GENERAL DESCRIPTION
The ADM1172 is a hot swap controller that safely enables a printed circuit board to be removed and inserted to a live backplane. This is achieved using an external N-channel power MOSFET with a current control loop that monitors the load current through a sense resistor. An internal charge pump is used to enhance the gate of the N-channel FET. When an overcurrent condition is detected, the gate voltage of the FET is reduced to limit the current flowing through the sense resistor.

FEATURES
   Controls supply rails from 2.7 V to 16.5 V
   Allows protected board removal and insertion to a live
      backplane
   External sense resistor provides adjustable analog current
      limit with circuit breaker
   Peak fault current limited with fast response
   Charge pumped gate drive for external N-FET switch
   Power-fail comparator
   Automatic retry or latch-off during current fault
   Undervoltage lockout
   8-lead, TSOT package

APPLICATIONS
   Hot swap board insertion: line cards, raid systems
   Industrial high-side switches/circuit breakers
   Electronic circuit breakers