TPS2540 Datasheet, PDF (1/37 Pages) Texas Instruments – USB Charging Port Power Switch and Controller

TPS2540
TPS2541
www.ti.com
USB Charging Port Power Switch and Controller
Check for Samples: TPS2540 , TPS2541
SLVSAG2 – OCTOBER 2010
FEATURES
1
•2 Meets Battery Charging Specification BC1.2
(draft) 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 (draft)
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)
or DSC (TPS2541) Input
• Available in 16-Pin QFN Package
APPLICATIONS
• USB Ports/Hubs
• Notebook PCs
• Universal Wall Charging Adapter
DESCRIPTION
The TPS2540 and TPS2541 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 TPS2540/41 monitors
D+ and D-, providing the correct hand-shaking
protocol with compliant client devices.
The TPS2540/41 supports the following charging
logic schemes:
• USB 2.0 BC1.2 (draft)
• 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 and
TPS2541. 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
TPS2540/41 also integrates an auto-detect feature
that supports both DCP schemes for Battery
Charging Specification (BC1.2 (draft)) and the Divider
Mode without the need for outside user interaction.
TPS2540/41 RTE Package and Typical Application Diagram
IN 1
DM_OUT 2
DP_OUT 3
ILIM_SEL 4
TPS2540/41
RTE Package
(Top View)
16 15 14 13
Exposed
Thermal Die
5678
12 OUT
11 DM_IN
10 DP_IN
9 N/C
To System Bus
4.5 V to 5.5 V
FAULT Signal
1 IN
R_FAULT
10 kW
0.1 mF
OUT 12
TPS2540
ILIM0 16
ILIM1 15
13 FAULT
ILIM Select
4 ILIM_SEL
GND 14
Power Switch EN
5 EN
DM_IN 11
Mode Select I/O
6 CTL1
DP_IN 10
Mode Select I/O
7 CTL2
DM_OUT 2
Mode Select I/O
8 CTL3
DP_OUT 3
To Peripheral
C_USB
2x
R_ILIM
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, Texas Instruments Incorporated