Datasheet

USB POWER-DISTRIBUTION REQUIREMENTS
TPS2062A
TPS2066A
SLVS798F – JANUARY 2008 – REVISED NOVEMBER 2008 ........................................................................................................................................... www.ti.com
USB can be implemented in several ways regardless of the type of USB device being developed. Several
power-distribution features must be implemented.
• SPHs must:
– Current-limit downstream ports
– Report overcurrent conditions
• BPHs must:
– Enable/disable power to downstream ports
– Power up at < 100 mA
– Limit inrush current ( < 44 Ω and 10 µ F)
• Functions must:
– Limit inrush currents
– Power up at < 100 mA
The feature set of the TPS2062A/66A meets each of these requirements. The integrated current-limiting and
overcurrent reporting is required by self-powered hubs. The logic-level enable and controlled rise times meet the
need of both input and output ports on bus-powered hubs and the input ports for bus-powered functions.
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Product Folder Link(s): TPS2062A TPS2066A