Description
The TPS2553QDBVRQ1 power-distribution switch is designed for applications that need precise current limiting or that include significant capacitive loads and short circuits. It can deliver a continuous load current of up to 1.5 A. An external resistor can be used to program a current-limit threshold between 75 mA and 1.7 A (typical). At the higher current-limit levels, current-limit accuracy of up to ±6% can be reached. To minimize current surges during turn on and off, the rise and fall times of the power switch are managed.
When the output load exceeds the current-limit threshold, the TPS2553QDBVRQ1 device uses a constant-current mode to limit the output current to a safe level. To protect devices on the input side of the switch, an inbuilt reverse-voltage comparator disables the power switch when the output voltage is driven higher than the input voltage. During overcurrent and reverse-voltage circumstances, the FAULT output asserts low.
Features
? 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)
? See the TI Switch Portfolio
? Adjustable Current-Limit, 75 mA–1300 mA (Typical)
? Constant-Current Version
? Fast Overcurrent Response - 2-μs (Typical)
? 85-m? High-Side MOSFET
? Qualified for Automotive Applications
? 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 H2
– Device CDM ESD Classification Level C3B
? Up to 1.5-A Maximum Load Current
? ±6% Current-Limit Accuracy at 1.7 A (Typical)
? Meets Universal Serial Bus (USB) Current Limiting Requirements
Applications
? Power Distribution and Switching
? Precision Current Limiting
? USB Ports and Hubs
? Automotive ECU Supply Rail Power Distribution and Switching
? Automotive ECU Supply Rail Precision Current Limiting