TPS2541ARTER Datasheet, PDF (1/40 Pages) Texas Instruments – USB Charging Port Power Switch and Controller

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TPS2540, TPS2540A
TPS2541, TPS2541A
SLVSAG2C – OCTOBER 2010 – REVISED OCTOBER 2011
USB Charging Port Power Switch and Controller
Check for Samples: TPS2540, TPS2540A, TPS2541, TPS2541A
FEATURES
1
•2 Meets Battery Charging Specification BC1.2
for DCP and CDP
• Meets Chinese Telecommunications Industry
Standard YD/T 1591-2009
• 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
• Adjustable Current Limit up to 2.8 A (typical)
• 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
APPLICATIONS
• USB Ports/Hubs
• Notebook PCs
• Universal Wall Charging Adapter
DESCRIPTION
The TPS2540/40A and TPS2541/41A are a
combination of current-limited USB port power switch
with a USB 2.0 high-speed data line (D+/D-) switch
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.
The TPS2540/40A/41/41A supports the following
charging logic schemes:
• USB 2.0 BC1.2
• Chinese Telecom Standard YD/T 1591-2009
• Divider Mode, compliant with Apple devices such
as iPod^® and iPhone^®
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.
TPS2540/40A/41/41A RTE Package and Typical Application Diagram
IN
DM_OUT
DP_OUT
TPS2540/40A/41/41A
RTE Package
(Top View)
To System Bus
4.5 V to 5.5 V
TPS2540/40A/41/41A
1 IN
OUT 12
16 15 14 13
RFAULT
10 kW
0.1 mF
ILIM0 16
ILIM1 15
FAULT Signal
1
12 OUT
2
11 DM_IN
Exposed
Thermal Die
3
10 DP_IN
ILIM Select
Power Switch EN
13 FAULT
4 ILIM_SEL
5 EN/DSC
GND 14
DM_IN 11
ILIM_SEL 4
9 N/C
Mode Select I/O
6 CTL1
DP_IN 10
5678
Mode Select I/O
Mode Select I/O
7 CTL2
8 CTL3
DM_OUT 2
DP_OUT 3
To Peripheral
CUSB
2x
RILIM
VBUS
D-
D+
GND
To Host Controller
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.
Apple, iPod, iPhone are registered trademarks of Apple Inc.
2
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