GENERAL DESCRIPTION
The ADM1070 is a negative voltage hot swap controller that allows a board to be safely inserted and removed from a live –48 V backplane. The part achieves this by providing robust current limiting, protection against transient and nontransient short circuits and overvoltage and undervoltage conditions. The ADM1070 typically operates from a negative voltage of up to –80 V and can tolerate transient voltages of up to –200 V.

FEATURES
   Allows Safe Board Insertion and Removal from a Live
      –48 V Backplane
   Typically Operates from –36 V to –80 V
   Tolerates Transients up to –200 V (Limited by External
      Components)
   Accurate Programmable Linear Current Limit for
      In-Rush Control and Short Circuit Protection
   Programmable Timeout in Current Limit
   Limited Consecutive Retry:
      Auto-Restart after Current Limit Timeout
      Shutdown after Seven Consecutive Auto Restarts
      Provides Immunity from Step Induced Current Spikes
   Default Timing Provided with no TIMER Capacitor
   Single Pin Undervoltage/Overvoltage Detection
   Programmable Operating Voltage Window
   Programmable Undervoltage/Overvoltage Time Filter
   Small 6-Lead SOT-23 Package

APPLICATIONS
   Central Office Switching
   –48 V Distributed Power Systems
   Negative Power Supply Control
   Hot Board Insertion
   Electronic Circuit Breaker
   High Availability Servers
   Programmable Current Limiting Circuit
   –48 V Power Supply Modules