LT4239ADE#PBF

Hot Swap Controllers Overview

The LT4239ADE#PBF is a dual-channel hot swap controller manufactured by Analog Devices Inc. It operates within a supply voltage range of 4 V to 20 V and draws an operating supply current of 600 µA. The device supports channels from -40°C to +125°C and features internal switches for both channels. Packaged in a 16-lead (4mm × 3mm) plastic DFN with exposed pad, it provides power-over-data capabilities for safe board insertion and removal.

Hot Swap Controllers Feature Summary

• Supports reliable insertion and removal of boards from live backplanes
• Integrates auto retry and fault timeout mechanisms
• Includes I2C interface and latched fault protection

Hot Swap Controllers Applications

• Networking equipment
• Live backplane systems requiring safe board insertion
• Power-over-data applications

Hot Swap Controllers Procurement Notes

Verify the exact package marking and date code against the manufacturer's latest datasheet. Confirm that the 'E' suffix denotes the extended temperature range (-40°C to +125°C). Ensure the part number matches the specific lead-free and RoHS compliance status required for your assembly process. Cross-reference the ordering information section for any available packaging options or tape-and-reel specifications.

Hot Swap Controllers Selection Notes

Select this component when dual-channel hot swap protection is required for networking or backplane applications. Consider the 600 µA supply current for low-power standby requirements. Verify that the 4 V to 20 V input range aligns with the system bus voltage. The 16-lead DFN package requires appropriate thermal management considerations due to the exposed pad design for heat dissipation.

Hot Swap Controllers Part Context

This part belongs to the LT4239 family of hot swap controllers designed for managing power delivery during board insertion. It integrates control logic and MOSFET drivers to protect against overcurrent and short circuits. The device is optimized for applications where system availability is critical, allowing maintenance without powering down the entire network infrastructure.

Hot Swap Controllers Replacement Considerations

Consult Analog Devices documentation for direct pin-to-pin replacements. Verify compatibility with existing PCB footprints and control logic levels before substitution.