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PDF UCS1001-3 Data sheet ( Hoja de datos )

Número de pieza UCS1001-3
Descripción USB Port Power Controller
Fabricantes SMSC Corporation 
Logotipo SMSC Corporation Logotipo



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UCS1001-3 UCS1001-4
USB Port Power Controller with Charger Emulation
PRODUCT FEATURES
Datasheet
General Description
The UCS1001 provides a USB port power switch for
precise control of up to 2.5 amperes continuous current
with over-current limit (OCL), dynamic thermal
management, latch or auto-recovery (low test current)
fault handling, selectable active low or high enable,
under- and over-voltage lockout, back-drive protection,
and back-voltage protection.
Split supply support for VS and VDD is an option for low
power in system standby states. This gives battery
operated applications, like notebook PCs, the ability to
detect attachments from a sleep or off state. After the
Attach Detection is flagged, the system can decide to
wake up and/or provide charging.
In addition to power switching and current limiting
modes, the UCS1001 will automatically charge a wide
variety of portable devices, including USB-IF BC1.2,
YD/T-1591 (2009), most Apple® and RIM®, and many
others. Nine preloaded charger emulation profiles
maximize compatibility coverage of peripheral devices.
The UCS1001 is available in a 20-pin QFN 4 mm x
4 mm package.
Applications
Notebook and Netbook Computers
Tablets and E-book readers
Desktops and Monitors
Docking Stations and Printers
AC-DC wall adapters
Features
Port power switch with two current limit behaviors
— 2.9 V to 5.5 V source voltage range
— Up to 2.5 A current with 55 mΩ On Resistance
— Over-current trip or constant current limiting
— Soft turn-on circuitry
— Selectable current limit
— Dynamic thermal management
— Under- and over-voltage lockout
— Back-drive, back-voltage protection
— Latch or auto-recovery (low test current) fault handling
— Selectable active high or low power switch enable
— BC1.2 VBUS discharge port renegotiation function
Selectable / automatic cycling of USB data line
charger emulation profiles
— Employs unique method and system for sampling
multiple profiles*
— UCS1001-3 and UCS1001-4 supports 12W charger
emulation
— Allows for active cables
— USB-IF BC1.2 charging downstream port (CDP) &
dedicated charging port (DCP) modes, YD/T-1591, and
most Apple and RIM protocols standard
— USB 2.0 compliant high-speed data switch (in Pass-
through and CDP modes)
— Nine preloaded charger emulation profiles for maximum
compatibility coverage of peripheral devices
Charging Active (UCS1001-3) or Attach Detection
(UCS1001-4) open-drain output
Ultra low power Sleep state
Optional split supply support for VBUS and VDD for
low power in system standby states
Wake on Attach USB (UCS1001-4)
Wide operating temperature range: -40 °C to +85 °C
IEC61000-4-2 8 / 15 kV ESD immunity
UL recognized and EN/IEC 60950-1 (CB) certified
* Unique technology covered under the following US patents pending: 13/109,446; 13/149,529; 13/173,287; 13/233,949; 13/157,282;
12/978,371; 13/232,965.
SMSC UCS1001
DATASHEET
Revision 1.4 (07-16-13)

1 page




UCS1001-3 pdf
USB Port Power Controller with Charger Emulation
Datasheet
6.4 VBUS Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
6.5 Fault Handling Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
6.5.1 Auto-recovery Fault Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
6.5.2 Latched Fault Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Chapter 7 Detect State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
7.1 Device Attach / Removal Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
7.2 VBUS Bypass Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
7.3 Attach Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
7.4 Removal Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Chapter 8 Active State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
8.1 Active State Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
8.2 Active Mode Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
8.3 BC1.2 Detection Renegotiation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
8.4 Data Pass-through (No Charger Emulation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
8.5 BC1.2 SDP (No Charger Emulation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
8.6 BC1.2 CDP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
8.6.1 BC1.2 CDP Charger Emulation Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
8.7 BC1.2 DCP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
8.7.1 BC1.2 DCP Charger Emulation Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
8.8 Dedicated Charger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
8.8.1 Emulation Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
8.8.2 Emulation Cycling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
8.8.3 DCE Cycle Retry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
8.9 Current Limit Mode Associations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
8.10 Preloaded Charger Emulation Profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
8.10.1 Legacy 1 Charger Emulation Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
8.10.2 Legacy 2, 4, 5, and 7 Charger Emulation Profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
8.10.3 Legacy 3 Charger Emulation Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
8.10.4 Legacy 6 Charger Emulation Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Chapter 9 Package Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Chapter 10 Typical Operating Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Chapter 11 Document Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
SMSC UCS1001
5
DATASHEET
Revision 1.4 (07-16-13)

5 Page





UCS1001-3 arduino
USB Port Power Controller with Charger Emulation
Datasheet
M1
M2
VBUS1
VBUS2
ILIM
1
2
3
4
5
UCS1001-4
20-QFN 4mm x 4mm
15 DMIN
14 DPIN
13 ALERT#
12 S0
11 LATCH
GND FLAG
Figure 2.2 UCS1001-4 Pin Diagram
The pin types are described in Table 2.2. All pins are 5 V tolerant.
PIN
NUMBER
1
2
3
4
5
6
7
8
PIN NAME
M1
M2
VBUS1
VBUS2
ILIM
SEL
VS1
VS2
Table 2.1 UCS1001 Pin Description
PIN FUNCTION
Active mode selector input #1
Active mode selector input #2
Voltage output from Power Switch.
These pins must be tied together.
Selects the maximum current limit at
power-up
Selects polarity of PWR_EN control
Voltage input to Power Switch.
These pins must be tied together.
PIN TYPE
DI
DI
Hi-Power,
AIO
Note 2.1
AIO
DI
Hi-Power,
AIO
IF PIN NOT USED
CONNECTION
Connect to ground
or VDD (see
Note 2.2)
Connect to ground
or VDD (see
Note 2.2)
Leave open
n/a
n/a
Connect to ground
SMSC UCS1001
11
DATASHEET
Revision 1.4 (07-16-13)

11 Page







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