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Description

The UCS2113-C is a dual USB port power switch

configuration which can provide 3A continuous current

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

thermal protection.

The UCS2113-C is well suited for both stand-alone and

applications having SMBus/I2C communications.

For applications with SMBus, the UCS2113-C provides

per-port current monitoring and three programmable

current limits per switch, ranging from 3.5A to 5.2A.

Per-port charge rationing is also provided ranging from

3.8 mAh to 246.3 Ah.

In stand-alone mode, the UCS2113-C provides three

current limits for both switches, ranging from

3.5A + 3.5A to 5.2A + 5.2A (see Table 1-1).

Both power switches include an independent VBUS

discharge function.

The UCS2113-C is available in a 4x4 mm 20-pin QFN package.

Features

? Dual-Port Power Switches:

- 2.9V to 5.5V source voltage range

- 3A 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

- Trip mode current limiting behavior

- 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

? SMBus 2.0/I2C Mode Features:

- Three 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

? Automatic VBUS Discharge Function

? Wide Operating Temperature Range:

- -40°C to +105°C

? Passes Automotive AEC-Q100 Reliability Testing