The LTC1642CGN#PBF is a high-performance, Hot Swap™ controller integrated circuit (IC) from Linear Technology, designed to allow a board to be safely inserted and removed from a live backplane. This IC provides a controlled ramp-up of the output voltage to limit inrush current during plug-in, which helps prevent glitches on the power bus, system resets, and damage to connectors and circuit components.

Key Features

• Soft Start Capability: The LTC1642CGN#PBF features an adjustable soft-start function which controls the voltage ramp rate to the load, reducing inrush current and minimizing stress on the power supply and components.
• Electronic Circuit Breaker: This device includes an electronic circuit breaker function that provides overcurrent protection by monitoring the voltage across a sense resistor and turning off the external N-channel MOSFET when an overcurrent condition is detected.
• Automatic Retry or Latch Off: After a fault condition, the LTC1642CGN#PBF can be configured to either automatically retry powering up the circuit or latch off until the system is reset, offering flexibility in handling fault conditions.
• Undervoltage and Overvoltage Protection: The IC monitors the input supply for undervoltage and overvoltage conditions, ensuring that the power supply operates within a safe voltage range.
• Compact Package: Packaged in a narrow 16-pin SSOP, the LTC1642CGN#PBF saves board space and is suitable for dense circuit designs.

Applications

The LTC1642CGN#PBF is ideal for a range of applications where controlled power-up and protection are crucial. It is commonly used in hot-swap applications, server and telecom systems, power distribution systems, and central office switching equipment.

Technical Specifications

With a wide operating range and robust feature set, the LTC1642CGN#PBF is designed to meet the stringent requirements of professional electronic systems. It operates from a supply voltage range of 2.7V to 16.5V, which accommodates a variety of supply rails. The IC also features a gate voltage clamp to protect the external MOSFET from over-voltage and a status output pin to provide feedback on the operation of the IC.

Linear Technology's LTC1642CGN#PBF provides a sophisticated solution for power management and protection in high-availability systems. Its combination of features and compact form factor make it a valuable component for ensuring system reliability and integrity.