Texas Instruments UCC3918 0-4A, 3-6V Low RDSON Single Hot-Swap IC Hi-Side MOSFET, Comm. Temp. UCC3918DPG4

The UCC3918DPG4 is a low on-resistance hot-swap power management IC designed for applications requiring unidirectional current flow. It operates within a voltage range of 3 V to 6 V and can handle output currents up to 4 A. The device features an integrated 0.075-,Ѷ power MOSFET, which minimizes power loss during operation. Key functionalities include external analog control for fault current and maximum output sourcing current, as well as fast overload protection through an internal comparator. The UCC3918 also incorporates programmable parameters such as on-time, startup delay, and fault time, allowing for flexible integration into various designs. In terms of power management, the IC supports a fixed 3% duty cycle during fault conditions to limit average output power. It includes features like thermal shutdown, undervoltage lockout, and a low sleep mode current of 1 ¬µA when disabled. The device is packaged in a 16-pin SOIC format and is suitable for commercial temperature applications ranging from 0¬8C to 70¬8C.