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TPS2553-1 Fiches technique(PDF) 1 Page - Texas Instruments

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No de pièce TPS2553-1
Description  PRECISION ADJUSTABLE CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES
Download  31 Pages
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

TPS2553-1 Fiches technique(HTML) 1 Page - Texas Instruments

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1
FEATURES
DESCRIPTION
APPLICATIONS
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
TPS2552/TPS2553
DBVPACKAGE
(TOP VIEW)
EN = ActiveLowfortheTPS2552
EN= ActiveHighfortheTPS2553
Add-1topartnumberforlach-offversion
OUT
IN
GND
FAULT
ILIM
EN
R
ILIM
20kW
R
FAULT
100kW
ControlSignal
5VUSB
Input
USB
Port
USBData
TPS2552/53
0.1 F
m
120 F
m
Fault Signal
PowerPad
USBrequirementonly*
*
facingportsarebypassedwithatleast
120 Fperhub
USBrequirementthatdownstream
m
TPS2552/TPS2553
DRVPACKAGE
(TOP VIEW)
TPS2552
TPS2553, TPS2552-1, TPS2553-1
www.ti.com...................................................................................................................................... SLVS841C – NOVEMBER 2008 – REVISED SEPTEMBER 2009
PRECISION ADJUSTABLE CURRENT-LIMITED POWER-DISTRIBUTION SWITCHES
2
• Up to 1.5 A Maximum Load Current
• ±6% Current-Limit Accuracy at 1.7 A (typ)
The
TPS2552/53
and
TPS2552-1/53-1
power-distribution
switches
are
intended
for
• Meets USB Current-Limiting Requirements
applications
where
precision
current
limiting
is
• Backwards Compatible with TPS2550/51
required or heavy capacitive loads and short circuits
• Adjustable Current Limit, 75 mA–1700 mA (typ)
are encountered and provide up to 1.5 A of
continuous load current. These devices offer a
• Constant-Current (TPS2552/53) and Latch-off
programmable current-limit threshold between 75 mA
(TPS2552-1/53-1) Versions
and 1.7 A (typ) via an external resistor. Current-limit
• Fast Overcurrent Response - 2-µS (typ)
accuracy as tight as ±6% can be achieved at the
• 85-mΩ High-Side MOSFET (DBV Package)
higher current-limit settings. The power-switch rise
and fall times are controlled to minimize current
• Reverse Input-Output Voltage Protection
surges during turn on/off.
• Operating Range: 2.5 V to 6.5 V
TPS2552/53 devices limit the output current to a safe
• Built-in Soft-Start
level by using a constant-current mode when the
• 15 kV ESD Protection per IEC 61000-4-2 (with
output load exceeds the current-limit threshold.
External Capacitance)
TPS2552-1/53-1
devices
provide
circuit
breaker
functionality by latching off the power switch during
• UL Listed – File No. E169910
overcurrent or reverse-voltage situations. An internal
reverse-voltage
comparator
disables
the
power-switch when the output voltage is driven higher
• USB Ports/Hubs
than the input to protect devices on the input side of
• Digital TV
the switch. The FAULT output asserts low during
• Set-Top Boxes
overcurrent and reverse-voltage conditions.
• VOIP Phones
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 © 2008–2009, 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.


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