TPS2552DDBVT

TPS2552D and TPS2553D power distribution switches are designed for applications requiring current-limiting accuracy or subject to heavy capacitive loads and short circuits, providing up to 1.5A continuous load current. These devices offer a programmable current-limit threshold of 75mA to 1.7A (typical) via an external resistor. Current-limit accuracy as tight as ±6% is achievable at higher current-limit settings. Controlled rise and fall times on the power switch significantly reduce inrush current during turn-on/turn-off. When the output load exceeds the current-limit threshold, the TPS2552D/3D devices use constant-current mode to clamp the output current to a safe level. When the output voltage is driven above the input voltage, an internal reverse-voltage comparator disables the power switch to protect devices at the switch input. The FAULT output is asserted low under both overcurrent and reverse-voltage conditions.

Applications

• USB ports/hubs
• Digital TV
• Set-top boxes
• Voice over IP (VOIP) phones

Key features

• Maximum load current up to 1.5A
• Current limit accuracy of ±6% (typical) at 1.7A
• Meets USB current limiting requirements
• Backward compatible with TPS2550/51
• Adjustable current limit, 75mA - 1700mA (typical)
• Constant current (TPS2552D and TPS2553D)
• Fast overcurrent response - 2μs (typical)
• 85mΩ high-side MOSFET (DBV package)
• Reverse input-to-output voltage protection
• Operating range: 2.7V to 6.5V
• Integrated 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