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TPS2540A

更新时间： 2024-11-06 00:56:35
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德州仪器 - TI /
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40页 1056K
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USB Charging Port Power Switch and Controller

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TPS2540A 数据手册

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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  
combination of current-limited USB port power switch  
with a USB 2.0 high-speed data line (D+/D-) switch  
a
2
•
•
•
Meets Battery Charging Specification BC1.2  
for DCP and CDP  
Meets Chinese Telecommunications Industry  
Standard YD/T 1591-2009  
and  
a USB charging port identification circuit.  
Applications include notebook PCs and other  
intelligent USB host devices. The wide bandwidth (2.6  
GHz) data-line switch also features low capacitance  
and low on resistance, allowing signals to pass with  
minimum edge and phase distortion. The  
TPS2540/40A/41/41A monitors D+ and D-, providing  
the correct hand-shaking protocol with compliant  
client devices.  
Supports Sleep-Mode Charging for Most  
Available Apple® Devices and/or BC1.2  
Compliant Devices  
•
Compatible With USB 2.0 and 3.0 Power  
Switch Requirements  
•
•
•
•
2.6-GHz Bandwidth USB 2.0 Data Switch  
73-mΩ (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  
Chinese Telecom Standard YD/T 1591-2009  
Divider Mode, compliant with Apple devices such  
as iPod® and iPhone®  
OUT Discharge Through CTLx=000  
(TPS2540/40A) or DSC (TPS2541/41A) Input  
•
•
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  
host device to actively select between Dedicated  
Charging Port (DCP) (wall-adapter emulation),  
Charging Downstream Port (CDP) (active USB 2.0  
data communications with 1.5-A support), or  
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.  
APPLICATIONS  
•
•
•
USB Ports/Hubs  
Notebook PCs  
Universal Wall Charging Adapter  
TPS2540/40A/41/41A RTE Package and Typical Application Diagram  
To System Bus  
To Peripheral  
TPS2540/40A/41/41A  
RTE Package  
(Top View)  
TPS2540/40A/41/41A  
IN OUT 12  
4.5 V to 5.5 V  
1
CUSB  
VBUS  
D-  
D+  
0.1 mF  
ILIM0 16  
ILIM1 15  
RFAULT  
10 kW  
GND  
16  
15  
14  
13  
2x  
RILIM  
FAULT Signal  
13 FAULT  
1
2
3
4
IN  
DM_OUT  
DP_OUT  
ILIM_SEL  
12 OUT  
11  
10 DP_IN  
GND 14  
ILIM Select  
4
5
6
7
8
ILIM_SEL  
DM_IN  
Exposed  
Thermal Die  
Power Switch EN  
Mode Select I/O  
Mode Select I/O  
Mode Select I/O  
EN/DSC  
CTL1  
DM_IN 11  
DP_IN 10  
9
N/C  
CTL2  
DM_OUT  
DP_OUT  
2
3
5
6
7
8
To Host Controller  
CTL3  
UDG-10116  
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.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2010–2011, Texas Instruments Incorporated  
 
 
 
 
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