Datasheet > TPS22985YFPR

TPS22985YFPR

更新时间： 2024-11-14 11:44:35

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
20页	391K
描述
Thunderbolt? SUPPLY SELECTION IC

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TPS22985YFPR 数据手册

TPS22985

www.ti.com

SLVSBA9B –MARCH 2012–REVISED JUNE 2012

Thunderbolt™ SUPPLY SELECTION IC

Check for Samples: TPS22985

FEATURES

DESCRIPTION

•

2.8 V to 19.8 V

The TPS22985 is a supply selection device for active

Thunderbolt™ cables. The device selects a supply

that is at 3.3V from two supply inputs and connects

this to two non-current limited outputs OUTA and

OUTB. When 3.3V is not present at either supply, the

outputs become high impedance.

Auto Selects 3.3 V Supply

> 10-mA Low Power Switch

> 500-mA High Power Switch

Reverse Current Blocking From OUT to VDD

Wake on UART Input Activity

UART RX and TX Buffers

The TPS22985 has two modes of operation, Normal

and Control.

In Normal Mode, OUTA is always on when a valid

supply is present. OUTB is connected to a valid VDD

when the ENB input is high.

APPLICATIONS

•

Thunderbolt™ Cables

Notebook Computers

Desktop Computers

In Control Mode, OUTA functions the same as

Normal Mode and OUTB is controlled by

combination of monitored inputs and valid supplies on

VDD1 and VDD2. When a valid VDD is available, the

device waits for a rising input on ENB and then

disconnects OUTB until the next falling RXH

transition. Once the next falling RXH transition

occurs, the device reconnects OUTB.

Power Management Systems

VDD1

VDD2

In either mode, when a valid VDD is not available, the

TPS22985 opens all switches and the outputs OUTA

and OUTB become high impedance. When the

connected VDD exceeds a maximum voltage of 3.6V,

it is disconnected from the outputs. VDD2 will only

connect when it is in the valid range and VDD1 is

greater than 3.6V

Charge

Pump

CPO

RESETZ

FET 1

FET 3

Logic

Core

ENB

FET 4

CFG/OE

FET 2

The TPS22985 is available in a 1.6mm x 1.6mm

WCSP package.

Level

Shifter

RXH

RXC

TXC

Level

Shifter

TXH

CFG2 (Thunderbolt^TM

)

Cable uC and CDR Retimier

Figure 1. Typical Application

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

Thunderbolt is a trademark of Intel Corporation.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...20

中文翻译

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TPS22985YFPR 替代型号

型号	品牌	替代类型	描述	数据表
TPS22985YFP	TI	完全替代	Thunderbolt? SUPPLY SELECTION IC

与TPS22985YFPR相关器件

型号	品牌	获取价格	描述	数据表
TPS22986	TI	获取价格	Thunderbolt Supply Selection IC
TPS22986YFPR	TI	获取价格	Thunderbolt Supply Selection IC
TPS22990	TI	获取价格	具有可调节上升时间、电源正常指示和可选输出放电功能的 5.5V、10A、3.9mΩ 负载开
TPS22990DMLR	TI	获取价格	具有可调节上升时间、电源正常指示和可选输出放电功能的 5.5V、10A、3.9mΩ 负载开
TPS22990DMLT	TI	获取价格	具有可调节上升时间、电源正常指示和可选输出放电功能的 5.5V、10A、3.9mΩ 负载开
TPS22990NDMLR	TI	获取价格	具有可调节上升时间、电源正常指示和可选输出放电功能的 5.5V、10A、3.9mΩ 负载开
TPS22990NDMLT	TI	获取价格	具有可调节上升时间、电源正常指示和可选输出放电功能的 5.5V、10A、3.9mΩ 负载开
TPS22992	TI	获取价格	具有可调节上升时间和可调节快速输出放电功能的 5.5V、6A、8.7mΩ 负载
TPS22992RXPR	TI	获取价格	具有可调节上升时间和可调节快速输出放电功能的 5.5V、6A、8.7mΩ
TPS22992SRXNR	TI	获取价格	具有可调节上升时间和可调节快速输出放电功能的 5.5V、6A、8.7mΩ

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