●DESCRIPTION
●The TPS2553-Q1 power-distribution switches are intended for applications where precision current-limiting is required or heavy capacitive loads and short circuits are encountered and provide up to 1.5 A of continuous load current. These devices offer a programmable current-limit threshold between 75 mA and 1.7 A (typ) via an external resistor. Current-limit accuracy as tight as ±6% can be achieved at the higher current-limit settings. The power-switch rise and fall times are controlled to minimize current surges during turn on/off. TPS2553-Q1 devices limit the output current to a safe level by using a constant-current mode when the output load exceeds the current-limit threshold. An internal reverse- voltage comparator disables the power- switch
●when the output voltage is driven higher than the input to protect devices on the input side of the switch. The FAULT output asserts low during overcurrent and reverse-voltage conditions.
●FEATURES
●• 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 (typ)
●• Meets USB Current-Limiting Requirements
●• Backwards Compatible with TPS2550/51
●• Adjustable current-limit, 75 mA–1300 mA (typ)
●• Constant-Current (TPS2553-Q1)
●• Fast Overcurrent Response - 2-μs (typ)
●• 85-mΩ High-Side MOSFET (DBV 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
●• See the TI Switch Portfolio
●APPLICATIONS
●• Automotive
●• Power Distribution
●• Current Limiting
