TPS2557DRBR  Description

TPS255x distribution switches are suitable for applications that require precise current limiting or encounter heavy capacitive loads and short circuits. These devices provide a programmable current limiting threshold between 500 mA and 5 A (typical) through external resistors. The rise and fall time of the power switch is controlled to minimize the current surge during turning and turn-off. When the output load exceeds the current limiting threshold, the TPS255x device will switch to constant current mode, thus limiting the output current to a safe level. Under the conditions of overcurrent and overheating, the fault logic output is low.

TPS2557DRBR   Features

? 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

TPS2557DRBR   Applications

? USB Ports and Hubs

? Digital TVs

? Set-Top Boxes

? VOIP Phones