LTC4261IUFD - Negative Voltage Hot Swap Controller with ADC and I2C Interface

The LTC4261IUFD from Linear Technology is a sophisticated negative voltage hot swap controller designed to enable safe board insertion and removal from a live backplane. This integrated circuit (IC) is particularly suitable for systems that operate with negative supply voltages and require precise control and monitoring during hot swap events. The LTC4261IUFD is packed with an array of features that ensure protection and ease of use in high-availability systems.

Key Features:

• Adjustable Overcurrent Protection: The LTC4261IUFD provides an adjustable current limit threshold, enabling users to set the maximum allowable current to prevent damage to the circuit during abnormal conditions.
• Integrated ADC: With an onboard 10-bit analog-to-digital converter (ADC), the device allows for the monitoring of voltage, current, and temperature, providing critical feedback for system diagnostics and protection.
• I2C Compatible Interface: The I2C interface enables communication with microcontrollers or processors for reporting status and receiving commands, thus facilitating intelligent system control and management.
• Programmable Timer: A programmable timer ensures that faults such as overcurrent conditions are given time to clear before taking protective measures, reducing nuisance trips.
• Multi-Function Pin: The ON pin serves multiple functions, including enabling the IC, controlling the external MOSFET, and setting the overcurrent timer duration for added flexibility in design.

Applications:

The LTC4261IUFD is ideal for a range of applications that require negative voltage operation and robust protection mechanisms. These include:

• Telecommunication Systems
• Network Equipment
• Server Farms
• Industrial Control Systems

Encased in a 20-lead QFN package, the LTC4261IUFD offers a compact solution for hot swap control with its advanced feature set. Its negative voltage capability, precise monitoring, and communication features make it an essential component for ensuring system reliability and performance in critical applications.

Overall, the LTC4261IUFD is a highly reliable and versatile hot swap controller that meets the demands of modern electronic systems requiring negative voltage power management.