Description
The SC4250 is a negative voltage hotswap controller that allows the insertion of line cards into a live backplane.

Features
◆ Programmable slew of the inrush current when used for hot insertion in the negative 24V and 48V backplane
◆ Closed loop operation limits the maximum current even in short circuit condition
◆ Built in timer prevents false shutdown when the closed loop operation limits the current
◆ Sensing the drain voltage allows for immediate shutdown in short circuit conditions where current spikes and noise are ignored
◆ Power good signal
◆ Input UVLO and OVLO sensing
◆ Circuit breaker and retry
◆ SO-8 package

Applications
◆ Central office switching
◆ -48V Distributed power systems
◆ Power supply hotswap & inrush control