The LTC4218IDHC-12 is a Hot Swap controller that allows a board to be safely inserted and removed from a live backplane. An internal high side switch driver controls the gate of an external N-channel MOSFET for supply voltages from 2.9V to 26.5V. A dedicated 12V version (LTC4218-12) contains preset 12V specific thresholds, while the standard LTC4218IDHC-12 allows adjustable thresholds.
The LTC4218IDHC-12 provides an accurate (5%) current limit with current foldback limiting. The current limit threshold can be adjusted dynamically using an external pin. Additional features include a current monitor output that amplifies the sense voltage for ground referenced current sensing. Overvoltage, undervoltage and power good monitoring are also provided.
Feature
- Wide Operating Voltage Range: 2.9V to 26.5V
- Adjustable, 5% Accurate 15mV Current Limit
- Current Monitor Output
- Adjustable Current Limit Timer Before Fault
- Power Good and Fault Outputs
- Adjustable Inrush Current Control
- 2% Accurate Undervoltage and Overvoltage Protection
- Available in 16-Lead SSOP and 16-Pin 5mm × 3mm DFN Packages
Applications
- RAID Systems
- ATCA, AMC, μTCA Systems
- Server I/O Cards
- Industrial
(Picture: Pinout)
