LTC4215CUFD#PBF

LINEAR TECHNOLOGY  LTC4215CUFD#PBF  芯片, 热插拔控制器, 15V, 内部开关, 24QFN

The is a Hot Swap Controller allows a board to be safely inserted and removed from a live backplane. Using an external N-channel pass transistor, board supply voltage and inrush current are ramped up at an adjustable rate. An I²C interface and onboard ADC allow for monitoring of load current, voltage and fault status. The device features adjustable foldback current limit and a soft-start pin that sets the dI/dt of the inrush current. An I²C interface may configure the part to latch off or automatically restart after the LTC4215 detects a current limit fault. The controller has additional features to interrupt the host when a fault has occurred, notify when output power is good, detect insertion of a load card and power-up either automatically upon insertion or wait for an I²C command to turn on. It has a 20µs circuit breaker filter for applications that require a fast fault response time and it defaults to latch-off after an overcurrent fault.

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8-bit ADC monitors current and voltage

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dI/dt Controlled soft-start

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High side drive for external N-channel MOSFET

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No external gate capacitor required

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Input overvoltage/undervoltage protection

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Optional latch off or auto-retry after faults

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Alerts host after faults

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Inrush current limit with foldback