UCS2114 USB Dual-Port Power Switch and Current Monitor Features Description Dual-Port Power Switches: The UCS2114 is a dual USB port power switch configuration that can provide 3.0A continuous current - 2.9V to 5.5V source voltage range (3.4A maximum) per V port with precision BUS port with - 3.0A continuous current per V BUS overcurrent limiting (OCL), port power switch enables, 18 m On resistance per switch auto-recovery fault handling, undervoltage and - Independent port power switch enable pins overvoltage lockout, back-drive and back-voltage - DUAL fault ALERT active drain output pins protection, and thermal protection. - Constant Current or Trip mode current The UCS2114 is well-suited for both stand-alone and limiting behaviors 2 C communications. applications having SMBus/I - Undervoltage and overvoltage lockout For applications with SMBus, the UCS2114 provides - Back-drive, back-voltage protection per-port current monitoring and eight programmable - Auto-recovery fault handling with low test current limits per switch, ranging from 0.53A to 3.0A current continuous current (3.4A maximum). Per-port charge - BOOST logic output to increase DC-DC rationing is also provided, ranging from 3.8 mAh to converter output under large load conditions 246.3 Ah. 2 SMBus 2.0/I C Mode Features: In Stand-Alone mode, the UCS2114 provides eight - Eight programmable current limits assignable current limits for both switches, ranging from to each power switch 0.53A+0.53A to 3A+3A total continuous current - Other SMBus addresses available upon (see Table 1-1). request Both power switches include an independent V BUS - Block read and block write discharge function and Constant Current mode limiting for BC1.2 applications. Self-Contained Current Monitoring (No External Sense Resistor Required) The UCS2114 is available in a 3x3 mm 20-pin VQFN Fully Programmable Per-Port Charge Rationing package. and Behaviors Discharge Configurable Per-Port BC1.2 V Package Type BUS Function UCS2114 Wide Operating Temperature Range: 3x3 VQFN - 40C to +105C 20 19 18 17 16 PWR EN1 PWR EN2 1 15 14 GND GND 2 13 BOOST COMM ILIM 3 12 V V BUS1 4 BUS2 11 V V 5 BUS2 BUS1 678 9 10 2017 Microchip Technology Inc. DS20005743A-page 1 ALERT 1 V S SMCLK V S SMDATA V DD GND V S ALERT 2 V SUCS2114 Block Diagram V BUS V S Power Switch 1 UVLO, OVLO V S V BUS Power Switch 2 VBUS PWR EN1 discharge ALERT 1 Charger Control, Temp Measurement, PWR EN2 OCL BOOST ALERT 2 V DD COMM ILIM SMCLK SMDATA GND DS20005743A-page 2 2017 Microchip Technology Inc. Interface Logic