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The RT9731A/B is a dual channel power distribution switch intended for applications where precision current limiting is required or heavy capacitive loads and short circuits are encountered. This device offers a programmable current limit threshold between 560mA and 2.8A (typ.) per channel via an external resistor. The power-switch's rising and falling times are controlled to minimize current surges during on/off transitions. <p align="justify">Each channel of the RT9731A/B limits the output current to a safe level by switching into constant-current mode whenever the output load exceeds the current limit threshold. The FLAG logic output of each channel independently asserts low during over current. </p><p align="justify">The RT9731A/B is available in a thin WDFN-10L 3x3 package.</p>
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productFeature

  • 2.5V to 5.5V Input Voltage Range

  • Two Separate Current Limiting Channels

  • Meets USB Current Limiting Requirements

  • Adjustable Current Limit from 560mA to 2.8A

  • ±7.5% Current Limit Accuracy at 2.8A

  • Two 44mΩ High Side MOSFETs

  • 2μA Maximum Standby Supply Current

  • Built-in Soft-Start

  • Thin 10-Lead WDFN Package

  • UL Approved-E219878

  • Nemko Approved-NO65969

  • RoHS Compliant and Halogen Free

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USB Ports/Hubs<br />Digital TV<br />Set-Top Boxes<br />VOIP Phones
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