• ±6% Current-Limit Accuracy at 1.3 A
• Meets USB Current-Limiting Requirements
• Backwards Compatible with TPS2550/51
• Adjustable Current Limit, 75 mA–1300 mA (typ)
• Constant-Current (TPS2552/53) and Latch-off (TPS2552-1/53-1) Versions
• 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
• 1-µA Maximum Standby Supply Current
• Built-in Soft-Start
• 15 kV ESD Protection per IEC 61000-4-2 (with External Capacitance)
• USB Ports/Hubs
• Digital TV
• Set-Top Boxes
• Mobile Phones
• VOIP Phones
The TPS2552/53 3 andTPS2552-1/53-1 power-distribution switches are intended for applications where precision current limiting is required or heaw capacitive loads and short circuits are encountered. These devices offer a programmable current-limit threshold between 75 mA and 1.3 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 onVoff.
TPS2552/53 devices limit the output current to a safe level by switching into a constant-current mode when the output load exceeds the current-limit threshold. TPS2552-1/53-1 devices provide circuit breaker functionality by latching off the power switch during overcurrent or reverse-voltage situations. An internal reverse-voltage detection comparator 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 overcurrent and reverse-voltage conditions.
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