TPS2556

更新时间： 2024-11-20 11:58:27

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	1000K
描述
PRECISION ADJUSTABLE CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

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TPS2556 数据手册

TPS2556

TPS2557

www.ti.com

SLVS931A –NOVEMBER 2009–REVISED FEBRUARY 2012

PRECISION ADJUSTABLE CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

Check for Samples: TPS2556, TPS2557

FEATURES

APPLICATIONS

•

Meets USB Current-Limiting Requirements

Adjustable Current Limit, 500 mA–5 A (typ)

+/- 6.5% Current-Limit Accuracy at 4.5 A

Fast Overcurrent Response - 3.5-μS (typ)

22-mΩ High-Side MOSFET

•

USB Ports/Hubs

Digital TV

•

Set-Top Boxes

VOIP Phones

DESCRIPTION

Operating Range: 2.5 V to 6.5 V

2-μA Maximum Standby Supply Current

Built-in Soft-Start

The TPS2556/57 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 5.0 A (typ) via an external resistor. The

power-switch rise and fall times are controlled to

minimize current surges during turn on/off.

15 kV / 8 kV System-Level ESD Capable

UL Listed* – File No. E169910

CB & Nemko Certification*

*R_ILIM≥ 24.9 kΩ (5A maximum)

TPS2556/57 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.

TPS2556/57

DRB PACKAGE

(TOP VIEW)

TPS2556/57

0.1 uF

2.5V – 6.5V

VOUT

OUT

R_FAULT

100 kΩ

GND

FAULT

OUT

PAD

R_ILIM

C_LOAD

ILIM

Fault Signal

Control Signal

FAULT

ILIM

GND

EN = Active Low for the TPS2556

EN = Active High for the TPS2557

Power Pad

Figure 1. Typical Application as USB Power Switch

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TPS2556相关器件

型号	品牌	获取价格	描述	数据表
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
TPS2556QDRB	TI	获取价格	暂无描述
TPS2556QDRBRQ1	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
TPS2556QDRBTQ1	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
TPS2557	TI	获取价格	高电平有效的 0.5-5A 可调节 ILIMIT、2.5-6.5V、22mΩ USB 电源
TPS2557DRB	TI	获取价格	1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8, PLASTIC, SON-8
TPS2557DRBR	TI	获取价格	PRECISION ADJUSTABLE CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

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