UCS1001-3 UCS1001-4 USB Port Power Controller with Charger Emulation Datasheet PRODUCT FEATURES General Description Features Port power switch with two current limit behaviors The UCS1001 provides a USB port power switch for 2.9 V to 5.5 V source voltage range precise control of up to 2.5 amperes continuous current Up to 2.5 A current with 55 m On Resistance with over-current limit (OCL), dynamic thermal Over-current trip or constant current limiting management, latch or auto-recovery (low test current) Soft turn-on circuitry fault handling, selectable active low or high enable, Selectable current limit under- and over-voltage lockout, back-drive protection, Dynamic thermal management and back-voltage protection. Under- and over-voltage lockout Back-drive, back-voltage protection Split supply support for VS and VDD is an option for low Latch or auto-recovery (low test current) fault handling power in system standby states. This gives battery Selectable active high or low power switch enable operated applications, like notebook PCs, the ability to BC1.2 VBUS discharge port renegotiation function detect attachments from a sleep or off state. After the Selectable / automatic cycling of USB data line Attach Detection is flagged, the system can decide to charger emulation profiles wake up and/or provide charging. Employs unique method and system for sampling In addition to power switching and current limiting multiple profiles* UCS1001-3 and UCS1001-4 supports 12W charger modes, the UCS1001 will automatically charge a wide emulation variety of portable devices, including USB-IF BC1.2, Allows for active cables YD/T-1591 (2009), most Apple and RIM , and many USB-IF BC1.2 charging downstream port (CDP) & others. Nine preloaded charger emulation profiles dedicated charging port (DCP) modes, YD/T-1591, and maximize compatibility coverage of peripheral devices. most Apple and RIM protocols standard USB 2.0 compliant high-speed data switch (in Pass- The UCS1001 is available in a 20-pin QFN 4 mm x through and CDP modes) 4 mm package. Nine preloaded charger emulation profiles for maximum compatibility coverage of peripheral devices Applications Charging Active (UCS1001-3) or Attach Detection Notebook and Netbook Computers (UCS1001-4) open-drain output Tablets and E-book readers Ultra low power Sleep state Desktops and Monitors Optional split supply support for VBUS and VDD for Docking Stations and Printers low power in system standby states AC-DC wall adapters 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 Revision 1.4 (07-16-13) DATASHEETUSB Port Power Controller with Charger Emulation Datasheet Block Diagram DPIN DPOUT USB 2.0 HS Data Switch & Charger Emulator DMOUT DMIN VDD VDD Attach Detector VS VBUS UVLO, GND Power OVLO Switch ILIM ALERT CHRG (UCS1001-1 only) A DET (UCS1001-2 only) VDD PWR EN Interface, Temp SEL Charger Control, Logic Measurement, EM EN OCL M1 M2 S0 LATCH Revision 1.4 (07-16-13) 2 SMSC UCS1001 DATASHEET