LT1641-2

LT1641-1/LT1641-2 Positive High Voltage Hot Swap Controllers U U FEATURES ■ Allows Safe Board Insertion and Removal from a Live Backplane ■ Controls Supply Voltage from 9V to 80V ■ Programmable Analog Foldback Current Limiting ■ High Side Drive for an External N-Channel ■ Latched Operation Mode (LT1641-1) ■ Automatic Retry (LT1641-2) ■ User Programmable Supply Voltage Power-Up Rate ■ Undervoltage Lockout ■ Overvoltage Protection ■ Both are available in 8-Lead SO Package U APPLICATIO S ■ Hot Board Insertion ■ Electronic Circuit Breaker ■ Industrial High Side Switch/Circuit Breaker ■ 24V/48V Industrial/Alarm Systems DESCRIPTIO The LT®1641-1/LT1641-2 are 8-pin Hot SwapTM controllers that allow a board to be safely inserted and removed from a live backplane. Using an external N-channel pass transistor, the board supply voltage can be ramped up at a programmable rate. A high side switch driver controls an N-channel gate for supply voltages ranging from 9V to ...