DIO7553ST6

The DIO7552/7553 is power distribution switches that intended for applications where precision current limiting is required or heavy capacitive loads and short circuits are encountered and provide up to 2.31A of continuous load current. When the voltage is higher than the maximum voltage of 5%, the chip could be maintained for at least 10ms without damage. A programmable current-limit threshold is offered between 400mA and 2.57A (typ) via an external resistor. Current-limit accuracy is ±10% @A. The power-switch rise and fall times are controlled to minimize current surges during turn on/off. A constant-current mode is used when the output load exceeds the current-limit threshold. The DIO7552/7553 limits 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.

Applications

• USB Ports & USB Hubs
• Digital TV
• Set-Top Boxes
• VOIP Phones Short-Circuit Protections

Key features

• 70mΩ(typ) High-Side MOSFET
• 2.31A Maximum Continuous Load Current
• ±10% Current-Limit Accuracy at 1A typically
• Adjustable Current Limit: 400mA–2.57A (typ)
• Operating Range: 2.7V to 5.5V
• 70μμ (typ) Quiescent Current
• 2μs Fast Over current Response Typically
• Reverse Input-Output Voltage Protection
• 6kV HBM ESD Protection
• Green package: SOT23-6 and DFN2×2-6 is pin compatible