DESCRIPTION
The LTC®4214 negative voltage Hot SwapTM controller allows a board to be safely inserted and removed from a live backplane. Output current is controlled by three stages of current limiting: a timed circuit breaker, active current limiting and a fast feedforward path that limits peak current under worst-case catastrophic fault conditions.

FEATURES
■ Allows Safe Board Insertion and Removal from a Live Backplane
■ Controls Supplies from 0V to –16V
■ Adjustable Analog Current Limit With Circuit Breaker Timer
■ Fast Response Time Limits Peak Fault Current
■ Adjustable Soft-Start Current Limit
■ Adjustable Timer with Drain Voltage Accelerated Response
■ Adjustable Undervoltage/Overvoltage Protection
■ LTC4214-1: Latch Off After Fault
■ LTC4214-2: Automatic Retry After Fault
■ Available in the 10-Pin MSOP Package

APPLICATIONS
■ Hot Board Insertion
■ Electronic Circuit Breaker
■ Negative Power Supply Control
■ Central Office Switching
■ High Availability Servers
■ Disk Arrays
■ Optical Networking/Switching
■ ECL