TPS2559DRCR

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.

Applications

• USB Ports/Hubs
• Digital TV
• Set-Top Boxes
• VOIP Phones

Key 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