LTC4232IDHC-1#PBF

LTC4232-1 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. Thermal limit, overvoltage, undervoltage and power good monitoring are also provided. It is used in applications such as RAID systems, solid state drives, server I/O cards, PCI express systems, industrial.

• MOSFET + sense resistor on-resistance is 33Mohm typ at (TA = 25°C, VDD = 12V)
• Wide operating voltage range from 2.9V to 15V
• Adjustable, 10% accurate current limit
• 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
• Pin compatible with LTC4217
• Input supply current is 1.6mA typ at (TA = 25°C, VDD = 12V)
• Operating temperature range from -40°C to 85°C
• Package style is 16-lead plastic DFN

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