TPS2553DBVT Description

The TPS2553DBVT power-distribution switches deliver up to 1.5 A of continuous load current and are designed for situations that demand precision current limiting or heavy capacitive loads and short circuits. Through an external resistor, the TPS2553DBVT allows for a programmable current-limit threshold of 75 mA to 1.7 A (typical). At the higher current-limit levels, current-limit accuracy can be as low as 6%. To minimize current surges during turn on and turn off, the power-switch rise and fall times are managed.

TPS2553DBVT Features

• Up to 1.5-A Maximum Load Current

• ±6% Current-Limit Accuracy at 1.7 A (Typical)

• Meets USB Current-Limiting Requirements

• Backward 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 (DVB 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

TPS2553DBVT Applications

• USB Ports and Hubs

• Digital TVs

• Set-Top Boxes

• VOIP Phones