1

2

3

4

5

6

OUT

FAULT

ILIM

EN

GND

IN

PAD

1

2

3

4

5

6

OUT

FAULT

ILIM

EN

GND

IN

TPS2553-Q1

DBV PACKAGE

(TOP VIEW)

EN = Active Low for the TPS2553-Q1

EN = Active High for the TPS2553-Q1

Add -1 to part number for lach-off version

OUT

IN

GND

FAULT

ILIM

EN

R

ILIM

20 kW

R

FAULT

100 kW

Control Signal

5V USB

Input

USB

Port

USB Data

TPS

2553-Q1

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

TPS2553-Q1

DRV PACKAGE

(TOP VIEW)

TPS2553-Q1

www.ti.com

SLVSBD0 – NOVEMBER 2012

PRECISION ADJUSTABLE CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES

Check for Samples: TPS2553-Q1

1

FEATURES

•

Fast Overcurrent Response - 2-

μs (typ)

•

85-m

Ω High-Side MOSFET (DBV Package)

2

•

Qualified for Automotive Applications

•

Reverse Input-Output Voltage Protection

•

AEC-Q100 Qualified With the Following

Results:

•

Operating Range: 2.5 V to 6.5 V

–

Device Temperature Grade 1: –40°C to

•

Built-in Soft-Start

125°C Ambient Operating Temperature

•

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

Range

External Capacitance)

–

Device HBM ESD Classification Level H2

•

UL Listed – File No. E169910 and NEMKO

–

Device CDM ESD Classification Level C3B

IEC60950-1-am1 ed2.0

•

Up to 1.5 A Maximum Load Current

•

See the TI Switch Portfolio

•

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

APPLICATIONS

•

Meets USB Current-Limiting Requirements

•

Automotive

•

Backwards Compatible with TPS2550/51

•

Power Distribution

•

Adjustable current-limit, 75 mA–1300 mA (typ)

•

Current Limiting

•

Constant-Current (TPS2553-Q1)

DESCRIPTION

The TPS2553-Q1 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 (typ) via 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 turn on/off.

TPS2553-Q1 devices limit the output current to a safe level by using a constant-current mode when the output

load exceeds the current-limit threshold. 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.

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.

2

PowerPAD is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 2012, 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.