TPS2074, TPS2075

FOUR-PORT USB HUB POWER CONTROLLERS

SLVS288A – SEPTEMBER 2000 – REVISED FEBRUARY 2001

1

POST OFFICE BOX 655303

Protection

description

The TPS2074 and TPS2075 provide a complete

USB hub power solution by incorporating three

major functions: current-limited power switches

for four ports, a 3.3-V 100-mA regulator, and a

DP0 line control to signal attach/detach of the hub.

These devices are designed to meet bus-pow-

ered and self-powered hub requirements. These

devices are also designed for hybrid hub

implementations and allow for automatic switch-

ing from self-powered mode to bus-powered

mode if loss of self-power is experienced. This

feature can be disabled by applying a logic high to

the BP_DIS input

Each port has a current-limited 100-m

Ω N-

channel MOSFET high-side power switch for

500 mA self-powered operation. Each port also

has a current-limited 500-m

Ω N-channel MOS-

FET high-side power switch for 100-mA bus-

powered operation. All the N-channel MOSFETs

are designed without parasitic diodes, preventing

current backflow into the inputs.

For applications where a 5-V regulator is needed,

use the TPS2070 or TPS2071 device.

SELECTION GUIDE

TA

USB HUB POWER CONTROLLERS

PACKAGED DEVICES

TA

USB HUB POWER CONTROLLERS

PIN COUNT

BPMODE

HTSSOP (DAP)

SSOP (DB)†

Four port with internal LDO controller

32

Active low

TPS2070DAP

—

40

°Cto85°C

Four-port with internal LDO controller

32

Active high

TPS2071DAP

—

– 40

°C to 85°C

Four port without internal LDO controller

24

Active low

—

TPS2074DB

Four-port without internal LDO controller

24

Active high

—

TPS2075DB

† The DB package is available taped and reeled. Add an R suffix to the device type (e.g., TPS2074DBR).

Copyright

 2001, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

NC – No internal connection

† Pin 9 is active low (BPMODE) for TPS2074

and active high (BPMODE) for TPS2075.

SP

DP0_RST

BP

DP0

DM0

Power

Supply

D+

D–

5 V

GND

1.5

k

Ω

Upstream

Port

3.3 V_OUT

BPMODE

D+

D–

5 V

GND

D+

D–

5 V

GND

D+

D–

5 V

GND

D+

D–

5 V

GND

OUT1

OUT2

OUT3

OUT4

DP1

DM1

DP2

DM2

DP3

DM3

DP4

DM4

Downstream

Ports

TPS2074

Hub

Controller

VCC EN OC

‡ See Figure 33 for complete implementation.

1

2

3

4

5

6

7

8

9

10

11

12

24

23

22

21

20

19

18

17

16

15

14

13

PG_DLY

EN1

AGND

PG

SP

SP

NC

3.3V_OUT

DP0_RST

EN2

DGND

BP_DIS

BP

OUT1

OUT2

OUT3

OUT4

OC4

OC3

OC2

OC1

EN4

EN3

DB PACKAGE

(TOP VIEW)