UCS1002-1 Datasheet, PDF (1/116 Pages) SMSC Corporation – Programmable USB Port Power Controller with Charger Emulation

UCS1002-1
Programmable USB Port Power Controller
with Charger Emulation
PRODUCT FEATURES
Datasheet
General Description
The UCS1002 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 UCS1002 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.
As well, a customizable charger emulation profile is
available to accommodate unique existing and future
portable device handshaking / signature requirements.
This custom profile uses a unique stimulus and
response method referenced below.*
The UCS1002 also provides current monitoring to allow
intelligent management of system power and a Battery
Full option for controlled delivery of current regardless
of the host power state. This is especially important for
battery operated applications that want to provide power
in a standby and/or off state but do not want to drain the
battery excessively.
The UCS1002 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
— Programmable 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
— Customizable emulation profile uses a unique stimulus
and response method useful for future profiles*
— Supports 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; others as
defined via the SMBus 2.0 / I²C^®
— 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
— One custom programmable charger emulation profile
for portable device support for fully host controlled
charger emulation
 Fault Alert open-drain output
 Self-contained current monitoring
 Low power Attach Detection and open-drain A_DET#
pin
 Ultra low power Sleep state
 Optional split supply support for VBUS and VDD for
low power in system standby states
 Wake on Attach USB
 SMBus 2.0 / I²C communications
— Supports Block Write and Read
— Multiple SMBus addresses
 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 UCS1002
DATASHEET
Revision 1.4 (07-16-13)