TUSB8041-Q1

SLLSEE6B – JULY 2014 – REVISED JANUARY 2016

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Table of Contents

8.4

Device Functional Modes........................................ 15

1

Features .................................................................. 1

8.5

Register Maps ......................................................... 16

2

Applications ........................................................... 1

9

Applications and Implementation ...................... 28

3

Description ............................................................. 1

9.1

Application Information............................................ 28

4

Revision History..................................................... 2

9.2

Typical Application .................................................. 28

5

Description (Continued) ........................................ 2

10

Power Supply Recommendations ..................... 36

6

Pin Configuration and Functions ......................... 4

10.1

TUSB8041-Q1 Power Supply ............................... 36

7

Specifications......................................................... 9

10.2

Downstream Port Power ....................................... 36

7.1

Absolute Maximum Ratings ..................................... 9

10.3

Ground .................................................................. 36

7.2

ESD Ratings.............................................................. 9

11

Layout................................................................... 37

7.3

Recommended Operating Conditions ....................... 9

11.1

Layout Guidelines ................................................. 37

7.4

Thermal Information ................................................ 10

11.2

Layout Examples................................................... 38

7.5

Electrical Characteristics, 3.3-V I/O ........................ 10

12

Device and Documentation Support ................. 40

7.6

Timing Requirements, Power-Up ............................ 11

12.1

Community Resources.......................................... 40

7.7

Hub Input Supply Current ....................................... 11

12.2

Trademarks ........................................................... 40

8

Detailed Description ............................................ 12

12.3

Electrostatic Discharge Caution ............................ 40

8.1

Overview ................................................................. 12

12.4

Glossary ................................................................ 40

8.2

Functional Block Diagram ....................................... 12

13

Mechanical, Packaging, and Orderable

8.3

Feature Description................................................. 12

Information ........................................................... 40

4 Revision History

Changes from Revision A (August 2015) to Revision B

Page

•

Changed Active High. (PWRCTL_POL = 0) To: Active High. (PWRCTL_POL = 1) in Table 48 ........................................ 29

•

Changed text in the Clock, Reset, and Misc section From: "The PWRCTL_POL is pulled down which results in

active low" To: "The PWRCTL_POL is left unconnected which results in active high"........................................................ 33

•

Deleted R17 from pin 41 of Figure 11 ................................................................................................................................. 33

Changes from Original (July 2014) to Revision A

Page

•

Added Note ""Power switching must be supported for battery charging applications"" to pin FULLPWRMGMTz /

SMBA1/SS_UP in the Pin Functions table ............................................................................................................................. 7

•

Added Note "Individual power control must be enabled for battery charging applications" to pin GANGED / SMBA2 /

HS_UP in the Pin Functions table .......................................................................................................................................... 8

•

Changed the Handling Ratings table to the ESD Ratings table ............................................................................................. 9

•

relationship between VDD33 and VDD": Added Note 2 to the MIN value ........................................................................... 11

•

Added Note: "An active reset is required.." To the Timing Requirements, Power-Up table................................................. 11

•

Changed text in the Clock, Reset, and Misc section From: "The PWRCTL_POL is pulled down which results in

active high power enable" To: "The PWRCTL_POL is pulled down which results in active low power enable" ................. 33

5 Description (Continued)

The TUSB8041-Q1 supports per port or ganged power switching and over-current protection, and supports

battery charging applications.

An individually port power controlled hub switches power on or off to each downstream port as requested by the

USB host. Also when an individually port power controlled hub senses an over-current event, only power to the

affected downstream port will be switched off.

A ganged hub switches on power to all its downstream ports when power is required to be on for any port. The

power to the downstream ports is not switched off unless all ports are in a state that allows power to be removed.

Also when a ganged hub senses an over-current event, power to all downstream ports will be switched off.

2

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