The VL812 USB 3.0 hub controller from Via Labs, Inc., incorporates a new low-power design featuring an industry-first integrated 5V DC-DC switching regulator. The new hub offers a single-chip solution that achieves both high power efficiency and greater system integration for reduced BOM. It is targeted for mobile apps and Ultrabooks in particular.
In typical configurations, the VIA Labs VL812 USB 3.0 Hub Controller consumes less than 0.5w under load, making it one of the market's low-power leaders. The low operational power consumption of the new hub allows users to attach an external 2.5" USB 3.0 hard drive, USB 2.0 Flash drive, and a USB Mouse simultaneously without the need for an AC adapter, when connected to a regular USB 3.0 port.
The VL812 supports the higher transfer rates of the USB 3.0 specification, while remaining fully backward compatible with USB 2.0 and 1.1 hosts, hubs, and devices. In addition to rapid transfers, the 4-port VL812 integrates battery charging controller logic, enabling Dedicated Charging Port (DCP) and Charging Downstream Port (CDP) functionality as described in the USB Battery Charging 1.2 specification, in addition to supporting the YD/T 1591-2009 specification and other vendor-specific modes.
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Employing an advanced CMOS process, VL812's integrated in-house USB PHY features adaptive equalization, offering improved signal integrity over a variety of topologies and channel conditions, making VL812 well suited not only for stand-alone hubs, but also USB Docking, integrated motherboard, and compound device applications.
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