Datasheet

IN
OC1
OC2
2
8
3
5
4
7
0.1 µF 10 µF
Internal
Function
OUT1
Power Supply
3.3 V
EN1
6
0.1 µF 10 µF
OUT2
Internal
Function
0.1 µF
10 µF
USB
Control
GND
V
BUS
D−
D+
TPS2062
EN2
GND
1
TPS2061, TPS2062, TPS2063
TPS2065, TPS2066, TPS2067
SLVS490I –DECEMBER 2003–REVISED OCTOBER 2009 www.ti.com
Figure 28. High-Power Bus-Powered Function
USB POWER-DISTRIBUTION REQUIREMENTS
USB can be implemented in several ways, and, regardless of the type of USB device being developed, several
power-distribution features must be implemented.
• Hosts/SPHs must:
– Current-limit downstream ports
– Report overcurrent conditions on USB V
BUS
• BPHs must:
– Enable/disable power to downstream ports
– Power up at <100 mA
– Limit inrush current (<44 Ω and 10 μF)
• Functions must:
– Limit inrush currents
– Power up at <100 mA
The feature set of the TPS206x allows them to meet each of these requirements. The integrated current-limiting
and overcurrent reporting is required by hosts and self-powered hubs. The logic-level enable and controlled rise
times meet the need of both input and output ports on bus-powered hubs, as well as the input ports for
bus-powered functions (see Figure 29).
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Product Folder Link(s): TPS2061 TPS2062 TPS2063 TPS2065 TPS2066 TPS2067