LTC4231IUD-1#PBF

Hot Swap Controllers Overview

The LTC4231IUD-1#PBF is a single-channel hot swap controller manufactured by Analog Devices Inc., designed for safe insertion and removal of live circuit boards. It operates within an input voltage range of 2.7 V to 36 V and features adjustable current limiting. The device draws a typical quiescent supply current of 4 uA, ensuring minimal power consumption during standby. It supports operation across an industrial temperature range from -40°C to +85°C and is housed in a compact 12-lead QFN (3x3 mm) surface-mount package.

Hot Swap Controllers Feature Summary

• Provides precise control over inrush current and output voltage slew rates during board insertion to prevent bus collapse.
• Features adjustable current limiting with automatic retry or latch-off protection modes for fault management.
• Includes integrated high-side switch with low on-resistance for efficient power distribution.
• Offers status monitoring outputs for fault indication and operational state verification.

Hot Swap Controllers Applications

• PCI Express card edge connectors
• CompactPCI backplane systems
• Industrial I/O module insertion
• Telecommunications equipment hot swapping

Hot Swap Controllers Procurement Notes

Verify the specific suffix #PBF confirms lead-free compliance and RoHS adherence before procurement. Confirm the IUD package variant matches the required PCB footprint. Check current availability status as distribution may vary by region. Ensure the operating voltage requirements align with the system's power rail specifications.

Hot Swap Controllers Selection Notes

Select this component when a single-channel solution with low quiescent current is required for 36V max applications. Compare against the LTC4231IUD-2#PBF if dual-channel capability is needed instead. Consider the MSOP package options if leaded space constraints differ from the QFN form factor. Evaluate thermal performance based on the expected load current and ambient conditions.

Hot Swap Controllers Part Context

This part belongs to the LTC4231 family of hot swap controllers, which are optimized for protecting power buses during live insertion. The series offers various channel counts and package options to suit different density requirements. It serves as a critical interface between the power source and the inserted circuit board, managing electrical stress during connection events.

Hot Swap Controllers Replacement Considerations

Direct functional substitutes include the LTC4231IUD-2#PBF for dual-channel needs or the LTC4231IMS variants for MSOP packaging compatibility. Verify pinout compatibility and electrical parameters before substituting to ensure system integrity.

Hot Swap Controllers FAQ

What is the maximum input voltage supported by the LTC4231IUD-1#PBF?

The device supports a maximum input voltage of 36 V.

Does the LTC4231IUD-1#PBF include an internal MOSFET?

Yes, it integrates a high-side N-channel MOSFET switch.

What is the quiescent current consumption of this controller?

The typical operating supply current is 4 uA.