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TPS2557

Texas Instruments
Part Number TPS2557
Manufacturer Texas Instruments
Description Precision Adjustable Current-Limited Power-Distribution Switches
Published Sep 12, 2021
Detailed Description Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS2556, TPS2557 SLVS931B – NO...
Datasheet PDF File TPS2557 PDF File

TPS2557
TPS2557

Overview
Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS2556, TPS2557 SLVS931B – NOVEMBER 2009 – REVISED DECEMBER 2016 TPS255x Precision Adjustable Current-Limited Power-Distribution Switches 1 Features •1 Meets USB Current-Limiting Requirements • Adjustable Current Limit, 500 mA to 5 A (Typical) • ±6.
5% Current-Limit Accuracy at 4.
5 A • Fast Overcurrent Response: 3.
5-µs (Typical) • 22-mΩ High-Side MOSFET • Operating Voltage: 2.
5 V to 6.
5 V • 2-µA Maximum Standby Supply Current • Built-in Soft Start • 15-kV and 8-kV System-Level ESD Capable • UL Listed: File No.
E169910 and CB IEC60950-1- am2 ed2.
0 2 Applications • USB Ports and Hubs • Digital TVs • Set-Top Boxes • VOIP Phones 3 Description The TPS255x power-distribution switch is intended for applications where precision current limiting is required or heavy capacitive loads and short circuits are encountered.
These devices offer a programmable current-limit threshold between 500 mA and 5 A (typical) through an external resistor.
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 switching into a constant-current mode when the output load exceeds the current-limit threshold.
The FAULT logic output asserts low during overcurrent and overtemperature conditions.
Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) TPS2556, TPS2557 VSON (8) 3.
00 mm × 3.
00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet.
Typical Application as USB Power Switch 2.
5V – 6.
5V R FAULT 100 kΩ 0.
1 uF IN IN Fault Signal FAULT OUT OUT R ILIM ILIM Control Signal EN GND VOUT CLOAD Power Pad 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.
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