15

16

1

2

IN

DM_OUT

3

4

DP_OUT

ILIM_SEL

13

14

6

5

8

12

11

10

9

DM_IN

DP_IN

N/C

OUT

Exposed

Thermal Die

TPS2540/40A/41/41A

RTE Package

(Top View)

7

1

IN

0.1 mF

13 FAULT

10 kW

FAULT Signal

4.5 V to 5.5 V

4

ILIM_SEL

ILIM Select

6

CTL1

5

EN/DSC

7

CTL2

8

CTL3

10

11

2

3

DP_IN

DM_IN

DM_OUT

DP_OUT

12

OUT

16

ILIM0

15

ILIM1

14

GND

2x

TPS2540/40A/41/41A

Power Switch EN

Mode Select I/O

Mode Select I/O

Mode Select I/O

To Host Controller

UDG-10116

VBUS

D-

D+

GND

To Peripheral

To System Bus

TPS2540, TPS2540A

TPS2541, TPS2541A

www.ti.com

SLVSAG2C

– OCTOBER 2010 – REVISED OCTOBER 2011

USB Charging Port Power Switch and Controller

Check for Samples: TPS2540, TPS2540A, TPS2541, TPS2541A

1

FEATURES

DESCRIPTION

The

TPS2540/40A

and

TPS2541/41A

are

a

2

•

Meets Battery Charging Specification BC1.2

combination of current-limited USB port power switch

for DCP and CDP

with a USB 2.0 high-speed data line (D+/D-) switch

•

Meets Chinese Telecommunications Industry

and

a

USB

charging

port

identification

circuit.

Standard YD/T 1591-2009

Applications

include

notebook

PCs

and

other

intelligent USB host devices. The wide bandwidth (2.6

•

Supports Sleep-Mode Charging for Most

GHz) data-line switch also features low capacitance

and low on resistance, allowing signals to pass with

Compliant Devices

minimum

edge

and

phase

distortion.

The

•

Compatible With USB 2.0 and 3.0 Power

TPS2540/40A/41/41A monitors D+ and D-, providing

Switch Requirements

the correct hand-shaking protocol with compliant

•

2.6-GHz Bandwidth USB 2.0 Data Switch

client devices.

•

73-m

Ω (typ.) High-Side MOSFET

The TPS2540/40A/41/41A supports the following

charging logic schemes:

•

Adjustable Current Limit up to 2.8 A (typical)

•

USB 2.0 BC1.2

•

OUT Discharge Through CTLx=000

(TPS2540/40A) or DSC (TPS2541/41A) Input

•

Chinese Telecom Standard YD/T 1591-2009

•

Divider Mode, compliant with Apple devices such

•

Longer Detach Detection Time (TPS2540A/41A)

Supporting Additional Legacy Devices

•

Available in 16-Pin QFN Package

CTL1-CTL3 logic inputs are used to select one of the

various charge modes provided by the TPS2540/40A

and TPS2541/41A. These charge modes allow the

APPLICATIONS

host device to actively select between Dedicated

•

USB Ports/Hubs

Charging

Port

(DCP)

(wall-adapter

emulation),

•

Notebook PCs

Charging Downstream Port (CDP) (active USB 2.0

data

communications

with

1.5-A

support),

or

•

Universal Wall Charging Adapter

Standard Downstream Port (SDP) USB 2.0 Mode

(active USB 2.0 data communications with 500-mA

support). The TPS2540/40A/41/41A also integrates

an auto-detect feature that supports both DCP

schemes for Battery Charging Specification (BC1.2)

and the Divider Mode without the need for outside

user interaction.

TPS2540/40A/41/41A RTE Package and Typical Application Diagram

1

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.

2

Apple, iPod, iPhone are registered trademarks of Apple Inc.

PRODUCTION DATA information is current as of publication date.

Copyright

© 2010–2011, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.