Latchable Negative Floating Hot Swap Power Manager

The UCC3921 family of negative floating Hot Swap UCC1921 UCC2921 UCC3921 power managers pro- vides complete Power Management Hot Swap and fault handling capa- bility. The IC is referenced to the negative input voltage and is powered through an external resistor connected to ground, which is essentially a current drive as opposed to the traditional voltage drive. The onboard 10V Shunt Regulator protects the IC from excess voltage and serves as a reference for programming the maximum allowable output sourcing cur- rent during a fault. All control and housekeeping functions are integrated and externally programmable. These include the fault current level, maxi- mum output sourcing current, maximum fault time, selection of Retry or Latched mode, soft start time, and average power limiting. In the event of a constant fault, the internal Timer will limit the on time from less than 0.1% to a maximum of 3% duty cycle. The duty cycle modulation de- pends on the current into PL, which is a function of the voltage across the FET thus limiting average power dissipation in the FET By Texas Instruments
UCC1921 's PackagesUCC1921 's pdf datasheet

UCC1921 Pinout, Pinouts
UCC1921 pinout,Pin out
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