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LTC4281 Datasheet Hot Swap Controller

Manufacturer: Analog Devices

General Description

The LTC®4281 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 allows for monitoring of board current, voltage, power, energy and fault status.

Key Features

  • n Allows Safe Board Insertion Into Live Backplane n 12-/16-Bit ADC with ±0.9% Total Unadjusted Error n Monitors Current, Voltage, Power and Energy n Internal EEPROM for Nonvolatile Configuration n Wide Operating Voltage Range: 2.9V to 33V n I2C/SMBus Digital Interface (Coexists with PMBus Devices) n 12V Gate Drive for Lower MOSFET RDS(ON) n Programmable Current Limit with 2% Accuracy n MOSFET Power Limiting with Current Foldback n Continuously Monitors MOSFET Health n Stores Minimum and Maximum.

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LTC4281 Distributor