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TPS2553-Q1 Datasheet Preview

TPS2553-Q1 Datasheet

Precision Adjustable Current-Limited Power-Distribution Switches

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TPS2553-Q1
SLVSBD0B – NOVEMBER 2012 – REVISED JUNE 2020
TPS2553-Q1 Precision Adjustable Current-Limited Power-Distribution Switches
1 Features
1 Qualified for Automotive Applications
• AEC-Q100 Qualified With the Following Results:
– Device Temperature Grade 1: –40°C to 125°C
Ambient Operating Temperature Range
– Device HBM ESD Classification Level H2
– Device CDM ESD Classification Level C3B
• Up to 1.5-A Maximum Load Current
• ±6% Current-Limit Accuracy at 1.7 A (Typical)
• Meets Universal Serial Bus (USB) Current-
Limiting Requirements
• Backwards Compatible With TPS2550/51 and
TPS2551-Q1
• Adjustable Current-Limit, 75 mA–1300 mA
(Typical)
• Constant-Current Version
• Fast Overcurrent Response - 2-μs (Typical)
• 85-mHigh-Side MOSFET
• 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)
• See the TI Switch Portfolio
2 Applications
• Automotive ECU Supply Rail Power Distribution
and Switching
• Automotive ECU Supply Rail Precision Current
Limiting
• Power Distribution and Switching
• Precision Current Limiting
• USB Ports and Hubs
3 Description
The TPS2553-Q1 power-distribution switch is
intended for applications where precision current
limiting is required or heavy capacitive loads and
short circuits are encountered. It provides up to 1.5 A
of continuous load current. This device offers a
programmable current-limit threshold between 75 mA
and 1.7 A (typical) 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 and off.
The TPS2553-Q1 device limits 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.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS2553-Q1
SOT-23 (6)
2.90 mm × 1.60 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Typical Application as USB Power Switch
5V USB
Input
RFAULT
100 kW
TPS2553-Q1
0.1 mF
IN
OUT
Fault Signal
Control Signal
FAULT
EN
ILIM
GND
USB Data
USB
Port
120 mF
RILIM
20 kW USB requirement only*
*USB requirement that downstream
facing ports are bypassed with at least
120 mF per hub
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.




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TPS2553-Q1 Datasheet Preview

TPS2553-Q1 Datasheet

Precision Adjustable Current-Limited Power-Distribution Switches

No Preview Available !

TPS2553-Q1
SLVSBD0B – NOVEMBER 2012 – REVISED JUNE 2020
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Pin Configuration and Functions ......................... 3
6 Specifications......................................................... 4
6.1 Absolute Maximum Ratings ...................................... 4
6.2 ESD Ratings.............................................................. 4
6.3 Recommended Operating Conditions....................... 4
6.4 Thermal Information .................................................. 5
6.5 Electrical Characteristics........................................... 5
6.6 Typical Characteristics .............................................. 7
7 Parameter Measurement Information ................ 10
8 Detailed Description ............................................ 11
8.1 Overview ................................................................. 11
8.2 Functional Block Diagram ....................................... 11
8.3 Feature Description................................................. 11
8.4 Device Functional Modes........................................ 12
8.5 Programming........................................................... 13
9 Application and Implementation ........................ 15
9.1 Application Information............................................ 15
9.2 Typical Applications ................................................ 16
10 Power Supply Recommendations ..................... 23
10.1 USB Self-Powered (SPH) and Bus-Powered (BPH)
Hubs......................................................................... 23
10.2 USB Low-Power Bus-Powered and High-Power
Bus-Powered Functions........................................... 23
11 Layout................................................................... 23
11.1 Layout Guidelines ................................................. 23
11.2 Layout Example .................................................... 23
11.3 Power Dissipation and Junction Temperature ...... 24
12 Device and Documentation Support ................. 25
12.1 Device Support...................................................... 25
12.2 Support Resource ................................................. 25
12.3 Trademarks ........................................................... 25
12.4 Electrostatic Discharge Caution ............................ 25
12.5 Glossary ................................................................ 25
13 Mechanical, Packaging, and Orderable
Information ........................................................... 25
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision A (March 2016) to Revision B
Page
• Changed Figure 1, Figure 2, and Figure 3 Images to show correct EN-assertion logic levels ............................................. 7
Changes from Original (November 2012) to Revision A
Page
• Added ESD Ratings 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
• Deleted (TPS2553-Q1) .......................................................................................................................................................... 1
• Deleted DBV package reference ........................................................................................................................................... 1
• Deleted UL Listed bullet ........................................................................................................................................................ 1
• Changed first two sentences of Description .......................................................................................................................... 1
• Deleted Power Pad reference from document ....................................................................................................................... 1
• Updated EN row from Pin Functions table ............................................................................................................................ 3
• Deleted General Switch Catalog and Ordering Information tables......................................................................................... 3
• Deleted all references to EN................................................................................................................................................... 4
• Changed wording of paragraph to include response to and release of signaling fault conditions ...................................... 12
• Changed paragraph wording to clarify recommended resistor range ................................................................................. 13
• Deleted Latch-Off Operation from title.................................................................................................................................. 15
• Added USB to powered hubs and powered functions ......................................................................................................... 22
• Added USB to titles ............................................................................................................................................................. 23
2
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Copyright © 2012–2020, Texas Instruments Incorporated


Part Number TPS2553-Q1
Description Precision Adjustable Current-Limited Power-Distribution Switches
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