DESCRIPTION
The LTC®1421/LTC1421-2.5 are Hot SwapTM controllers that allow a board to be safely inserted and removed from a live backplane. Using external N-channel pass transistors, the board supply voltages can be ramped up at a programmable rate. Two high side switch drivers control the N-channel gates for supply voltages ranging from 3V to 12V.

FEATURES
■ Allows Safe Board Insertion and Removal from a
   Live Backplane
■ System Reset and Power Good Control Outputs
■ Programmable Electronic Circuit Breaker
■ User Programmable Supply Voltage Power-Up Rate
■ High Side Driver for Two External N-Channels
■ Controls Supply Voltages from 3V to 12V
■ Connection Inputs Detect Board Insertion or Removal
■ Undervoltage Lockout
■ Power-On Reset Input

APPLICATIONS
■ Hot Board Insertion
■ Electronic Circuit Breaker