TPS2546 Datasheet, PDF (1/40 Pages) Texas Instruments – USB Charging Port Controller and Power Switch with Load Detection

TPS2546
www.ti.com
SLVSBJ2A – FEBRUARY 2013 – REVISED FEBRUARY 2013
USB Charging Port Controller and Power Switch with Load Detection
Check for Samples: TPS2546
FEATURES
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• D+/D– CDP/DCP Modes per USB Battery
Charging Specification 1.2
• D+/D– Shorted Mode per Chinese
Telecommunication Industry Standard YD/T
1591-2009
• Supports non-BC1.2 Charging Modes by
Automatic Selection
– D+/D– Divider Modes 2.0V/2.7V and 2.7/2.0V
– D+/D- 1.2V Mode
• Supports Sleep-Mode Charging and
Mouse/Keyboard Wake Up
• Automatic SDP/CDP Switching for Devices
That do not Connect to CDP Ports
• Load Detection for Power Supply Control in
S4/S5 Charging and Port Power Management
in all Charge Modes
• Compatible with USB 2.0 and 3.0 Power Switch
requirements
• Integrated 73-mΩ (typ) High-Side MOSFET
• Adjustable Current-Limit up to 3 A (typ)
• Operating Range: 4.5 V to 5.5 V
• Max Device Current
– 2 µA When Device Disabled
– 270 µA When Device Enabled
• Drop-In and BOM Compatible with TPS2543
• Available in 16-Pin QFN (3x3) Package
• 8KV ESD Rating on DM/DP Pins
• UL Listed and CB File No. E169910
APPLICATIONS
• USB Ports (Host and Hubs)
• Notebook and Desktop PCs
• Universal Wall Charging Adapters
DESCRIPTION
The TPS2546 is a USB charging port controller and
power switch with an integrated USB 2.0 high-speed
data line (D+/D–) switch. TPS2546 provides the
electrical signatures on D+/D– to support charging
schemes listed under device feature section. TI tests
charging of popular mobile phones, tablets and media
devices with the TPS2546 to ensure compatibility with
both BC1.2 compliant and non-BC1.2 compliant
devices
In addition to charging popular devices, the TPS2546
also supports two distinct power management
features, namely, power wake and port power
management (PPM) via the STATUS pin. Power
wake allows for power supply control in S4/S5
charging and PPM the ability to manage port power in
a multi-port application. Additionally, system wake up
(from S3) with a mouse/keyboard (both low speed
and full speed) is fully supported in the TPS2546
The TPS2546 73-mΩ power-distribution switch is
intended for applications where heavy capacitive
loads and short-circuits are likely to be encountered.
Two programmable current thresholds provide
flexibility for setting current limits and load detect
thresholds.
TPS2546 RTE PACKAGE AND TYPICAL APPLICATION DIAGRAM
16 15 14 13
IN 1
DM_OUT 2
DP_OUT ³
ILIM_SEL ⁴
Thermal Pad
12 OUT
11 DM_IN
10 DP_IN
9 STATUS
To Portable Device à
Power Bus ^{4.5V – 5.5V}
0.1 uF
IN
OUT
RSTATUS
(10 kW)
RFAULT
(10 kW)
TPS2546
ILIM_LO
ILIM_HI
STATUS Signal
Fault Signal
STATUS
FAULT
RILIM_HI
GND
CUSB
RILIM_LO
VBUS
D-
D+
GND
ILIM Select
Power Switch EN
Mode Select I/O
ILIM_SEL
EN
CTL1
CTL2
CTL3
DM_IN
DP_IN
DM_OUT
DP_OUT
USB
Connector
To Host Controller à
5678
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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 © 2013, Texas Instruments Incorporated