TPS2554

更新时间： 2024-11-20 08:39:27

品牌	Logo	应用领域
德州仪器 - TI		开关
页数	文件大小	规格书
23页	1039K
描述
Precision Adjustable Current-Limited, Power-Distribution Switches

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TPS2554 数据手册

TPS2554

TPS2555

www.ti.com

SLVSAM0 –JUNE 2011

Precision Adjustable Current-Limited, Power-Distribution Switches

Check for Samples: TPS2554, TPS2555

FEATURES

APPLICATIONS

•

Meets USB Current-Limiting Requirements

Adjustable Current Limit, 500 mA to 2.5 A (typ)

Two Independently-Settable, Current-Limit

Thresholds

•

USB Ports/Hubs

Digital TV

Set-Top Boxes

VOIP Phones

•

Fast Overcurrent Response - 1.5 μs (typ)

73-mΩ High-Side MOSFET

3.8-μA Maximum Standby Supply Current

PowerPAD™ Thermal Management

Automatic Output Discharge when Disabled

DESCRIPTION

The TPS2554/55 power-distribution switches are

intended for applications where precision current

limiting is required or heavy capacitive loads and

short circuits are encountered. These devices offer a

programmable current-limit threshold between 500

mA and 2.5 A (typ) via an external resistor.

Both High-Enable (TPS2554) and Low-Enable

(TPS2555) Versions Available

TPS2554/55 devices limit the output current to a safe

level by switching into a constant-current mode when

the output load exceeds the current-limit threshold.

The FAULT logic output asserts low during

overcurrent and over-temperature conditions.

TPS2554/55 DRC Package and Typical Application Diagram

TPS2554/TPS2555

DRC PACKAGE

(TOP VIEW)

TPS2554/55

4.5 V to 5.5 V

VBUS

120 mF

2/3 IN

OUT 8/9

100 nF

R_FAULT

GND 1

10 FAULT

Current Limit

Select

ILIM_SEL

FAULT Signal

OUT

10 FAULT

ILIM0

ILIM1

PAD

2x R_ILIMx

Power Switch

Enable

EN/EN

ILIM_SEL 4

7 ILIM0

6 ILIM1

Power

PAD

GND

EN/EN

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.

PowerPAD is a trademark of Texas Instruments.

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...23

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与TPS2554相关器件

型号	品牌	获取价格	描述	数据表
TPS2554DRCR	TI	获取价格	Precision Adjustable Current-Limited, Power-Distribution Switches
TPS2554DRCT	TI	获取价格	Precision Adjustable Current-Limited, Power-Distribution Switches
TPS2555	TI	获取价格	低电平有效的 0.5-2.5A 可调节、2 个可设置 ILIMIT、4.5-5.5V、73
TPS2555DRCR	TI	获取价格	Precision Adjustable Current-Limited, Power-Distribution Switches
TPS2555DRCT	TI	获取价格	Precision Adjustable Current-Limited, Power-Distribution Switches
TPS2556	TI	获取价格	PRECISION ADJUSTABLE CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES
TPS2556DRB	TI	获取价格	IC 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, PLASTIC, SON-8, Power Management Circuit
TPS2556DRBR	TI	获取价格	PRECISION ADJUSTABLE CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES
TPS2556DRBT	TI	获取价格	PRECISION ADJUSTABLE CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES
TPS2556-Q1	TI	获取价格	低电平有效的汽车类 0.5-5A 可调节 ILIMIT 2.5-6.5V、22mΩ USB

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