Linear Technology LT4256-1
Positive High Voltage Hot Swap Controllers
FEATURES
● Allows Safe Board Insertion and Removal from a Live Backplane● Controls Supply Voltage from 10.8V to 80V
● Foldback Current Limiting
● Overcurrent Fault Detection
● Drives an External N-Channel MOSFET
● Programmable Supply Voltage Power-Up Rate
● Undervoltage Protection
● Latch Off Operation Mode (LT4256-1)
● Automatic Retry (LT4256-2)
● Available in an 8-Pin SO Package U APPLICATIO S
● Hot Board Insertion
● Electronic Circuit Breaker/Power Bussing
● Industrial High Side Switch/Circuit Breaker
● 24V/48V Industrial/Alarm Systems
● Ideally Suited for 12V, 24V and 48V Distributed Power Systems
● 48V Telecom Systems DESCRIPTIO The LT®4256-1/LT4256-2 are high voltage Hot SwapTM controllers that allow a board to be safely inserted and removed from a live backplane. An internal driver drives an external N-channel MOSFET switch to control supply voltages ranging from 10.8V to 80V. T