OUT

IN

GND

FAULT

ILIM

EN

R

ILIM

20 kW

R

FAULT

100 kW

Control Signal

5V USB

Input

USB

Port

USB Data

TPS2552/53

0.1 F

m

120 F

m

Fault Signal

Power Pad

USB requirement only*

*

facing ports are bypassed with at least

120 F per hub

USB requirement that downstream

m

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Design

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

TPS2552, TPS2553, TPS2552-1, TPS2553-1

SLVS841F – NOVEMBER 2008 – REVISED AUGUST 2016

TPS255xx Precision Adjustable Current-Limited Power-Distribution Switches

1

1 Features

1

•

Up to 1.5-A Maximum Load Current

•

±6% Current-Limit Accuracy at 1.7 A (Typical)

•

Meets USB Current-Limiting Requirements

•

Backwards Compatible With TPS2550 and

TPS2551

•

Adjustable Current Limit: 75 mA to 1700 mA

(Typical)

•

Constant-Current (TPS255x) and Latch-Off

(TPS255x-1) Versions

•

Fast Overcurrent Response - 2 µs (Typical)

•

85-mΩ High-Side MOSFET (DBV Package)

•

Reverse Input-Output Voltage Protection

•

Operating Range: 2.5 V to 6.5 V

•

Built-In Soft Start

•

15-kV ESD Protection per IEC 61000-4-2 (With

External Capacitance)

•

UL Listed – File No. E169910 and NEMKO

IEC60950-1-am1 ed2.0

•

See the TI Switch Portfolio

2 Applications

•

USB Ports and Hubs

•

Digital TVs

•

Set-Top Boxes

•

VOIP Phones

3 Description

The TPS255x and TPS255x-1 power-distribution

switches

are

intended

for

applications

where

precision

current

limiting

is

required

or

heavy

capacitive loads and short circuits are encountered

and provide up to 1.5 A of continuous load current.

These devices offer a programmable current-limit

threshold between 75 mA and 1.7 A (typical) through

an external resistor. Current-limit accuracy as tight as

±6% can be achieved at the higher current-limit

settings. The power-switch rise and fall times are

controlled to minimize current surges during turnon

and turnoff.

TPS255x devices limit the output current to a safe

level by using a constant-current mode when the

output load exceeds the current-limit threshold.

TPS255x-1

devices

provide

circuit

breaker

functionality by latching off the power switch during

overcurrent or reverse-voltage situations. An internal

reverse-voltage

comparator

disables

the

power-

switch when the output voltage is driven higher than

the input to protect devices on the input side of the

switch.

The

FAULT

output

asserts

low

during

overcurrent and reverse-voltage conditions.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

TPS2552

SOT-23 (6)

2.90 mm x 1.60 mm

WSON (6)

2.00 mm x 2.00 mm

TPS2553

SOT-23 (6)

2.90 mm x 1.60 mm

WSON (6)

2.00 mm x 2.00 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Typical Application