The ISL6121 is a single supply Overcurrent (OC) fault protection IC for 2.5V to 5V applications where 2A current limiting is desired. This device features internal current monitoring and limiting along with a 50mΩ integrated power switch and a current limited time out to latch-off feature for system protection. The time to latch-off is independent of device temperature, and magnitude of OC.

Features
• 0.05Ω Integrated Power N-channel MOSFET Switch
• Accurate Current Sensing and Limiting
• 12ms Timed Fault Latch-Off, No thermal Dependency
• 2.5V to 5.5V Operating Range
• Under Voltage Lockout
• Disabled Output Internally Pulled Low
• Controlled Turn On/Off Ramp Times
• Fault Output Signal
• Logic Level Enable High Inputs (ISL6121H) or Enable Low Inputs (ISL6121L)
• Logic Level Compatible Enable Input and Fault Output

Applications
• Fibre Channel
• Industrial Power Control
• Hot Plug