UCS1003-1 Datasheet, PDF (1/138 Pages) Microchip Technology – USB Port Power Controller with Charger Emulation

UCS1003-1/2/3
USB Port Power Controller with Charger Emulation
Features
• Port Power Switch with Two Current Limit Behaviors:
- 2.9V to 5.5V source voltage range
- Up to 3.0A current (2.85A typical) with 55 m
on resistance
- Overcurrent trip or Constant-Current Limiting
- Soft turn-on circuitry
- Selectable current limit
- UCS1003-1 has programmable current limit via
the SMBus 2.0/I²C protocol
- Dynamic thermal management
- Undervoltage Lockout (UVLO) and Overvoltage
Lockout (OVLO)
- Backdrive, back-voltage protection
- Latch or auto-recovery (low test current) Fault handling
- Selectable active-high or active-low power
switch enable
- BC1.2 V_BUS discharge port renegotiation function
• Selectable/Automatic Cycling of Universal Serial Bus
(USB) Data Line Charger Emulation Profiles:
- USB-IF BC1.2 Charging Downstream Port (CDP)
and Dedicated Charging Port (DCP) modes,
Chinese Telecommunications Industry Standard
YD/T 1591-2009 and most Apple^® Inc.,
Samsung and RIM^® protocols standard
- UCS1003-1 supports other charger emulation
profiles as defined via the SMBus 2.0/I²C protocol
- Supports 12W charging emulation
- USB 2.0 compliant high-speed data switch (in
Data Pass-Through, SDP and CDP modes)
- Nine preloaded charger emulation profiles for
maximum compatibility coverage of the
peripheral devices
- UCS1003-1 has one custom programmable
charger emulation profile for portable device
support for fully host-controlled charger emulation
• Supports Active Cables
• UCS1003-1 Supports Self-Contained Current Monitoring
and Rationing for Power Allocation Applications
• UCS1003-1 and UCS1003-3 have Low-Power
Attach Detection and Open-Drain (A_DET#) Pin
• UCS1003-2 has Charging Active (CHRG#)
Open-Drain Pin
• Ultra Low-Power Sleep State
• Optional Split Supply Support for V_S and V_DD for
Low Power in System Standby States
• Wake on Attach USB (UCS1003-1 and UCS1003-3)
• UCS1003-1 Supports 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 Electrostatic Discharge (ESD)
Immunity
• UL Recognized and EN/IEC 60950-1 (CB) Certified
Description
The UCS1003-1/2/3 family of devices provides a USB
port power switch for precise control of up to 3.0A
continuous current (2.85A typical) with Overcurrent
Limit (OCL), dynamic thermal management, latch or
auto-recovery (low test current) Fault handling, select-
able active-high or active-low enable, Undervoltage
and Overvoltage Lockout, backdrive protection and
back-voltage protection.
Split supply support for V_S and V_DD is an option for low
power in system standby states. This gives battery-
operated applications (such as on-board computers) 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 UCS1003-1/2/3 will automatically charge a
wide variety of portable devices, including USB-IF
BC1.2, YD/T-1591 (2009), most Apple Inc., Samsung,
RIM and many others. Nine preloaded charger emula-
tion profiles maximize the compatibility coverage of the
peripheral devices. Additionally, a customizable
charger emulation profile is available in UCS1003-1 to
accommodate unique existing and future portable
device handshaking/signature requirements.
The UCS1003-1 also provides current monitoring to
allow intelligent management of system power and
charge rationing for controlled delivery of current, regard-
less of the host power state. This is especially important
for battery-operated applications that want to provide
power and do not want to drain the battery excessively.
The UCS1003-1/2/3 family is available in a
4 mm x 4 mm 20-pin QFN package.
Applications
• Notebook and Netbook Computers
• Tablets and E-Book Readers
• Desktops and Monitors
• Docking Stations and Printers
• AC-DC Wall Adapters
 2014-2015 Microchip Technology Inc.
DS20005346B-page 1