The G528/G528A is an integrated high-side power switch optimized for self-powered and bus-powered Universal Serial Bus (USB) applications. The G528/G528A satisfies the USB standards. The switch's low on-resistance meets USB voltage drop requirements. When the output load exceeds current-limit threshold, G528/G528A switches into constant-current mode and limit the output current to a safe level, which is typically 1.4A. An open-drain flag output is also available to indicate fault conditions to the local USB controller. Soft start eliminates the momentary voltage drop on the upstream port that may occur when the switch is enabled in bus-powered applications.