LTC4232IDHC#PBF

LTC4232 is an integrated solution for hot swap applications that allows a board to be safely inserted and removed from a live backplane. The part integrates a hot swap controller, power MOSFET and current sense resistor in a single package for small form factor applications. It provides separate inrush current control and a 10% accurate 5A current limit with foldback current limiting. The current limit threshold can be adjusted dynamically using an external pin. Additional features include a current monitor output that amplifies the sense resistor voltage for ground referenced current sensing and a MOSFET temperature monitor output. It allows faster turn-on than the device by providing 16ms debounce delay and external control of the GATE ramp rate. It is widely used in applications such as RAID systems, solid state drives, server I/O cards, industrial etc.

• MOSFET + sense resistor on-resistance is 33Mohm typical at ( TA = 25°C, VDD = 12V)
• Wide operating voltage range is 9V to 15V
• Current and temperature monitor outputs
• Overtemperature protection
• Adjustable current limit timer before fault
• Power good and fault outputs, adjustable inrush current control
• 2% accurate undervoltage and overvoltage protection
• Input supply current is 1.6mA typ at (TA = 25°C, VDD = 12V)
• Operating ambient temperature is -40°C to 85°C
• Package style is 16-lead plastic DFN

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