Description:

The TPS2553-Q1 power-distribution switch is intended for applications where precise current limiting is required or where high capacitive loads and shorts are encountered, and it provides up to 1.5A of continuous load current. These devices provide a programmable current-limit threshold between 75mA and 1.7A (typical) via an external resistor. Current-limit accuracy of ±6% is achieved at higher current-limit settings. The rise and fall times of the power switch are controlled to minimize current ringing during turn-on and turn-off. When the output load exceeds the current-limit threshold, the TPS2553-Q1 devices limit the output current to a safe level by operating in constant-current mode. When the output voltage is driven higher than the input, an internal reverse-voltage comparator disables the power switch to protect devices on the switch input. The FAULT output is asserted low during overcurrent and reverse-voltage conditions.

Features:

• Qualified for automotive applications (DBV package)

• AEC-Q100 qualified with the following results:

– Device temperature Grade 1: –40°C to 125°C ambient operating temperature range

– Device HBM ESD classification level H

– Device CDM ESD classification level C3B

• Up to 1.5A maximum load current

• ±6% current-limit accuracy at 1.7A (typical)

• Meets USB current-limiting requirements

• Backward compatible with TPS2550/51

• Adjustable current limit, 75mA–1300mA (typical)

• Constant current (TPS2553-Q1)

• Fast overcurrent response – 2µs (typical)

• 85mΩ high-side MOSFET (DBV package)

• Reverse input-output voltage protection

• Operating range: 2.5V to 6.5V

• Built-in soft start

• 15kV ESD protection per IEC 61000-4-2 (with external capacitor)

• UL Listed – File No. E169910 and NEMKO IEC60950-1-am1 ed2.0

• See TI Switch Product Portfolio

Applications:

• Automotive applications

• Power distribution

• Current limiting