Express Card Power Interface Switch


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The RT9725A/B power distribution switches are designed to fulfill power management requirements of Express Card specification. The RT9725A/B supports systems with single slot ExpressCard|34 and ExpressCard|54 socket. The device distributes 3.3V, AUX and 1.5V to the Express Card socket. Each power rail is protected with current limit circuitry when output load exceeds over-current threshold or short-circuits occurs. A thermal protection circuit turns off switches to prevent the device from damage when power dissipation is increased by continuous heavy overloads or short-circuits in the switches. The RT9725A/B is available in WQFN-20L 3x3 package.


  • PCs
  • PDAs
  • Digital Cameras
  • TV and Set Top Boxes
  • Notebooks
TitleLast UpdateShareDownload
Express Card Power Interface Switch2009/11/05
Title Last Update ShareDownload
Express Card Power Interface Switch 2015/05/19