TPS2551-Q1 Datasheet | Texas Instruments

Features - Qualified for automotive applications - Adjustable current-limit: 100 m A to 1100 m A - Fast overcurrent response: 2 μs (typ) - 94-mΩ high-side MOSFET - Reverse input-output voltage protection - Operating range: 2.5 V to 6.5 V - Deglitched fault report - 1-μA maximum standby supply current - Junction temperature range: - 40°C to 125°C - Built-in soft-start - 15-k V ESD protection (with external capacitance) 2 Applications - USB ports/hubs - Cell phones - Laptops - Heavy capacitive loads - Reverse-voltage protection 5-V USB Input RFAULT 100 kΩ 0.1 µF IN 3 Description The TPS2551 power-distribution switch is intended for applications in which heavy capacitive loads and short circuits are likely to be encountered, incorporating a 100-mΩ, N-channel MOSFET in a single package. The current-limit threshold is user adjustable between 100  m A and 1.1  A via an external resistor. The power-switch rise and fall times are controlled to minimize current surges during switching. The device limits the output current to a desired level by switching into a constant-current mode when the output load exceeds the current-limit threshold or a short is present. An internal reverse-voltage detection parator disables the power-switch in the event that the output voltage is driven higher than the input to protect devices on the input side of the switch. The FAULT logic output asserts low during both overcurrent and reverse-voltage conditions. Package Information PART NUMBER PACKAGE(1) PACKAGE SIZE (NOM)(2) TPS2551-Q1 SOT-23 (6) 2.90 mm × 1.60 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. (2) The package size (length × width) is a nominal value and includes pins, where applicable. USB Data USB Port 120 µF - FAULT Signal Control Signal FAULT ILIM...