Low On Resistance Hot Swap Power Manager

The UCC3918 Low on Resistance Hot Swap Power Manager provides complete Power Management Hot Swap capability, and circuit breaker functions. The only components needed to operate the device, other than supply bypassing, are a tim- ing capacitor, and 2 programming resistors. All control and housekeeping functions are integrated, and externally programmable. These include the fault current level, maximum output sourcing current, maximum fault time, and startup delay. In the event of a constant fault, the internal fixed 3% duty cycle ratio limits the average output power. The IFAULT pin allows linear programming of the fault level current from 0A to 4A. Fast overload protection is accomplished by an additional overload Comparator Its threshold is internally set above the maximum sourcing current limit setting. In the event of a short circuit or extreme current condition, this Comparator is tripped, shutting down the output. This function is needed since the maximum sourcing cur- rent limit loop has a finite bandwidth. When the output current is below the fault level, the output MOSFET is switched on with a nominal resistance of 0.06. When the output current exceeds the fault level or the maximum sourcing level, the output remains on, but the fault Timer starts charging CT. Once CT charges to a preset threshold, the Switch is turned off, and remains off for 30 times the programmed fault time. When the output current reaches the maximum sourcing level, the MOSFET transitions form a Switch to a constant current source. By Texas Instruments
UCC2918 's PackagesUCC2918 's pdf datasheet



UCC2918 Pinout, Pinouts
UCC2918 pinout,Pin out
This is one package pinout of UCC2918,If you need more pinouts please download UCC2918's pdf datasheet.

UCC2918 Application circuits
UCC2918 circuits
This is one application circuit of UCC2918,If you need more circuits,please download UCC2918's pdf datasheet.


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