TPS2559DRCR Ethernet Switch IC Power Distribution 2.5-6.5V, 5.5A, 13mA Crnt Lmt Pwr Dist Sw

1 Features

• 2.5 to 6.5 V Operating Range

• Adjustable 1.2 to 4.7 A I(LIMIT) (±4.4% at 4.7 A)

• 3.5 μs Short Circuit Shutoff (Typical)

• 13-mΩ High-Side MOSFET

• 2-μA Maximum Standby Supply Current

• Built-in Soft-Start

• 8 kV / 15 kV System-Level ESD Capable

• UL 2367 Recognition Pending

  
  

2 Applications

• USB Ports/Hubs

• Digital TV

• Set-Top Boxes

• VOIP Phones

3 Description

The TPS2559 power-distribution switch is intended for applications where a low resistance, precision current limit switch is required or heavy capacitive loads are encountered. The TPS2559 provides up to 5.5 A of continuous load current with a precise current limit set by a single resistor to ground. Output current is maintained at a safe level by switching into a constant-current mode when the output load exceeds the current-limit threshold. During overload events the output current is limited to the level set by R(ILIM). If a persistent overload occurs, the device goes into thermal shutoff to prevent damage to the TPS2559.

The power-switch rise and fall times are controlled to minimize current surges during turn on or off. The FAULT logic output asserts low during overcurrent or overtemperature conditions.

Device Information