Application Notes
DN-85 UCC3981 USB Power Controller IC EVM Board Schematic
Texas Instruments
Published : 05 Sep 99
Description
The UCC3981 Power Controller provides a self-powered USB hub with a local 3.3V regulated voltage as well as four 5V regulated voltages for USB ports. The 3.3V linear regulator provides power to a local USB microcontroller. The 5V outputs are current-limited to 500mA and the 3.3V output to 100mA in compliance with USB specifications. This demonstration kit provides all the circuitry necessary to e
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