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TPS2552 Datasheet Preview

TPS2552 Datasheet

Precision Adjustable Current-Limited Power-Distribution Switches

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TPS2552, TPS2553, TPS2552-1, TPS2553-1
SLVS841F – NOVEMBER 2008 – REVISED AUGUST 2016
TPS255xx Precision Adjustable Current-Limited Power-Distribution Switches
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
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.
2 Applications
• USB Ports and Hubs
• Digital TVs
• Set-Top Boxes
• VOIP Phones
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS2552
SOT-23 (6)
WSON (6)
2.90 mm x 1.60 mm
2.00 mm x 2.00 mm
TPS2553
SOT-23 (6)
WSON (6)
2.90 mm x 1.60 mm
2.00 mm x 2.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
5V USB
Input
RFAULT
100 kW
Fault Signal
Control Signal
Typical Application
TPS2552/53
0.1 mF
IN
OUT
USB Data
USB
Port
FAULT
EN
ILIM
GND
Power Pad
120 mF
RILIM
20 kW
USB requirement only*
*USB requirement that downstream
facing ports are bypassed with at least
120 mF per hub
Copyright © 2016, Texas Instruments Incorporated
1
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.




etcTI

TPS2552 Datasheet Preview

TPS2552 Datasheet

Precision Adjustable Current-Limited Power-Distribution Switches

No Preview Available !

TPS2552, TPS2553, TPS2552-1, TPS2553-1
SLVS841F – NOVEMBER 2008 – REVISED AUGUST 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Table..................................... 4
6 Pin Configuration and Functions ......................... 5
7 Specifications......................................................... 5
7.1 Absolute Maximum Ratings ...................................... 5
7.2 ESD Ratings ............................................................ 6
7.3 Recommended Operating Conditions....................... 6
7.4 Thermal Information .................................................. 6
7.5 Electrical Characteristics........................................... 7
7.6 Typical Characteristics .............................................. 8
8 Parameter Measurement Information ................ 11
9 Detailed Description ............................................ 13
9.1 Overview ................................................................. 13
9.2 Functional Block Diagram ....................................... 13
9.3 Feature Description................................................. 13
9.4 Device Functional Modes........................................ 15
9.5 Programming........................................................... 15
10 Application and Implementation........................ 17
10.1 Application Information.......................................... 17
10.2 Typical Applications .............................................. 17
11 Power Supply Recommendations ..................... 24
11.1 Self-Powered and Bus-Powered Hubs ................. 24
11.2 Low-Power Bus-Powered and High-Power Bus-
Powered Functions .................................................. 24
11.3 Power Dissipation and Junction Temperature ...... 24
12 Layout................................................................... 25
12.1 Layout Guidelines ................................................. 25
12.2 Layout Example .................................................... 25
13 Device and Documentation Support ................. 26
13.1 Device Support...................................................... 26
13.2 Related Links ........................................................ 26
13.3 Receiving Notification of Documentation Updates 26
13.4 Community Resources.......................................... 26
13.5 Trademarks ........................................................... 26
13.6 Electrostatic Discharge Caution ............................ 26
13.7 Glossary ................................................................ 26
14 Mechanical, Packaging, and Orderable
Information ........................................................... 26
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision E (February 2012) to Revision F
Page
• Added ESD Rating table, Feature Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section ................................................................................................. 1
• Changed 1300 mA to 1700 mA in the adjustable current limit bullet under the Features section ......................................... 1
• Changed from 1.2 A to 1.5 A.................................................................................................................................................. 4
Changes from Revision D (June 2011) to Revision E
Page
• Changed VEN to VEN in Recommended Operating Conditions ............................................................................................... 6
• Changed VEN to VEN in Recommended Operating Conditions ............................................................................................... 6
Changes from Revision C (September 2009) to Revision D
Page
• Changed From: Fast Overcurrent Response - 2-µS (typ) To: Fast Overcurrent Response - 2-µs (typ) in the Features ...... 1
• Added text To Feature - UL Listed "and NEMKO IEC60950-1-am1 ed2.0"........................................................................... 1
• Added Features Item "See the TI Switch Portfoilo"................................................................................................................ 1
• Changed the DEVICE INFORMATION table, and Deleted Note 3 ........................................................................................ 1
• Added ESD-system level (contact/air) to the ABS MAX table, and Added Note 3 ................................................................ 6
• Added text to the REVERSE-VOLTAGE PROTECTION section: "A reverse.....when this occurs.".................................... 14
2
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Copyright © 2008–2016, Texas Instruments Incorporated
Product Folder Links: TPS2552 TPS2553 TPS2552-1 TPS2553-1


Part Number TPS2552
Description Precision Adjustable Current-Limited Power-Distribution Switches
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