UCS1002-1-BP-TR

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.

• 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 mO 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