UCS2112 Datasheet | Microchip Technology

Features - Dual-Port Power Switches: - 2.9V to 5.5V source voltage range - 3.0A continuous current per VBUS port with 40 m 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 and 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 - SMBus 2.0/I2C™ Mode Features : - Eight programmable current limits assignable to each power switch - Other SMBus addresses available upon request - Block read and block write - Self-contained current monitoring (no external sense resistor required) - Fully programmable per-port charge rationing and behaviors - Per-port BC1.2 VBUS Discharge Function - Wide Operating Temperature Range: - -40°C to +105°C - UL recognized and EN/IEC 60950-1 (CB) certified. Description The UCS2112 is a dual USB port power switch configuration which can provide 3.0A continuous current (3.4A maximum) per VBUS port with precision overcurrent limiting (OCL), port power switch enables, auto-recovery fault handling, undervoltage and overvoltage lockout, back-drive protection and back-voltage protection, and dynamic thermal management. The UCS2112 is well suited for both stand-alone and applications having SMBus/I2C munications. 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 m Ah 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 (see Table 1-1). Both power switches include an independent VBUS discharge function and...