1

FEATURES

DESCRIPTION

APPLICATIONS

* USB Requirement that downstream-facing ports

are bypassed with at least 120 F per hub

m

IN

FAULT

EN

OUT

ILIM

GND

PowerPad

USBData

USB

Port

120 F*

m

R

15k

ILIM

W

0.1 F

m

R

100k

FAULT

W

INPUT

5VUSB

FAULT Signal

ControlSignal

TPS2550/51

2

1

3

5

6

4

OUT

EN

GND

ILIM

FAULT

IN

TPS2550/TPS2551

DBVPACKAGE

(TOP VIEW)

TPS2550/TPS2551

DRVPACKAGE

(TOP VIEW)

2

1

3

5

6

4

OUT

EN

GND

ILIM

FAULT

IN

EN= ActiveLowfortheTPS2550

EN= ActiveHighfortheTPS2551

TPS2014600mA

TPS20151 A

TPS2041B500mA

TPS2051B500mA

TPS2045A

250mA

TPS2049100mA

TPS2055A

250mA

TPS20611 A

TPS20651 A

TPS20681.5 A

TPS20691.5 A

TPS2042B500mA

TPS2052B500mA

TPS2046B250mA

TPS2056250mA

TPS20621 A

TPS20661 A

TPS20601.5 A

TPS20641.5 A

TPS2080500mA

TPS2081500mA

TPS2082500mA

TPS2090250mA

TPS2091250mA

TPS2092250mA

TPS2043B500mA

TPS2053B500mA

TPS2047B250mA

TPS2057A

250mA

TPS20631 A

TPS20671 A

TPS2044B500mA

TPS2054B500mA

TPS2048A

250mA

TPS2058250mA

TPS2085500mA

TPS2086500mA

TPS2087500mA

TPS2095250mA

TPS2096250mA

TPS2097250mA

TPS201xA

0.2 A to2 A

TPS202x0.2 A to2 A

TPS203x0.2 A to2 A

GENERAL SWITCHCATALOG

33m ,Single

W

80m ,Single

W

80m ,Dual

W

80m ,Dual

W

80m , Triple

W

80m ,Quad

W

80m ,Quad

W

TPS2550

TPS2551

SLVS736 – FEBRUARY 2008

www.ti.com

ADJUSTABLE CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

• Adjustable Current-Limit, 100 mA–1100 mA

• Fast Overcurrent Response - 2 µS Typical

The

TPS2550/51

power-distribution

switch

is

intended for applications where heavy capacitive

• 85-mΩ High-Side MOSFET (DBV Package)

loads and short-circuits are likely to be encountered,

• Reverse Input-Output Voltage Protection

incorporating a 100-m

Ω, N-channel MOSFET in a

• Operating Range: 2.5 V to 6.5 V

single package. The current-limit threshold is user

adjustable between 100 mA and 1.1 A via an external

• Deglitched Fault Report

resistor. The power-switch rise and fall times are

• 1-µA Maximum Standby Supply Current

controlled

to

minimize

current

surges

during

• Ambient Temperature Range: –40°C to 85°C

switching.

• Built-in Soft-Start

The device limits the output current to a desired level

• 15 kV ESD Protection (with external

by switching into a constant-current mode when the

capacitance)

output load exceeds the current-limit threshold or a

short is present. An internal reverse-voltage detection

comparator disables the power-switch in the event

that the output voltage is driven higher than the input

• USB Ports/Hubs

to protect devices on the input side of the switch. The

• Cell phones

FAULT

logic

output

asserts

low

during

both

• Laptops

overcurrent and reverse-voltage conditions.

• Heavy Capacitive Loads

• Reverse-Voltage Protection

Figure 1. Typical Application as USB Power Switch

1

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.

PRODUCTION DATA information is current as of publication date.

Copyright © 2008, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.