LTC4286AUK#PBF

Hot Swap Controllers Overview

The LTC4286AUK#PBF is a high-power positive hot swap controller manufactured by Analog Devices Inc. It operates within an input voltage range of 8.5 V to 80 V and utilizes a 39-pin, 7 mm x 7 mm QFN package. The device integrates a 12-bit ADC with ±1% accuracy for monitoring output current (IOUT), input voltage (VIN), and output voltage (VOUT). It features adjustable current limiting with 5% accuracy, supporting sense voltages from 6 mV to 20 mV, and includes foldback current limiting. Key performance metrics include peak detection registers for current, voltage, and power, as well as remote temperature sensing with configurable warning and shutdown thresholds.

Hot Swap Controllers Feature Summary

• Integrates a 12-bit analog-to-digital converter for precise monitoring of current, voltage, and power parameters.
• Provides adjustable current limiting with 5% accuracy and foldback protection to prevent MOSFET overheating.
• Supports PMBus communication via SMBus 3.1 interface for system management and fault status reporting.
• Includes hardware protections such as undervoltage lockout, overvoltage protection, and board insertion detection.

Hot Swap Controllers Applications

• High-availability server backplane systems
• 12 V, 24 V, 48 V, and 54 V distribution systems
• Industrial equipment requiring safe board insertion and removal

Hot Swap Controllers Procurement Notes

Verify the specific suffix AUK against official Analog Devices documentation to confirm pinout and electrical characteristics. Confirm RoHS compliance status through manufacturer datasheets or component markings. Ensure the QFN-39 package dimensions match your PCB footprint requirements. Validate that the operating voltage range aligns with your system's power supply specifications before integration.

Hot Swap Controllers Selection Notes

Select this component when high-voltage hot swap capability up to 80 V is required alongside detailed power monitoring. The integrated 12-bit ADC eliminates the need for external conversion circuitry for basic telemetry. Consider the PMBus interface if digital control and fault logging are necessary for system management. Evaluate the thermal performance of the QFN package relative to your expected load currents and ambient temperatures.

Hot Swap Controllers Part Context

This part belongs to the LTC4286 family of positive hot swap controllers designed for robust power distribution in demanding environments. It serves as an integrated solution for safely inserting and removing boards from live backplanes. The device protects downstream components by managing inrush current and providing comprehensive fault detection capabilities.

Hot Swap Controllers Replacement Considerations

Publicly confirmed substitute part numbers for the LTC4286AUK#PBF were not identified in the provided source material. Consult Analog Devices technical support or authorized distributors for verified cross-reference information.

Hot Swap Controllers FAQ

What is the function of the onboard ADC in the LTC4286?

The onboard 12-bit ADC provides accurate monitoring of output current, input voltage, and output voltage, with an accuracy of ±1%.

How does the LTC4286 protect against MOSFET overheating?

It uses a breaker timer and foldback current limiting to manage power dissipation, preventing the MOSFET from exceeding safe operating temperatures during faults.