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