Linear Technology's LT4256-2IS8: High Voltage Hot Swap Controller

The LT4256-2IS8 is a robust high voltage Hot Swap™ controller designed by Linear Technology to allow a board to be safely inserted and removed from a live backplane. This component is housed in a compact 8-lead SO package, making it an ideal choice for space-constrained applications that require reliable power management solutions.

Key Features

• Versatile Operating Voltage: The LT4256-2IS8 is engineered to operate over a wide range of supply voltages, from 10.8V to 80V, accommodating various system requirements and ensuring compatibility with high voltage applications.
• Adjustable Current Limit: This controller offers an adjustable overcurrent threshold, which can be set via an external resistor. This feature provides flexibility in designing protection schemes tailored to specific circuit requirements.
• Fast Response to Overcurrent Conditions: The LT4256-2IS8 is designed to react swiftly to overcurrent conditions, providing rapid protection to downstream components and preventing damage due to excessive power draw.
• Gate Voltage Clamped at 15V: To safeguard the external N-channel MOSFET used in the power path, the gate voltage is clamped at 15V, ensuring that the MOSFET operates within its safe limits.
• Auto-Retry or Latch-Off: The controller can be configured for auto-retry after a fault condition or latch-off, offering designers the choice of automatic system recovery or requiring manual intervention for enhanced safety.

Applications

The LT4256-2IS8 is suitable for a variety of applications where safe power distribution and management are critical. It is commonly used in:

• Hot swap systems
• Network servers and storage systems
• Telecommunications equipment
• Industrial systems
• Redundant power supplies
• High availability systems

Overall, the LT4256-2IS8 from Linear Technology is a highly reliable and versatile solution for managing power in systems that require hot-swapping capabilities. Its robust design and comprehensive feature set make it an essential component for ensuring the safety and integrity of high voltage systems.