LTC4253 Overview
Description
The LTC®4253/LTC4253A negative voltage Hot Swap™ controllers allow a board to be safely inserted and removed from a live backplane. Output current is controlled by three stages of current-limiting: a timed circuit breaker, active current limiting and a fast feedforward path that limits peak current under worst-case catastrophic fault conditions.
Key Features
- Floating Topology Permits Very High Voltage Operation
- Adjustable Analog Current Limit with Breaker Timer Ideal for Two Battery Feeds
- Fast Response Time Limits Peak Fault Current
- Adjustable Undervoltage/Overvoltage Protection with ±1% Threshold Accuracy (LTC4253A)
- Three Sequenced Power Good Outputs
- Adjustable Soft-Start Current Limit
- Adjustable Timer with Drain Voltage Accelerated Response
- Latchoff After Fault
- Available in a 16-Pin SSOP Package
