TPS2552_17 Datasheet, PDF (1/38 Pages) Texas Instruments – Precision Adjustable Current-Limited Power-Distribution Switches

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
Reference
Design
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
R_FAULT
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
R_ILIM
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.