LT4256-1CS8#PBF

LINEAR TECHNOLOGY  LT4256-1CS8#PBF  芯片, 热插拔控制器, 48V, 8SOIC

The is a positive high voltage Hot Swap Controller that allows 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 10.8 to 80V. It features an adjustable analog fold back current limit. If the supply remains in current limit for more than a programmable time, the N-channel MOSFET shuts off and the PWRGD output asserts low. The LT4256-1 latches off until the UV pin is cycled low. The PWRGD output indicates when the output voltage rises above a programmed level. An external resistor string from VCC provides programmable undervoltage protection.

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Allows safe board insertion and removal from a live backplane

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Foldback current limiting

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Overcurrent fault detection

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Drives an external N-channel MOSFET

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Programmable supply voltage power-up rate

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Undervoltage protection latch off operation mode

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Latch off operation mode