www.ti.com

OUT

OUT

OUT

2

3

5

4

EN

OC

IN

IN

7

8

6

120 F

m

0.1 F

m

10kW

TPS2014

1

D-

D+

USBPort

Connector

GND

5V

3.3V

5V

OVERCURRENT

LOADENABLE

D1+

D1-

USB

Controller

PowerSupply

GND

SN75240

TUSB2040

0.1 F

m

+

LOW POWER BUS-POWERED FUNCTIONS AND HIGH POWER BUS-POWERED FUNCTIONS

OUT

OUT

OUT

2

3

5

4

EN

OC

IN

IN

7

8

6

22

F

m

0.1

F

m

TPS2014

1

D-

D+

Internal

Function

GND

5V

D+

D-

GND

GND

5V

USBPort

Connector

0.1

F

m

+

ESD PROTECTION

TPS2014

TPS2015

SLVS159D – DECEMBER 1996 – REVISED SEPTEMBER 2007

Figure 25. Typical USB Self-Powered Hub Application

Low-power and high-power bus-powered functions are powered by their input ports. If the load of the function is

more than the parallel combination of 44

Ω and 10 μF, it must implement inrush current limiting. The TPS20xx

provides this function with its controlled rise time during turn on.

Figure 26. Typical USB Bus-Powered Function Application

All TPS20xx terminals incorporate ESD-protection circuitry designed to withstand a 6-kV human-body-model

discharge as defined in MIL-STD-883C. Additionally, the output is protected from discharges up to 12 kV.

Copyright © 1996–2007, Texas Instruments Incorporated

Submit Documentation Feedback

17

Product Folder Link(s): TPS2014 TPS2015