• 3.0A continuous current per VBUS port with 40 mO On resistance per switch
• Independent port power switch enable pins
• Dual fault ALERT# active drain output pins
• Constant Current or Trip mode current limiting behaviors
• Undervoltage, overvoltage lockout, back-drive, back-voltage protection
• Auto-recovery fault handling with low test current
• BOOST# logic output to increase DC-DC converter output under large load conditions
• A_DET# open-drain outputs for device attach detection per port
• Eight programmable current limits assignable to each power switch
• Other SMBus addresses available upon request
• Block read and block write
• 4x4 mm 20-pin QFN
• Self-contained current monitoring (no external sense resistor required)
• Fully programmable per-port charge rationing and behaviors
• Per-port BC1.2 VBUS Discharge Function
• -40°C to +105°C
• UL recognized and EN/IEC 60950-1 (CB) Certified

The UCS2112 is a dual USB port power switch configuration which can provide 3.0A continuous current (3.4A maximum) per VBUS port.  The UCS2112 is well suited for both stand-alone and applications having SMBus/I2C communications. 

For applications with SMBus, the UCS2112 provides per-port current monitoring and eight programmable current limits per switch, ranging from 0.53A to 3.0A continuous current (3.4A maximum). Per-port charge rationing is also provided ranging from 3.8 mAh to 246.3 Ah. 

In Stand-alone mode, the UCS2112 provides eight current limits for both switches, ranging from 0.53A + 0.53A to 3A + 3A total continuous current.
Both power switches include an independent VBUS discharge function and constant current mode current limiting for BC1.2 applications.