCH, CERAMIC, DIP-28
UCC3981N	TI	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP28, 0.600 INCH, PLASTIC, DIP-28
UCC3985DW	TI	获取价格	4-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO24, 300 INCH, PLASTIC, SOIC-24
UCC3995D	TI	获取价格	1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO8, 0.150 INCH, PLASTIC, SOIC-8
UCC3996D	TI	获取价格	2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO16, 0.150 INCH, PLASTIC, SOIC-16
UCC3996DW	TI	获取价格	2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO16, 0.300 INCH, PLASTIC, SOIC-16
UCC3996N	TI	获取价格	2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDIP16, PLASTIC, DIP-16
UCC40501	UTC	获取价格	40v, 5a synchronous buck converter with 2ch cc/cv