Overview of LTC4261IGN#PBF

The LTC4261IGN#PBF is a sophisticated negative voltage hot swap controller from Linear Technology designed to provide safe board insertion and removal for systems operating on negative supply voltages. This device is housed in a compact 16-lead SSOP package and is specifically engineered to manage electronic circuit boards that are inserted into live backplanes.

Key Features

• Hot Swap Controller: The LTC4261IGN#PBF allows a board to be removed and inserted into a live backplane without causing glitches or disruptions in the negative supply voltage rail.
• Negative Voltage Operation: It operates with negative supply voltages ranging from -9V to -80V, making it versatile for various applications.
• Adjustable Current Limit: Users can set the overcurrent limit threshold via an external resistor, which provides flexibility and protection tailored to specific circuit requirements.
• Electronic Circuit Breaker: The device features an electronic circuit breaker function that protects the system from sustained overcurrent conditions.
• Multi-Function Timer: An onboard multi-function timer provides control over fault detection, power-up sequencing, and ensures safe operation.
• Gate Drive for External N-Channel MOSFET: The LTC4261IGN#PBF drives an external N-Channel MOSFET, which acts as the main power control element for the hot swap function.

Applications

The LTC4261IGN#PBF is ideal for a wide range of applications, including telecom and networking infrastructure, server backplanes, and industrial systems where negative voltage rails are common. Its robust feature set ensures reliable operation and protection for critical components during hot swapping operations.

Reliability and Protection

With its integrated under-voltage and over-voltage lockout, the LTC4261IGN#PBF ensures that the power supply remains within safe operating levels. Additionally, the device's status output can be used to signal a microcontroller or other monitoring circuitry in the event of a fault condition, enhancing system reliability and safety.

Linear Technology's LTC4261IGN#PBF is a comprehensive solution for managing hot swap events in negative voltage environments, providing designers with a reliable and flexible component to enhance system maintainability and uptime.